Ashcroft 1327CM, 1305D Operating Manual

Installation and

Installation and

Maintenance

Maintenance

Manual for the

Manual for the

®

ASHCROFT

ASHCROFT

1305D Deadweight

1305D Deadweight

Tester and Type

Tester and Type

1327D Portable

1327D Portable

Pump

Pump

®

Type

Type

I&M002-10095 4/02 (250-1526) Rev. 7/05

®

shcroft

A

or the Ashcroft

f

nd Type 1327D Portable Pump

a

nstallation and Maintenance Manual

I

®

ype 1305D Deadweight Tester

T

INDEX
Section Description

.

1

.

2

cope of Manual Safety Precautions

S

roduct Description 1305

P

heory of Operation

T
Construction
Specifications

roduct Description 1327

P

heory of Operation

T

onstruction

C
Specifications

3. Inspection
Installation 1305
Operation 1305
Installation 1327
Operation 1327

4. Factors Affecting Operation of Deadweight
Testers

5. Maintenance Instructions

6. Warranty

Shipping Instructions
List of Illustrations

Figure 1-1
Figure 1-2
Figure 2-1
Figure 2-2
Figure 5-1

.0 PURPOSE AND SCOPE OF MANUAL

1

his manual is provided to guide users of Model 1305D

T

nd 1327D pressure testing devices in:

a
(1) installing the equipment
(2) Routine operations

he instructions in this manual are designed to be per-

T

ormed by qualified instrument maintenance personnel.

f
Ashcroft Inc. does not recommend troubleshoot ing or

repairs beyond the scope of this manual. Problems that
cannot be remedied by following the instructions in this

anual should be referred to the manuf acturer. Immediate

m

ssistance can often be supplied by telephone. Defectiv e

a

omponents will be repaired or replaced by the manufac-

c
turer at his discretion and will be returned to the user by
the same mode of shipment. Airmail or air express is rec­ommended for urgent shipments. Returned goods should
be accompanied by information requested in Section 6.

Contact Customer Service at:

Ashcroft Inc.
250 East Main Street
Stratford, CT 06614
Phone: [phone]
Fax: [phone]

www.ashcroft.com
email: [e-mail]

1.1 Safety Precautions

Pressure Testing Equipment must be selected and used in
accordance with recognized industry codes and safety
practices to avoid the possibility of misuse or misapplica­tion which could result in personal injury or property dam­age. Personnel responsib le for selection and installation
should also be familiar with the safety recommendations of
ASME B40.1 that apply to elastic pressure elements and
their application in general and specific services. ASME
B40.1 is availab le from:

ANSI or ASME
1430 Broadway 345 47th Street
New York, NY 10018 New York, NY 10017

1. Pressure – Select a range so that the maximum
applied pressure will never exceed the upper range limit.

2. Vibration – Excessive vibration could cause a loosen­ing of components and abnormal wear resulting in loss of

ument accuracy or failure to provide v alid data.

instr

3. Temperature – Operation of the instrument in an envi­ronment where temperatures are in excess of design rat­ings may result in loss of accuracy and failure .

ust be resis-

4. Process – Pressure boundary mater

ials m
tant to the process media. Failure to assure compatibility
may result in pressure boundary deterioration or failure.
Instruments operated at high pressure or with potentially
hazardous service, such as oxygen, should be carefully
selected in accordance with recognized industry codes
and the recommendations of ASME B40.1.

2.0 PRODUCT DESCRIPTION –
THEORY OF OPERATION – CONSTRUCTION

2.1.2 Product Description

2.1.3 Construction

The Ashcroft Type 1305D Dual Range Deadweight testers

imary pressure standards, used for

are precision b

uilt pr
testing, setting, calibrating or repairing pressure measur­ing devices within the test points 15 psi (100kPa) to
10,000 psi (70,000kP

a).

he deadweight tester consists of a two stage hydraulic

T

ump containing a manifold which is pressurized during

p

peration. Integral to the pump is a shuttle valv e that

o
allows the operator to regulate the speed of pressure
increase. One connection to the manifold includes a cylin­der and a free-floating precision machined piston with a
plate for holding calibrated weights. A second connection
to the manifold accommodates a gauge or other pressure
measuring device to be calibrated or checked.

ncorporated into the manifold is a hand operated dis-

I

lacement valve that allows small adjustments in fluid v ol-

p

me to be made without further operation of the pump

u
handle or release valve.

The tester is dual range having two interchangeable piston

nd cylinder assemblies. One is a low pressure piston

a

aving an effective area five times larger than that of the

h
high pressure piston. The low pressure piston is used for
making measurements below 2,000 psi (14,000 kPa). The
high pressure piston, with an area 1/5 that of the low pres­sure piston, is used to measure pressure through 10,000
psi (70,000 kPa). The weight masses are pre-measured
and identified with the pressure values they produce when
operated with the interchangeable piston and cylinder
assemblies.

Pressure calibration points produced by the deadweight
tester are accurate to within ± 0.1% of the reading certified
traceable to the N.I.S.T. The tester provides consistent,
repeatable accuracy, maintaining its pressure for an appre­ciable length of time regardless of temperature changes,
slight leaks in the pressure system, or changes in volume
of the pressurized system due to movement of a Bourdon
tube or other device.

A hand jack set, three wrenches, spare O-rings, and a
special adapter for making connections to pressure outlets
that do not accommodate cone pipe seating, are included
with each unit.

All deadweight testers are supplied with lower and back
connection offset pipe assemblies, with pipe adapters for

1

⁄

4 NPT or

1

⁄

2 NPT connections.

An all metal, double-latched, top handle carrying case is
supplied with the complete tester for all fittings and attach­ments. Deadweights are packed in metal, double-latched
storage-carrying boxes.

2.1.2 Theory of Operation – 1305D

The theory behind a deadweight tester can be expressed
as simply as force acting upon a known area. Pressure

y the manifold, to the

produced b

y the pump is distrib

base of a precision machined piston and to a de

uted b

vice being
calibrated or checked. Pre-selected weights loaded onto
the piston platfor

m are acted upon b

y g

a

r

vity and de

velop
a force that is to be equally opposed by the fluid pressure
from the pump. When equilibrium is achieved, the pres­sure value is known, it being a direct result of the sum of
the forces from the weights, piston platf orm and the piston
divided by the effective area of the piston and cylinder
assemb

ly.

With the 1305D two piston and cylinder assemblies are
supplied, one having an effective area 1/5 of the other.
When using the smaller piston and cylinder assembly, five
times more pressure is required to oppose the force of a

ravity. For this rea-

constant mass being acted upon b

y g
son the masses supplied with the tester are stamped with
two pressure values, the value being contingent on the

e area of the piston and cylinder assemb

ectiv

eff

ly selected

.

.1.3 Specifications – 1305D

2

ccuracy:

A

ylinder assemblies within 0.1% of reading. Weight toler-

c

ombined tolerance of weights and piston and

C

ance within 0.05% of mass. Piston and cylinder is within

0.05% of rated mean effective area.
Deadweight: Non-magnetic die cast zinc alloy. Total
weight to produce maximum pressure of 10,000 psi
(70,000kPa) is 125 lbs. (56.7 kg).
Piston & Cylinder Assemblies: High strength stainless

teel piston and cylinder with brass collar and aluminum

s

eight platform.

w

ump:Two stage, lev er operated gener ates 10,000 psi

P

(70,000 kPa) with 28 pounds (12.7 kg) of force on lever
handle.
Pump Body: Aluminum, corrosion inhibited and coated
with baked blue epoxy finish.
Shuttle Valve: Stainless steel bypass valv e that controls
rate of pressure increase and reduces operator effort
when working at high pressure.
Displacement Valve: A fine pitched threaded valve rod
permitting vernier adjustments to fluid volume and provide
precise pressure changes or adjustment of piston travel.
Limit stops prevent rod removal during normal operation.
Mounting: Four bench mounting holes located in base for
positive mounting to any level surface.
Instrument Connections: Tw o coned pipe assemb lies
provide vertical calibration capability for back and low er
connected gauges. Standard

1

⁄4 inch internal NPT and 1⁄2
inch inter NPT fitting adapters are supplied.
Operating Fluid: 1305D – Light grade machine oils, auto­motive petroleum base SAE 20 oils or other equivalent flu­ids suitable for use with Buna N O-ring materials. 1.5 pints
required (.7 liters).

