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259
PRESSURE INSTRUMENTS
PROCESS GAUGES
ACCESSORIES
& OPTIONS
INDUSTRIAL GAUGES
STAINLESS STEEL CASE GAUGES
SANITARY GAUGES
TEST INSTRUMENTS
DIAPHRAGM SEALS/INSTRUMENT ISOLATORS
COMMERCIAL GAUGES
SPECIAL APPLICATION COMMERCIAL GAUGES
PRESSURE TRANSDUCERS/TRANSMITTERS
TEMPERATURE INSTRUMENTS
ACCESSORIES AND OPTIONS
Throttle Screws ........................................... 261
Pulsation Dampener .................................... 261
Pressure Snubber........................................ 261
Steel Needle Valve ....................................... 262
Siphons ....................................................... 262
Chemiquip Valve Snubber ........................... 263
Chemiquip Limiting Valve ........................... 263
Diaphragm Seals ......................................... 263
Electric Warning Contacts ........................... 264
Conversion Kit ............................................. 264
1
4
/2˝ Ring Wrench, Type A-1285 ................... 265
6˝ Ring Wrench, Type A-1286 ...................... 265
1
2
/2˝ & 31/2˝ Type 1009 Duralife Tools .......... 265
Cone Tool, Type A-1287 ............................... 266
Tool Kit, Type 1105T ..................................... 266
Hand Jack Set, Type 3220 ........................... 266
Cocks, 1092 Tea Handle .............................. 266
Cocks, 1094 Lever Handle Union ................ 266
Cocks, 1095 Lever Handle ........................... 266
Test Gauge Carrying Case 2005 .................. 266
Options .................................................267-268
BIMETAL THERMOMETERS
DIRECT-READING THERMOMETERS
HANDHELD THERMOMETERS
REMOTE-READING GAS THERMOMETERS
REMOTE-READING VAPOR THERMOMETERS
DIGITAL THERMOMETERS
TEMPERATURE REGULATORS
THERMOWELLS
PRESSURE/TEMPERATURE SWITCHES
PRESSURE SWITCHES
TEMPERATURE SWITCHES
ACCESSORIES & OPTIONS
Consult factory for guidance in product selection
Phone (203) 378-8281 or visit our web site at
www.ashcroft.com
APPLICATION DATA
Page 2
260
Consult factory for guidance in product selection
Phone (203) 378-8281 or visit our web site at
www.ashcroft.com
Page 3
261
Ashcroft® Accessories
Throttling Devices
A throttling device should be used when a pressure gauge is
subjected to rapid pressure fluctuations, which make the gauge
difficult to read because of rapid pointer movement. Such a
device reduces pressure impact, slows the speed and range of
pointer movement, and prolongs gauge life.
Throttling effect is obtained by installing a restricting orifice
between the gauge socket connection and the Bourdon tube.
Severe service applications are characterized by the presence of
significant levels of pressure pulsation and/or vibration. Gauges
THROTTLE SCREWS
The simplest means of providing a
restriction in the socket, a throttle screw
or throttle plug, should be ordered with
the gauge. Threaded or pressed into
an instrument socket, the throttle screw
orifice selected is based on the viscosity
of the pressure fluid, rapidity of pressure
fluctuations, and the amount of dampening effect desired.
A smaller orifice should be used for
low viscosities, high frequencies, high
pressure and reduced pointer amplitude. To accommodate these variables,
throttle screws are available in these
sizes: 0.0135, 0.020, 0.031, 0.040, and
0.070 inches, in brass and stainless
steel. When orifice size or service condition is not specified, a 0.020-inch orifice
will be supplied on Duragauge
gauges and a 0.0135, on 25-35 1009
and 63 and 100mm 1008S.
PULSATION DAMPENER
Threads onto a gauge socket and provides restriction by means of a moving
pin, which may be placed in either of
five different sized holes, and thus
allows the user to vary the amount of
dampening to suit requirements. The
pulsating pressure moves the pin up
and down, providing a self-cleaning
action. Dampeners are shipped with
a pin in the “middle” hole, and may be
used in either a vertical or horizontal position. Maximum pressure is 5000 psi.
Type NPT
Number Conn. (oz.)
25-1106B 1⁄4 Brass 4
50-1106B 1⁄2 Brass 8
25-1106D 1⁄4 Steel* 4
50-1106D 1⁄2 Steel* 8
25-1106S 1⁄4 Stainless steel 4
50-1106S 1⁄2 Stainless steel 8
* Internal parts are stainless steel.
should be protected from severe pressure pulsation by the
inclusion of a dampener such as a throttle plug/screw or porous
metal snubber. If the pulsation is extreme, a liquid-filled gauge,
with dampener, should be used. A liquid-filled gauge will also last
significantly longer than a comparable dry gauge when vibration
is present. If the vibration levels are extreme, the only solution
may be to remotely mount the gauge away from the source of
vibration. In that case capillary tubing may be used to connect
the gauge to the pressure source.
Throttle screw
®
pressure
Weight
Material
PRESSURE SNUBBER
Type NPT
Number Conn. Housing Filter Disc Rating
25-1112B 1⁄4
50-1112B
25-1112S 1⁄4
50-1112S
25-1112M
50-1112M
Porosity
Opening (Inches) Diff. Press.
D 0.005 6.5
E 0.0025 3.0
G 0.0008 1.1
HX 0.0006 0.4
Material
1
⁄2