1305DH – Most hydraulic oils of phosphate ester base,
brake fluids, skydrol, pydraul etc., suitable for use with
Butyl or Ethylene-Propylene O-ring materials. 1.5 pints
required (.7 liters).

2.1.4 Certification:
Standard (CD-3)

– Certificate of NIST traceability
(accuracy/traceability statement only).
Optional (CD-5) – Certification document includes actual
(as left) weight values for each weight and piston, piston
diameter values, environmental data and NIST test
numbers. Set includes numbered weights.

2.2 Product Description 1327D

2.2.1 Construction

The Ashcroft T

ype 1327D Portable Test Pumps are
rugged, versatile pressure transfer standards, used for
testing, setting, calibrating or repair

ing pressure measur

­ing devices with ranges up to 10,000 psi (70,000kP a). A
selection of high accuracy test gauges, with a precision of
±0.25% of span, are supplied as the standard to which the
device under test is compared.

aulic

The main component to the tester is a tw

o stage h

ydr
pump containing a manifold which is pressurized during
operation. Integral to the pump is a shuttle valv e that
allows the operator to regulate the speed of pressure
increase. One connection to the manifold has a straight
pipe with a precision test gauge attached serving as the

erence standard. A second connection to the manif

ref

old
accommodates a gauge or other pressure measuring
device to be calibrated or check ed. Incorporated into the

e that

old is a hand oper

manif

ated displacement v

alv
allows small adjustments in fluid volume to be made with­out further operation of the pump handle or release valve.

Model Piston Assembly Piston Net

Number Pressure Range Piston Area Value Number of Weights by Value Weight

L-5 L-10 L-20 L-40 L-100

psi Type Low High Low High Low

High

H-25 H-50 H-100 H-200 H-500

lbs. kg.

1305D-10
1305DH-10 15/200 75/1000 5 25 1 3 2 3 -- 60 27
1305D-20
1305DH-20 15/400 75/2000 5 25 1 3 2 3 2 70 32
1305D-30 .

0625 in.2.0125 in.

2

1305DH-30 15/600 75/3000 (.4032) (.0806) 5 25 1 3 2 3 4 85 39

305D-50

1
1305DH-50 15/1000 75/5000 5 25 1 3 2 3 8 105 48
1305D-100
1305DH-100 15/2000 75/10000 5 25 1 3 2 3 18 175 80

Model Piston Assembly Piston Net

Number Pressure Range Piston Area Value Number of Weights by Value Weight

M

kg/cm2Type Low High Low High Low High

METRIC RANGES ARE NO LONGER AVAILABLE – INFORMATION FOR REFERENCE ONLY

L-.5 L-1 L-2 L-4 L-5

H-2.5 H-5 H-10 H-20 H-25

lbs. kg.

1305DM-20
1305DMH-20 1/20 -- .5 2.5 1 1 2 1 2 63 29
1305DM-100
1305DMH-100 1/20 5/100 .5 2.5 1 1 2 1 2 65 30
1305DM-150 .

0625 in.2.0125 in.

2

1305DMh-150 1/30 5/150 (.4032) (.0806) .5 2.5 1 1 2 1 4 75 34
1305DM-350
1305DMH-350 1/70 5/350 .5 2.5 1 1 2 1 12 105 48
1305DM-700
1305DMH-700 1/140 5/700 .5 2.5 2 1 2 1 26 175 80

Model Piston Assembly Piston Net

Number Pressure Range Piston Area Value Number of Weights by Value Weight

bar Type Low High Low High Low High

L-.5 L-1 L-2 L-4 L-5

H-2.5 H-5 H-10 H-20 H-25

lbs. kg.

1305DB-20
1305DBH-20 1/20 -- .5 2.5 1 1 2 1 2 63 29
1305DB-100
1305DBH-100 1/20 5/100 .5 2.5 1 1 2 1 2 65 30
1305DB-150 .

0613 in.2.0123 in.

2

1305DBH-150 1/30 5/150 (.3954) (.0791) .5 2.5 1 1 2 1 4 75 34
1305DB-350
1305DBH-350 1/70 5/350 .5 2.5 1 1 2 1 12 105 48
1305DB-700
1305DBH-700 1/140 5/700 .5 2.5 2 1 2 1 26 175 80

Model Piston Assembly Piston Net

Number Pressure Range Piston Area Value Number of Weights by Value Weight

Pascal T

ype

Low

High

Low

High

Low High

L-50 L-100 L-200 L-400 L-500

H-250 H-500 H-1000 H-2000 H-2500

lbs.

1305DA-2000
1305DAH-2000

100/2000

--

50 250

1

2126329

1
1305DA-10000
1305DAH-10000
1305DA-15000
1305-DAH-15000

100/2000 500/10000 50 250 1 1 2 1 2 65 30

.

0613 in.2.0123 in.

2

100/3000 500/15000 (.3954) (.0791) 50 250 1 1 2 1 4 75 34
1305DA-35000
1305DAH-35000

100/700 500/35000

50 250 1 1 2 1 12 105 48
1305DA-70000
1305DAH-70000

Dimensions in ( ) are square centimeters

100/14000 500/70000 50 250 2 1 2 1 26 175 80

kg

.

TABLE 2-1

ressure values produced by the pump are able to be

P

learly read to within ±0.25% accuracy of the span of the

c

recision test gauge selected for testing. Certification of

p
test gauge accuracy traceable to the N.I.S.T., is a v ailab le
upon request. A hand jack set, three wrenches, spare O­rings, and special adapter for making connections to pres­sure outlets that do not accommodate cone pipe seating,
are included with each unit.

Test pump accessories include lower and back connection
offset pipe assemblies, with pipe adapters for

1

⁄

4 and

1

⁄

2

NPT connections.

n all metal, double-latched, top handle carrying case is

A

upplied with the complete tester to hold all fittings and

s
attachments.

2.2.2 Theory of Operation – 1327D

The operating principle behind the 1327D Test Pump is a
simple form of comparison. Pressure produced by the
pump is equally distributed by the manifold to a test gauge
and to a device being calibrated or check ed. The reading
of the test gauge serves as the reference to which other
device readings are compared against.

Selection of the test gauge range is the determining factor
in establishing the precision to which a comparison check
is to be made. Test gauge accuracy is expressed as a per­centage of its span.

Proper selection of the test gauge range must be made to
minimize the amount of the unit error. If a 5,000 psi
(35,000kPa) range test gauge were used to test de vices
whose span values were less than a fourth of the test
gauge range, the unit error of 12.5 psi (87kPa) would be
greater than 1% of the test pressure. Therefore, it is impor­tant to select a test gauge that has a full scale range equal
to or only slightly in excess of the pressure value to be
measured.

2.2.3 Specifications – 1327D
Accuracy:

Test Gauges: Ashcroft solid front type 45-1082-02L-XAZ,

1

4

⁄

2˝ dial size (120mm case). Bourdon tube materials for

1

⁄

4% of 1% of test gauge span.

1327D and DH are bronze and Monel. Bourdon tube
materials for 1327DO are bronze and Monel.

Pump: T

wo stage, lev er operated gener ates 10,000 psi
(70,000kPa) with 28 pounds (12.7kg) of force on lever
handle.

Pump Body:Alumin

with bak

ed blue epoxy finish.

um, corrosion inhibited and coated

Shuttle Valve: Stainless steel bypass valv e that controls
rate of pressure increase and reduces operator effort
when working at high pressure.

Displacement Valve: A fine pitched threaded valve road
permitting vernier adjustments to fluid volume to provide
precise changes. Limit stops prevent road remo v al during
normal operation.

Mounting: F

our bench mounting holes located in base f

or

positive mounting to any level surface.

o coned pipe assemblies

Instrument Connections: T
provide vertical calibration capability for back and low er
connected gauges. Standard
inch inter

nal NPT fitting adapters are supplied.

w

1

⁄

4 inch internal NPT and

1

⁄

2

Operating Fluid: 1327D – Light grade machine oils, auto-

e petroleum base SAE 20 oils or other equiv

motiv

alent flu­ids suitable for use with Buna N O-ring materials. 1.5 pints
required (.7 liters).

327DH –Most hydraulic oils of phosphate ester base,

1

rake fluids, skydrol, pydr aul etc., suitab le for use with

b

utyl or Ethylene-Propylene O-ring materials. 1.5 pints

B
required (.7 liters).

1327DO – Distilled water with compatible corrosion

nhibitor. A .1% solution of sodium dichromate is a suitable

i

nhibitor. 1.5 pints required (.7 liters).

i

2.2.4 Certification:
Standard –

Master gauges are calibrated on NIST trace-

able standards, no certification documentation provided.
Optional (CD-4) – Individual certified calibration chart

(NIST traceable) for each master gauge.

.0 SETTING UP THE TESTER

3

3.1 Inspection

3.1.1 Component Check 1305D

The deadweight tester, as shipped from the f actory, con­tains all of the components necessary for operation except
pump fluid. Depending upon the model and pressure
range selected, the total number of weights, weight bo xes
and piston and cylinder assemblies will vary. Refer to
Specifications, Section 2.1, Table 2-1 for model clarifica­tion.

3.1.2 Component Check 1327D

The portable test pump, as shipped from the factory, con­tains all of the components necessary for operation except
pump fluid. Depending upon the model and pressure
range selected, the total number and their ranges will vary.
Refer to Specifications , Section 2.2, Table 2-3 f or model
clarification.

3.1.3 Claim for Missing or Damaged Goods

In the event it is determined that an item is missing or
damaged, contact Customer Service immediately at the
address indicated in Section 1.0. Damaged merchandise
and the packaging materials must be held for inspection
by authorized Ashcroft Inc. personnel or the responsible
carrier. Disposition of damaged or missing goods will be
determined after inspection has been performed on loca­tion, or at the discretion of the manufacturer ,at the factory.
Inspection may be waived if circumstances, as judged by
the manufacturer , preclude its necessity.

3.2 Installation Type 1305D

3.2.1 Set-up Pr

ocedure (See Figure 2-1)

To remove the tester from the case, release the spring clip,
depressing the clip by hand, grasp the pump reservoir and
lift up the back end of the pump assembly.

ving removed the pump assembly from its carrying

Ha
case, remove the two plastic shipping plugs .

Select a lower connection (64) or back connection (66) off­set pipe and connect to inner pump body outlet as shown
in Fig. 2-1.

Remove the reservoir filler plug (35) and fill reservoir with
operating fluid.

3.2.2 Bench Space Required (See Figure 1-1)

w a space:

Allo
10 inches (25.4 cm) width
27 inches (68.6 cm) depth
22 inches (55.9 cm) height – allows for maximum load of
deadweights

e Space Required

3.2.3 Stora
One Tester Bo x:

101⁄

g

2 inch (2.6 cm); 22

1

⁄

2 inch (57 cm) depth; 10 inch (25

cm) height

nit Of Model Tools & Net Weight

U

easure Number Case Access. Gauge Range(s) Included lbs. kg

M

1327*
1327H* – – – – – – 12 5
1327O

1327D

327DH X X – – – – 34 15

1

327DO

1
1327DG-2

1327DGH-2 X X 0/150 – – – 36 16
1327DGO-2

327DG-6

1

327DGH-6 X X 0/150 0/600 – – 38 17

1

327DGO-6

psig

1
1327DG-50

1327DGH-50 X X 0/150 0/600 0/5000 – 40 18
1327DGO-50

1327DG-100
1327DGH-100 X X 0/150 0/600 0/5000 0/10000 42 19
1327DGO-100

1327DMG-10
1327DMGH-10 X X 0/10 – – – 36 16
1327DMGO-10

1327DMG-40
1327DMGH-40 X X 0/10 0/40 – – 38 17

kg/cm2

1327DMGO-40
1327DMG-250

1327DMGH-250

X X 0/10 0/40 0/250 – 40 18

1327DMGO-250
1327DMG-600

1327DMGH-600 X X 0/10 0/40 0/250 0/600 42 19
1327DMGO-600

1327DBG-10
1327DBGH-10 X X 0/10 – – – 36 16
1327DBGO-10

1327DBG-40
1327DBGH-40 X X 0/10 0/40 – – 38 17

bar

1327DBGO-40
1327DBG-250

1327DBGH-250 X X 0/10 0/40 0/250 – 40 18
1327DBGO-250

1327DBG-600
1327DBGH-600 X

X

0/10 0/40 0/250 0/600 42 19

1327DBGO-600
1327DAG-1000

1327DAGH-1000 X X 0/1000 – – – 36 16

GO-1000

A

1327D
1327DA

1327D

G-4000
GH-4000

A

X X 0/1000 0/4000 – – 38 17

Pascal 1327DAGO-4000

(kPa) 1327DAG-25000

AGH-25000 X X 0/1000 0/4000 0/25000 – 40 18

1327D
1327DAGO-25000

G-60000

A

1327D
1327DAGH-60000 X X 0/1000 0/4000 0/25000 0/60000 42 19
1327DAGO-60000

*Includes Test Pump Only

T ABLE 2-2

One Weight Box:

10 inch (25 cm) width; 10 inch (25 cm); 10 inch (25 cm)
height

Storage space dimensions are larger than actual size of

ester carrying case and deadweight carrying case by

t
approximately _ inch, (1.3 cm), in order to facilitate ease of
handling in storage.

Note: For catalog numbers 1305D, DH-100, 1305DM,

DMH-150, 1305DB, DBH-700 and 1305DA, DAH-

00 allow storage space for two weight boxes.

7

3.3 Operation 1305D

3.3.1 Piston and Cylinder Selection

The 1305D Tester is a dual range device in that most

-models utilize two interchangeable piston and cylinder
assemblies for measurement of pressure throughout the
entire range. Each piston and cylinder assembly has a
minimum and maximum operating range. First, determine
what pressure points need to be measured and select the
appropriate assembly. The pressure range of the assem­blies is shown in Table 2-1. When priming the pump the
high pressure piston and cylinder assembly should be used.

3.3.2 Priming the Pump

The offset pipe (64 or 66 Figure 2-1) should already be
secured in place and the reservoir should contain the
operating fluid (refer to Installation Section 3.2).

Close the release valve (37) by turning it clockwise and
open the air vent by loosening the filler plug (35) a few
turns. The shuttle valve (51) should be pulled outward
from the pump body, the end of the knob approximately
even with the edge of drip pan. In this position the high
volume displacement mode is selected and the pump is
self-priming. Operate the pump handle several times using
full strokes, until you see fluid appear in the outer pump
body outlet.

The cone seat (82) is located in the base of the outer­pump body outlet and serves as the sealing surface
between the bottom of the piston and cylinder assembly
and the pump body. Confirm the coned end of the seat is
facing up and the cylindrical end of it is facing down.
Thread the high pressure piston and cylinder assembly
(79) or (67) into the outer body outlet as shown, using the
wrenches provided.

Operate the pump handle a few more times until fluid is

ed at the end of the offset pipe. Connect the gauge

v

obser
or other device to be tested to the offset pipe. For purpos­es of priming, the device must be designed to withstand
the full operating pressure of 10,000 psi (70,000kPa). If a
lower range device must be used, extreme care must be
exercised to a v oid o verpressuring its pressure element.
Seal the connection to the device by tightening nut adapter
(62) and adapter (60) until the coned end of the pipe is

, rotate the device for view-

orced into its inlet. If necessar

f

y loosening nut adapter (62), set it to the proper posi-

ing b

y

tion and retighten nut adapter.
Again, operate the pump handle a few more times. After a

few strokes positive pressure will develop and the pump
handle will begin to resist pumping action. Raise the pump
handle to its upper

most travel position. Loosen the bleed
screw (30) a half turn counter clockwise and slowly oper­ate the pump handle through a do

ent. Close the b

ws steadily from the b

flo

leed v

wnw

ard strok

e until fluid

leed scre

w
just prior to completing the downward handle motion.
Repeat this action until no air bubbles are observed in the
fluid flow. (Note – the bleed screw must be closed when

he handle is being raised). Push the shuttle valve in

t

owards the pump body and continue pumping to the

t

esired test pressure. Open the release valve (37) to v ent

d
the pressure. To check operation pull the shuttle valve out­ward, close the release valve and operate the pump han­dle several times . When handle resistance is f elt, push the
shuttle valve inward and continue pumping within the
range of the test device.

Entrapped air will prevent the pump from operating in the
high pressure valve position or cause it to achie v e only
partial pressure. Repeat the above bleed procedure as
necessary to assure all air is removed. Once air is
removed the pump will continue to operate without further
attention providing the reservoir level is maintained.

3.3.3 Weights

The weight set consists of a selection of various masses
that will produce desired pressure increments when oper­ated with the appropriate piston and cylinder assembly.
Each weight is stamped with two pressure values. When
applied to the high pressure piston and cylinder assembly
the equivalent pressure value is indicated ne xt to the letter
“H”. Conversely, when applied to the low pressure piston
and cylinder assembly the equivalent pressure value is
indicated next to the letter “L”. The piston and piston plat­form also contribute to the total mass. Their equivalent
pressure value is stamped on the top of the platform.

During normal operation, selected weights are added to
the plate and piston assembly to equal the desired pres­sure value.

3.3.4 Levelness

The deadweight tester must be level to function properly.
The unit may be leveled byplacing a bubble type level on
top of the piston plate and revolving it slowly. Shims ma y
be used between drip pan and bench to level the piston
plate. The unit is level when the position of the bubble
does not change within the glass as it is rotated on top of
the piston assembly.

3.3.5 Making the Test

Add weight to the piston plate to give desired calibrating
pressure.

Pull the shuttle valve (51) outward from the body and close
the pressure release valve (37). Operate the pump handle
until the fluid pressure forces the piston to raise the
weights. When pumping, the weights should be rotated
slowly to decrease cylinder wall friction. If pump handle
resistance is difficult and the weights have not risen, push
the shuttle v
shuttle v

alve pushed in, the fluid displacement of each

alve inw

ard and contin

ue pumping. With the

stroke is reduced, thereby requiring less effort to continue
pumping.

The piston assembly has a maximum lift of
cm). It is recommended that readings be tak
point, or

3

⁄

8 inch (1 cm) lift. Small adjustments to the piston

3

⁄

4 inch (1.9

en at mid-

lift can be made with the pump handle or the displacement

e (41).

alv

v
Improper readings will result if the piston plate is so low

that it rests on the b

ushing, or so high that the inter

nal
stop on the piston assembly is touching the underside of
the bushing.

Spin the weights by hand and take readings only when the
weights are spinning. Speed of rotation is unimportant,
although a slo

w speed is more con

venient and

recommended.
To release pressure, turn valve (37) counterclockwise slo wly.

igure 2-1Ashcroft Portable Deadweight Tester 1305D

F

.3.6 T o Dismantle

3

o replace the tester in its case, remove the gauge offset

T

ipe assembly (64 or 66) and the piston and cylinder

p
assembly (67 or 79). Install shipping plugs in body outlet
holes. Screw in the displacement valv e (41) until it stops .
Close the vent plug (35). Open the release valve (37)
approximately _ turn. Replace the tester in its case, reser­voir last. Engage the spring clip catch.

3.3.7 General Precautions

It is important that the deadweight tester be connected to
a leak tight system.

he deadweight tester should be set-up so that the axis of

T

he located piston is vertical, the weights carefully cen-

t
tered on that axis, and the piston rotated during use. The
purpose of the rotation is to spread the lubricant over the
entire surface between piston and cylinder , so that there
will be no metal-to-metal contact. If rotation is not main­tained, the lubricant film will not cover the surface properly,
and readings will be in error.

The high and low pressure piston assemblies hav e an
internal overload stop, which prev ents the piston and cylin­der from being forced apart if weights are accidentally
removed.

3.3.8 Operating Fluids
Standard T ester:

Any medium weight oil may be used (including automotive
oils S.A.E. 10, 20 or 30) S.A.E. 20-W recommended.

Hydraulic Tester:

Any hydraulic fluid (silicate or phosphate base). Skydrol or
Pydraul is suitable.

For normal operation, it is not necessary to change the
weight of oil for various pressures. A lighter oil may be
used where low pressures are being checked, and a heav­ier oil where higher pressures are being tested.

The reservoir can be refilled while the tester is operating
under pressure.

3.3.9 Caution

Standard testers designed for oil service may not be used
with water for oxygen service.

3.3.10

Hydraulic service testers should not be filled with water or
any oil other than hydraulic fluid. Serious pump failure may
occur due to O-ring damage.

3.4. Installation Type 1327

3.4.1 Set up Pr

o remove the test pump from the case, release the spring

T

ocedure (See Figures 2-2)

clip, depressing the clip by hand, grasp the pump reser-

, and lift up the bac

oir

v

k end of the pump assembly

.

Remove the two plastic shipping plugs from the outlet con­nections
v

. Remov

oir filling hole. Remove the offset pipe (64) or (66) from

e the threaded filler plug (35) from reser-

the carrying case and connect to the inner pump body out-

e the straight pipe

let as sho

wn in Figure 2-2. Remo

v
extension (58), and assemble to outer vertical pump body
outlet as shown in Figure 2-2.

3.4.2 Connecting The Gauge (See Figure 2-2)

Select a test gauge that is adequate for the pressure

ange desired. Assemb

r

le the test gauge to the str

aight
pipe extension, using adapter nut (62), collar (61), adapter
(60) and reducer bushing (59).

Seal the connection by tightening nut adapter (62) and
adapter (60) until the coned end of the pipe is forced into

he gauge socket. Rotate the gauge for vie wing b y loosen-

t

ng nut adapter (62), setting the gauge to the desired posi-

i

ion, and re-tightening nut adapter.

t
Repeat the above procedure to connect the gauge being

tested to the offset pipe assembly (64) or (66).

3.4.3 Bench Space Required

Allow a space:
10 inch (2.5 cm) width
23 inch (5.8 cm) depth
22 inch (5.6 cm) height allows for testing gauges up to 8.5

nch (250 mm) size

i

3.4.4 Storage Space Required

101⁄

2 inch (27 cm) width

1

⁄

2 in (57 cm) depth

22
10 inch (25 cm) height

Storage space dimensions are larger than actual size of
test pump carrying case by approximately 0.5 inch (1.3
cm), in order to facilitate ease of handling in storage.

3.5 Operation 1327D

3.5.1 Test Gauge Selection

The portable test pump is used for calibrating instruments
such as pressure gauges, pressure switches or other
pressure devices rated up to 10,000 psi (70,000kP a).

First, select the proper test gauge, depending upon the
pressure range desired. When priming the pump a test
gauge rated to 10,000 psi (70,000kPa) should be used.

3.5.2 Priming The Pump

The offset pipe (64 or 66 Figure 2-2) and straight pipe
extension (58) should already be secured in place and the
reservoir should contain the operating fluid (refer to instal­lation Section 3.4).

Close the release valve (37) by turning it clockwise and
open the air vent by loosening the filler plug (35) a few
turns. The shuttle valve (30) should be pulled outward
from the pump body, the end of the knob approximately
even with the edge of the drip pan. In this position the high
volume displacement mode is selected and the pump is
self-priming. Operate the pump handle several times using
full strokes, until you see fluid appear at the top of the
straight pipe extension. Connect the test gauge to it (refer
to Installation Section 3.4 for proper gauge connection).

ate the pump handle a few more times until fluid is

Oper
observed at the end of the offset pipe. Connect the gauge
or other device to be tested to the offset pipe. For purpos­es of priming, the device must be designed to withstand
the full operating pressure of 10,000 psi (70,000kPa). If a
lower range device must be used, extreme care must be
exercised to a v oid o verpressuring its pressure element.
Seal the connection to the de

vice by tightening n

ut adapter
(62) and adapter (60) until the coned end of the pipe is
forced into its inlet. If necessary, rotate the device for view-

y loosening n

ing b

ut adapter (62), set it to the proper posi

tion and retighten nut adapter.
Again, oper

ate the pump handle a fe

w more times. After a
few strokes positive pressure will develop and the pump
handle will begin to resist pumping action. Raise the pump
handle to its uppermost tra

el position. Loosen the b

v

leed
screw (51) a half turn counter clockwise and slowly oper­ate the pump handle through a downward stroke until fluid
flows steadily from the bleed vent. Close the b leed scre w
just prior to completing the downward handle motion.
Repeat this action until no air bubbles are observed in the

. (Note – the bleed screw must be closed when

w

fluid flo
the handle is being raised). Push the shuttle valve in

-

owards the pump body and continue pumping to the

t

esired test pressure. Open the release valve (37) to v ent

d

he pressure. To check operation pull the shuttle valve out-

t
ward, close the release valve and operate the pump han­dle several times . When handle resistance is f elt, push the
shuttle valve inward and continue pumping within the
range of the test device.

ntrapped air will prevent the pump from operating in the

E
high pressure valve position or cause it to achie v e only
partial pressure. Repeat the above bleeding procedure as
necessary to assure all air is removed. Once air is
removed the pump will continue to operate without further
attention providing the reservoir level is maintained.

3.5.3 Making The Test

Turn displacement piston handle (41) to mid-position, so
that it may be used for setting an e xact pressure on the
gauge. The displacement piston has internal stops which
prevent unscrewing or accidental loss of pressure .

Clockwise rotation of displacement piston will produce an
increase in pressure; counterclockwise will decrease
pressure.

Prior to taking readings, both gauges should be finger­tapped lightly at the center of the gauge face, to eliminate
any movement friction. Note the pressure readings on the
test gauge and the gauge under test. If the pressure indi­cated on the gauge under test is not equal (within the tol­erance of the gauge) to the pressures of the master test
gauge, the gauge being tested requires calibration.

CAUTION:

Do not pump handle to pressures greater than the pres­sure range of the gauges connected to the test pump, as
this may damage the gauges.

3.5.4 T o Release Pressure

Open release valve slowly (37), until pressure returns to
zero. Do not loosen any connections until pressure in the
gauge tester has reached zero, as indicated on the test
gauge.

If additional gauges are to be tested, close the release
valve when the pressure reaches zero. This will prevent
complete drainage of oil in the tester back to the reservoir.

Unseal the gauge that has been tested by unscrewing
adapter nut (62) from connector (60) several turns.
Unscrew the gauge from bushing (59) if used, or connec­tor (60), and remove.

ve the test gauge in the same manner as the gauge

Remo
under test.

3.5.5 T o Dismantle

To replace test pump in case, remove gauges and both
tube assemb
Close filler plug (35).

3.5.6 Operating Fluids
Standard T est Pump:

Any medium weight oil may be used (including automotiv e
oils S

Hydraulic Test Pump:

Any hydraulic fluid (silicate or phosphate base). Skydrol or
Pydraul is suitable.

Oxyg

Distilled or demineralized water with a compatible corro­sion inhibitor added. A .1% solution of sodium dichromate
is a suitable inhibitor.

For normal operation it is not necessary to change the

lies. Put shipping plugs into pump and tighten.

.A.E 10, 20 or 30) S.A.E. 20-W recommended.

est Pump:

en T

eight of oil for various pressures. A lighter oil ma y be

w

sed where low pressures are being checked, a heavier oil

u

here higher pressures are being tested.

w
The reservoir can be refilled while the test pump is operat-

ing under pressure.

3.5.7 Caution

Standard testers designed for oil service may not be used
with water for oxygen service.

.5.8

3

Hydraulic service testers should not be filled with water or
any oil other than hydraulic fluid. Serious pump failure may
occur due to O-ring damage.

.0 F ACTORS AFFECTING OPERATION OF

4

EADWEIGHT TESTERS

D

4.1 Deadweight Tester Accurac y

Excellent accuracy is possible using the deadweight tester
through analysis and control of certain factors. If the
tester’s rated accuracy of 1/10th of 1% is adequate , then
the nominal pressure (sum of the denominations of the
weights loading the piston) may be assumed to be correct.
The pressure normally developed is determined by this
formula: Deadweight Tester Pressure =

Mass of weights plus piston mass
Effective area of piston and cylinder

P = (M-ph) g

P =pressure
M = mass of the load on the piston
A =effectiv e area of the piston in sq. inches , or sq. cm
g/gs =ratio of the v alue (g) of g ravity at the point of use to

the standard value of gravity (gs)
P =density of liquid used in test
h = difference in level between gauge being tested, and

the bottom of the piston
The deadweight tester is capable of measuring pressures

to proper corrections after analyzing these factors.

4.2 Gravity , Calibrated Weights

eights furnished are calibrated at standard gravity of

W

980.665 gals. If precise accuracy is required, the error
introduced by change of weight due to change in gravity at
the locality should be calculated and included in results.

The mechanism of an Ashcroft Pressure Gauge includes
a Bourdon tube and geared movement, which is unaffect­ed by variations in gravity. Conversely, the pressure devel­oped by a deadweight tester is proportional to the value of
gravity. Readings of this type pressure gauge will corre­spond to those of a deadweight tester when the tester is
subjected to standard gravity (gs = 980.665 gals. in the
International System). In southern sections of the United

, the value of g

States
less than the standard v
vation above sea level (a) for an area are known, the

ximate v

appro
this formula:

Ø = Latitude (Degrees)
a = Elevation abo v e sea level (ft)

ective Measured Area: Chamber

Eff

4.3

The effective area of the deadweight tester may be deter­mined by the average of the cross sectional area of the
piston and the area of the cylinder bore. This effective area

A gs

ravity may be se veral thousandths

alue, if the latitude (Ø) and the ele-

alue of (g) in gals

g = 980.632-2.586 COS 2Ø

+.003 COS 4Ø - .000094a

. may be calculated from

s affected somewhat by temperature, and by the elastic

i

istortion of the piston and cylinder when pressure is

d

eing applied. The effective area of a stainless steel piston

b
and cylinder increases approximately .068% with a 50
degree F (28 degree C) change in temperature. The
pressure will, therefore be less than indicated at high
temperatures.

.4 Mass, Height, and Buoyancy

4

The density of air at room temperature and sea level pres­sure is about 0.0012 grams/c.c., and the mass of the pis­ton assembly and weights under these conditions will be
reduced by about one part in 7,000 or .014%. When the
submerged part of the piston has a uniform cross section,
as with the 1305D Deadweight Tester, a b uoyancy correc-

ion is not necessary. In other designs , the piston is some-

t

imes enlarged to provide a stop for its upward motion or

t
for increased strength. If these enlargements are sub­merged in liquid, a buoyancy correction is necessary.

4.5 Absence of Friction

By rotating the weights and piston, friction effects are
greatly reduced.

4.6 Head of T ransmitting Fluid

Oftentimes, the gauge being tested, or the point at which
pressure is being measured, is not at the same level as
the lower end of the piston. A correction, therefore, should
be made for the pressure distance between these points;
the height is considered positive when the gauge is above
the piston. When oil is used in the gauge tester, the cor­rection will be approximately 0.03 psi (.2 kPa) for each
inch (2.54 cm) difference in level.

4.7 Method of Operation

It is important that the piston be kept floating in mid-posi­tion, either spinning or oscillating.

4.8 Levelness

The piston assembly should be vertical to within ±1
degree. A 3 degree tilt to piston axis may cause a .13% of
1% error. The deadweight tester is manufactured and test­ed to 1/10th of 1% accuracy, to this degree of levelness. A
tilt piston/cylinder axis causes excessive friction, due to
side loading of the piston against the cylinder.

4.9 Cleanliness

The weights have been manufactured and tested to a pre­cision of 0.05%. A buildup of dirt and grease may cause
the weight value to exceed its original tolerance and
produce erroneous pressure readings.

Periodically clean the weights to assure proper
performance.

5.0 MAINTENANCE INSTR

UCTION

5.1 General Maintenance

The Deadweight tester and test pump are designed to
serve as precise pressure measuring standards. They are
precision built units and should be cared for in the same
manner as other sensitiv

e laborator

y equipment. General
maintenance is limited to cleaning and replacement of O­ring packings, which can be done with tools supplied with
the equipment and requires only limited disassemb

ly of

the gauge tester.
The piston suppor

ting the w

eight platf

orm has been manu­factured to very close tolerances. It has an area accuracy
of 1/20th of 1% and a weight accuracy of 1/20th of 1%.
The deadw

eights ha

e been cer

v

tified tr

le to N.I.S.T.

aceab
with the accuracy of the finished weights better than
1/20th of 1%. To maintain deadweight tester accuracy,

andle the weights with care and keep the piston and

h

ylinder in clean condition.

c
The tester should be flushed with a solvent occasionally,

preferably e very six months, so that operating fluid is
always clean. This will prolong component life , and pro vide

rotection against possible sticky action between the pis-

p

on and cylinder. After cleaning, always lubricate parts

t

efore assembly.

b
If a deadweight tester is not used for long periods of time,

or if a piston and cylinder assembly is being replaced, the

iston should be removed from the cylinder and coated

p

ith the hydraulic fluid, so that it never operates in a dry

w

tate. When removing or replacing the piston, it should be

s
rotated back and forth.

Should a piston or cylinder wear excessively, the tester will
leak oil at a high rate, and will not be operable. A ne w pis­ton and cylinder assembly should be installed.

Piston wear will result from improper or contaminated
lubrication, excessive dirt, or from several y ears of
continuous use.

5.2 Cleaning

Both the Tester and Test Pump should be cleaned thor­oughly whenever the operating fluid is seriously contami­nated with dirt, grit, or chemicals. A good practice is to
clean the test unit prior to anticipated periods when the
unit will not be in use.

5.3 T o Disassemble for Cleaning
(See Figure 2-1, Figure 2-2 and Figure 5-1)

It is necessary to disassemble only those components
which come in contact with the operating fluid. Complete
disassembly is rarely necessary.

a.Remove pipe e xtension assemb ly (58) or piston and

cylinder assembly(67) and (79).

b.Then remove low er or bac k connection pipe assemb ly

(64, 66).

5.4 Removing Pump Handle and Piston

a.Remove f our retaining rings (8).
b.Slide out twoclevis pins (9).
c. Remove clevis (10).
d.Lift hand assembly (4) with piston pin (7) piston (20)

O-ring packing (12, 19) and back-up ring (11)
attached to it, out of piston sleeve (6).

. Remove back-up washers (18, 11) and O-ring pac king

e

(12, 19).
f. Unscre w piston (20)
g.Remove piston slee v e (6) and O-ring pac king (45, 16)

and back-up washers (46, 17)

oir and Fill T ube

Removing Reser

5.5

Unscrew filler plug (35) from reservoir.

a.

v

b.Remove gasket (36).
c. Remo

e reserv

v

oir (5) by remo

ving three screws (24).
d.Twist reservoir to free O-ring packing (21) seat.
e. Remove O-ring packing (21) from body (2).
f. Remove fill tube assemb ly (23) and O-ring pac king (27).
g.Remove plug (22).

5.6

Remo

ving Shuttle V

alve, Shuttle V

alve Plug

and Check V alve

a.Remove set screw (33) and spring (32).
b.Slide shuttle valve piston (31) out of body (2). Operate

back and forth as necessary to dislodge pin (31)
engagement.

c.

valve piston cavity using a plastic shaft less than

1

⁄

8

ve shuttle pin (31) by pushing it into the shuttle

Remo
inch (3mm) in diameter.

.Unscrew shuttle valv e plug (43) and remo v e O-ring

d

acking (27).

p

. Remove check v alv e spring (14) and chec k v alve (44).

e
f. Remove O-ring packing (15) from check valve (44).

5.7 Removing Bleeder Valve and Check V alve Assembly

.Unscrew bleeder v alv e (51)

a

. Unscrew bleed plug (50) and remove O-ring packing

b

27).

(

c. Remove valve spacer (29) check v alve spring (14)

and check valve (44).

d.Remove O-ring (15) from check v alv e (44).

.8 Removing High Pressure Check V alve

5

.Unscrew plug (28) and remove O-ring pac king (27).

a
b.Unscrew adjusting screw (26).
c. Remove guide rod (13), check valve spring (14), and

check valve (44).

d.Remove O-ring packing (15) from chec k v alv e (44).

5.9 Removing Release Valve

a.Remove release v alv e assemb ly (37) and O-ring

packing (27)

b.Disassemble valv e assemb ly b y rotating handle

counter-clockwise until valve stem is free from valve

body.
c. Remove O-ring packing from valve stem.
d.Remove screw (38) and seal (39) b y turning counter-

clockwise.
e.Remove O-ring packing (40).

5.10 Removing Displacement V alve

a.Remove displacement v alv e assemb ly (41).
b.Remove O-ring packing (27).
c. Remove handle from stem by rotating handle counter-

clockwise. This is not required for normal cleaning.
d.Rotate the stem clockwise (using screwdriver in the

slot at the top of the stem) until it is free from body.
e.Remov e n ut bac k-up w ashers and ring packing from

stem.

5.11 Stem Body from Drip Pan

a.Take out three bolts (25). This is not required for

normal cleaning.
b.Remove body assemb ly (2) from drip pan (3). This is

not required for normal cleaning.

5.12 Inspection

Visually inspect these parts for wear, damage, chips ,
cracks and stripped threads:

Body Assembly Threads

Piston

Piston Slee

Displacement Stem and Mating Surf

Back-up Washers

Moving O-r

Dead Weights

Piston and Cylinder Assembly – 1305D

Test Gauges – 1327D

Back-up washers must fit snugly into piston slee v e and
into displacement v
ing) packing for pinch marks, tearing or extrusion. Check
all valve seats f or scratches and roughness .

Replace all worn or damaged parts. Replace all O-ring
packings at each overhaul. Coat O-ring packings with suit­ab
tearing during assembly and tightening of connections.

5.13 Reassemb

When reassembling, use where possible the wrenches
supplied with the equipment. These wrenches permit

le lubr

icant bef

e (6)

v

ackings

ing P

. Then check static (non-mo

e body

alv

ore replacing, to pre

y

l

ace in Body

ent stic

v

king and

nough leverage to seal all connections . Excessiv e tight-

e

ning of parts with tools other than those supplied may

e

ause distortion and eventual failure of threaded portions

c
of the tester body assembly casting. When replacing O­ring packings, coat them with suitable lubricant to prev ent
sticking and tearing during assembly and tightening of
connection.

.14 T o Reassemble

5

Body assembly on drip pans.
Replace body assembly (2) on drip pan (3) using bolts (25).

.15 Replacing Displacement Valve

5

.Place O-ring packing between back-up washers .

a

. Attach back-up washers and O-ring packing to dis

b

placement valve stem with nut.

c. Thread stem into body from the bottom – use screw

driver in the slot at top of stem.

d.Screw stem through body until the back-up washers ,

and O-ring packing are fully enclosed in the body.
CAUTION: Do not damage O-ring packing when

threading stem through body.
e.Screw handle onto stem.
f. Replace displacement v alv e assembly (41) with

O-ring packing (27) in body assembly (2).

5.16 Replacing Release Valve

a.Place O-ring packing (40) in body casting (2) hole.
b.Insert seat (39) into body casting hole.
c. Thread & tighten screw (38) into body casting hole.

CAUTION: Be sure that stem of seat (39) fits into

screw hole.
d.Place O-ring packing on valve stem.
e.Screw handle onto valv e stem.
f. Scre w v alve stem into body until end of stem does not

extend beyond valve body.

CAUTION: Do not damage O-ring packing when

threading valve stem through valve body .
g.Replace O-ring packing (27).
h.Replace release valve assemb ly (37) in body

assembly (2).

5.17 Replacing High Pressure Check Valve

a.Place O-ring packing (15) on check valv e (44).
b.Slide check valve (44), check valve spring (14), and

guide rod (13) into body assembly (2).
c. Replace adjusting screw (26) and screw it in until it

stops.
d. Then turn (26) back two complete revolutions.

Replace plug (28) with O-r

.

e

assemb

5.18 Replacing Bleeder Valve and Chec k

a.Replace O-ring packing (15) on check valv e (44).

Slide chec

.

b

v
c. Replace bleed plug (50) with O-ring packing (27) into

body assemb

5.19 Replacing Shuttle Valve, Shuttle Valve Plug and

-

v

a.Insert shuttle valve piston (3) into body (2).
b.Slide shuttle pin (31) into 1/8 inch (3mm) diameter

opening adjacent to fill tube (23) port. Apply slight

inserting pressure to shuttle pin (31) with plastic shaft

and operating shuttle valve (30) to insure proper

pin engagement.
c. Replace spring (32) directly behind shuttle pin (31)

and secure with set screw (33). Set screw must be

recessed b
d. Replace O-ring packing (15) on check valve (44).

ly (2).

Valve Assembl y

k valve (44), check valve spring (14) and

alve space (29) into body assembly (2).

ly (2).

alve

k V

Chec

y .050 inch (12mm) minim

ing packing (27) in body

um.

igure 2-2Ashcroft Portable Test Pump – Type 1327D

F

. Slide check valve (44) and check valve spring (14)

e

nto body assembly (2).

i

5.20 Replacing Reservoir and Fill Tube

a.Replace plug (22).
b. Replace fill tube assembly (21) and O-ring packing (27).

. Replace O-ring packing (21) on body assembly (2).

c

.Replace reservoir (5) using three screws (24).

d

. Replace filler plug (35) and gasket (36) on body.

e

5.21 Replacing Pump Handle and Piston

a.Replace piston sleeve (6) and O-ring packing (45, 16)

nd back-up washers (46, 17) in body assembly (2).

a

. Place O-ring packing (12, 19) between back-up

b

ashers (18, 11)

w

c. Attach back-up washers (18,11) and O-ring packing

(12, 19) to piston (20).
d.Lubricate piston and sleeve.
e.Attach assembled piston to handle assembly (4).

CAUTION: Do not damage O-ring packing (12, 19)

when sliding assembled piston into piston sleeve (6).
f. Attach cle vis (10) to handle assemb ly and to body

assembly (2), using clevis pins (9) and retaining

rings (8).

5.22 Replacing Piston/Cylinder Assemblies

The piston/cylinder assembly for a deadweight tester
should be replaced when excessive wear is detected on
any component part. Worn piston assemblies are usually
noted by:

1.Excessive leakage of operating fluid through piston

assembly when under pressure.

2.Seizure of piston in cylinder.

3.Damaged piston plate, damaged cylinder threads, or

damage to any component part that results in inferior

performance, or malfunctioning of the unit.

The piston/cylinder assembly is availab le as a unit only.
This assures the user of maximum accuracy in his
Ashcroft Deadweight Tester and maintains certified trace­ability to the N.I.S.T.

6.0 WARRANTY – SHIPPING INSTR UCTIONS –
HOW T O ORDER

6.1 Warranty and Limitation of Liability

All products and parts carry a warranty against defectiv e
material and workmanship for period of one (1) year from
date of shipment.

A complete w
made on the standard quotation form at the time of sale.

6.2 Shipping Instructions For Return T o F actory

Pack securely to pre vent possible damage in shipment.

SHIP T

arranty and limitation of liability statement is

O:

Ashcroft Inc.
250 East Main Street
Stratford, CT 06614
Phone: [phone]
Fax: [phone]

www.ashcroft.com
email: [e-mail]

IMPORTANT – Obtain written authorization to return

uments that ha

instr
hazardous materials such as mercury and radioactive
solutions.
Please furnish the following information with return of
instrument:

e been in contact with corrosive or

v

HIPPING INSTRUCTIONS

S

Company Name
Phone Number

AX Number – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

F
Person to Contact

Address

–––––––––––––––––––––––––––––––––––––––––––

–

–––––––––––––––––––––––––––––––––––––––––––

–

–––––––––––––––––––––––––––––––––––––––––––

–

email Address
Model

– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

Serial Number
Symptoms

– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

––––––––––––––––––––––––––––––

––––––––––––––––––––––––––––––––––––––

– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

.4 T r oub leshooting Chart

5

Corrective

Symptom Case Action

Pressure does
not build up when

Insufficient fluid
level in reservoir.

Add fluid.

pumping handle.

iston O-rings

P

orn or ruptured.

w

Inspect O-rings
and replace as

ecessary. If

n

-rings are new,

O

erify their fluid

v
compatibility.

Bleed port check
valve or shuttle
check valve

Inspect O-rings
and replace as
necessary.

inoperative.
Fill tube assembly

and filter plugged.

Remove and clean
fill tube assembly.
Refill reservoir
with clean fluid.

Shuttle valve
pushed in for
small fluid dis-

Pull shuttle valve
outward from

body.
placement when
large fluid dis­placement is
required.

High pressure
does not increase
when pumping
handle while
shuttle valve is
pushed in.

Air trapped in
pump piston.

Rapid pump han­dle strokes which
lessen fluid flow
through the pump

Reprime pump.

Operate pump

handle with

smooth moderate

action.
piston.

Pressure builds up
when pumping
handle, but
decreases when
pumping is
stopped.

Leakage at outlet
or gauge connec­tions(s).

High pressure
check valve O-ring
worn or ruptured.

Defective pressure
release valve.

Inspect connec-

tions and tighten

as necessary.

Inspect O-ring and

replace as neces-

sary.

Hand tighten

release valve.

Inspect release

valve seating sur-

aces

f

necessary.

Remove release

valve seat and

inspect O-ring

underneath.

Replace as

necessary.

. Replace as

Corrective

Symptom Case Action

Pump handle rises
after pumping.

Piston plate (with

eadweights)

d
drops rapidly.*

Unable to hold

High pressure
check valve O-ring
worn or ruptured.

Worn piston and

ylinder assembly.

c

Inspect O-ring
and replace as
necessary.

Use a heavy oil

emporarily.

t
Replace piston &
cylinder.

constant pressure.
Stacked dead-

weights wobble
when spinning pis­ton plate.*

Damaged dead­weights.

Check dead­weights for visible
damage (bends,
dents, nicks, etc.)
and alignment.

Piston plate
assembly will not
spin.*

Too heavy an oil
grade being used.

Flush & fill unit
with proper grade
of oil (SAE 20 or
SAE 10).
Replace piston &
cylinder assembly.
Disassemble and
flush complete test
unit with kerosene
or alcohol.
Reassemble unit.

*These symptoms apply only to the 1305D Deadweight Testers.

4A

REPLACEMENT PARTS – D SERIES – BLUE COLOR

PORTABLE DEADWEIGHT TESTER – TYPE 1305D

PORTABLE TEST PUMP – TYPE 1327D

Qty.

Item Per

No. Asmy. Part No. Description

1 603D001-01 Body Only, Pump

2

1 LB285A Drip Pan

3

1 603X010-01 Handle

4

A 1 636X003-01 Grip

4

1 LF341A Reservoir

5

1 610C001-01 Sleeve, Piston

6

1 LA810A Pin, Piston

7

4 BA221L Retaining Ring

8

2 LB810A Pin, Clevis

9
0 1 LD278A Clevis

1
11 1 607A002-02 Backup Ring
12 1 607A001-02 “O” Ring

1 LB802 Guide Rod

13
14 3 LA242 Spring, Valve
15 4 SSSS882 “O” Ring

1 607A001-03 “O” Ring

16
17 1 607A002-03 Backup Ring

8 1 6

1
19 2 607A001-01 “O” Ring

0 1 614C001-01 Piston, Dual Diameter

2
21 1 BA122R “O” Ring 2.90
22 1 604A003-01 Plug 15.40
23 1 615B001-01 Fill Tube Assembly 92.70
24 3 605A002-06 Screw, Round Head 1.70
25 3 SAFH37 Screw, Allen Socket Head 1.70
26 1 LK260A Adjusting Screw 8.90
27 6 BA122V “O” Ring 1.70
28 1 LK696A Plug 19.40
29 1 — Spacer, Valve, Use Item 50
30 1 614B002-01 Piston, Shuttle 68.10
31 1 609A001-01 Pin, Shuttle 15.80
32 1 612B001-01 Spring, Shuttle Pin 1.70
33 1 605A001-01 Set Screw 162.00
34 2 LP696 Plug, Shipping 4.40
35 1 604B002-01 Plug, Fill 13.70
36 1 607A003-01 Gasket, Fill Plug 2.60
37 1 LAH292C Valve Assembly, Release 165.00
37a 1 328A105-01 Knob 14.10
37b 1
37c
38 1 LD83A Scew, Seat 13.70
39 1 LD911A Seat 5.50
40 2 BA122U “O” Ring 1.70
41 1 LAG292C Valve Assembly, Displacement 187.00
41a
41 b 1 LE83 Nut 13.40
41c 2 LB122 Backup Washer 1.70
41d
41e
42 1 LA521A Sleeve 19.70
43 1 604B001-01 Plug, Shuttle Valve 59.30
44 3 609B003-01 Check Valve 49.60
45 1 BA122W “O” Ring 1.70
46
50 1 604B004-01 Plug, Bleed 36.70
51 1 609B004-01 Bleed Valve 27.70
52
58

07A002-01 Back

LD870B V

LAH292A Body

1

328A105-02 Knob 14.10

1

LB870A

1
1

1 607A002-04 Backup Ring 2.30

1
1

G292A Body, Displacement Valve 111.00

LA

LEE236

LK227 Pipe Extension Assembly 180.00

up Ring

e Stem 50.20

alv

, Release Valve 88.20

Stem

Nameplate

41.70

4.70

Qty. Unit

Item Per List

No. Asmy. Part No. DescriptionPrice

59 2 LD227A Bushing2 9.50

0 2 LN141 Adapter 25.40

6
61 4 LD186 Collar 9.50

2 4 LD117 Nut, Adapter 25.20

6

3 1 LH227A Extension Pipe 67.00

6

4 1 LJ227 Lower Connection Pipe Assembly

6

5 1 LF227A Lower Connection Pipe 104.00

6

6 1 LG227A Back Connection Pipe 104.00

6

7 — Low Pressure Piston Assembly

6

9 – High Pressure Piston Assembly

7

82 1 LF217 Disc Seat 12.30
83 1 LM141 Adapter 37.10

*Piston and bushing can only be replaced as a complete assembly, the

part number for this assembly is for:
1305DH – part no. 617B001-01 List Price $155.04
1305DH – part no. 617B001-02 List Price $163.83

LM869 psig 528.00

1

LN869 psig 552.00

1

1 617C002-01 “O” Ring Kit, Oil 26.70
1 617A003-01 Overhaul Kit, Oil (see note 1) 180.00
1 LH244A Wrench (1 x 11⁄8) 67.60
1 LH244 Wrench (7⁄8 x 1) 63.30
1 LG244 Wrench (

5

⁄8) 33.30

PARTS IN THE SECTION BELOW ARE USED IN
HYDRAULIC SERVICE UNITS. THESE UNITS CAN BE
RECOGNIZED BY THE INCLUSION OF THE LETTER “H”
IN THE MODEL DESIGNATION.

12 1 607A004-02 “O” Ring 2.10
15 4 BA122H “O” Ring 2.60
16 1 607A004-03 “O” Ring 2.10
19 2 607A004-01 “O” Ring 2.60
21 1 BA122E “O” Ring 4.20
27 6 BA122D “O” Ring 2.50
37 1 LAH292D Valve Assembly, Release 165.00
40 2 BA122G “O” Ring 2.10
41 1 LAG292D Valve Assembly, Displacement 191.00
45 1

1 Overhaul kit includes all O-rings required to overhaul pump as

well as piston and bushing assembly.

BA122F “O” Ring 5.00
1 LGG236A Nameplate, Hydraulic 7.50
1 617C002-02 “O” Ring Kit, Hydraulic 41.10

617A003-02

1

Overhaul Kit, Hydraulic (see note 1)

PARTS IN THE SECTION BELOW ARE USED IN OXYGEN
(DISTILLED

W

A TER) SERVICE UNITS WHICH ARE IDENTI­FIED BY THE INCLUSION OF THE LETTER “O” IN THE
MODEL DESIGNATION.

ning Label 2.40

47
58
59 3 LD227B Bushing 36.40
60 3 LN141A Adapter 35.30
61 6 LD186A Collar 12.50
62 6 LD117A Nut, Adapter 34.70
64
83 1 LM141A Adapter 75.90

LK227A

1

1 LJ227A Lower Connection, Pipe Assembly

LKK236

1

Oxygen W
Pipe Extension Assembly 252.00

ar

AVAILABLE WEIGHTS & WEIGHT SETS

INDIVIDUAL WEIGHTS

Part

N

umber Units Low High

LF199D psig 1 5
LPF462 psig 2 10
LAZ199D psig 5 25
LAZ199 psig 10 50
LAZ199A psig 20 100
LAZ199B psig 40 200
LAZ199C psig 100 500

PSI WEIGHT SETS

Weight Set

Part Carrying 25 50 100 200 500

Number Case psi psi psi psi psi

LBH199C 1000 psi 1 3 2 3 –
LBH199B 2000 psi 13232
LBH199A 3000 psi 1 3 2 3 4
LBH199* 5000 psi 1 3 2 3 8

LBH199D

*For complete 10,000 psi weight set, order both part no. LBH199 and LBH199D.

with

5000 to

10000 psi

– –

Pressure Range

Number of Weights

by High Pressure Value

– –10

Ashcroft Inc. Sales and Customer Service Locations

World Headquarters
U.S.A.

A

shcroft Inc.250 East Main Street
Stratford, CT 06614-5145 U.S.A.
Tel: [phone]
Fax: [phone] (Domestic)
Fax: [phone] (International)
email: [e-mail]
www.ashcroft.com

International Operations
Brazil (Willy Plant)

Willy Instrumentos de Medicao e
Controle Ltda.
An Ashcroft Inc. Company
Rua Senador Vergueiro No. 433
09521-320 Sao Caetano Do Sul
Sao Paulo, Brazil
Tel: [phone]
Fax: [phone]
Fax: [phone]
Fax: [phone]
Alexandre Nakashato B14 #
Contact: 55-11-4224-7412
email: [e-mail]

Commercial Gauge Plant

Willy Instrumentos de Medicao e
Controle Ltda.
Divisao Commercial Gauge
Rua Joao Pessoa, 620
CEP. 09520-000
Sao Caetano Do Sul, Sao Paulo, Brazil
Tel: [phone]
Fax: [phone]
Contact: Alexandre Nakashato-Sales
email: [e-mail]

Canada

Ashcroft Instruments Canada Inc.
151 Steeles Ave. East, Upper Level
Milton, Ontario L9T 1Y1
T

el: 905-864-4989 Ext. 610
Fax: [phone]
email: [e-mail]

China

Ashcroft China Representative Office
Room 203, First Shanghai Center,
No. 39 Liang Ma Qiao Road
B

eijing, China 100016

Tel: [phone]

86-10-8453-5259
Fax: [phone]
Contact: Mr . Wei Dong (Sales Manager)

(C) 86-13901216821
Mr. Peter W ei (Sales Application Engineer)
(C) 86-13911185210

email: [e-mail]

[e-mail]
[e-mail]

France

Ashcroft GmbH Sales Office
Division Instrumentation
206 Rue des Campanules, Le Mandinet
F77185 Lognes
France
Tel: [phone]
Fax: [phone]
Contact: Jackier Lacamus
email: [e-mail]

Germany

Ashcroft Instruments GmbH
Postfach 11 20
Max-Planck-Strasse 1
D-52499 Baesweiler, Germany
Tel: [phone]
Fax: [phone]
Contact: Mr . Joerg Muller49-24-01-808-134 or

Mr. Dietmar Heinen49-24-01-808-165

email: [e-mail]

.heinen@ashcrofteurope. com

dietmar

Mexico

A

shcroft Instruments Mexico,
S.A. de C.V .
Henry Ford No. 114
Esq. Foulton
Fracc. Industrial San Nicolas
54030 Tlalnepantla, Edo De Mexico
Tel: [phone]

525-55-310-8983
5

25-55-311-2829

525-55-311-2875
Fax: [phone]
Contact: Mr . Javier Mendieta or

Ms. Elliette Rovira

email: [e-mail].

[e-mail]

Saudi Arabia

Joint Venture with
Al-Rushaid -Investment Co., Ltd.
P.O. Box 10145, Support Industry Park
Section E, Lot 1, Block 5K
Saudi Arabia 31981
Tel: [phone]
Fax: [phone]
Contact: D. R. Pai

(P) 966-3-341-0278 x 13 or
(F) 966-3-341-0696Rahul V J

email: [e-mail]

[e-mail]

Singapore

Ashcroft Instruments Singapore Pte. Ltd.
Block 1004 Toa Payoh North
#07-15/17
Singapore 318995
Tel: [phone]
Fax: [phone]

Mr.John Wong(Director,Asia Pacific) or

Contact:

Mr.Joseph Tan(Area Sales Manager)

email: [e-mail].

[e-mail].

[e-mail]

sgJoe.T

United Kingdom/Sales Office

Ashcroft Instruments GmbH Sales Office
Cambridge Office
Unit 5 William James House
Cowley Road
Cambridge CB4 0WX
Tel: [phone]
Fax: [phone]
Contact: Selwyn Hammond,Territory

Sales Manager, South

email: [e-mail]

Visit our web site www.heise.com

All specifications are subject to change without notice.
All sales subject to standard terms and conditions.

Ashcroft Inc. I&M002-10095 4/02 (250-1526) 1P10/92 8P5/07

©

Venezuela

Manufacturas Petroleras Venezolanas
KM 7 Carretera A
El Mojan Calle 18
#15B355 ZONA
Ind. Norte Sector Canchancha
Maracaibo Edo Zulia Venezuela
Tel: [phone]/9762
Fax: [phone]
email: [e-mail]
www.mapvensa.com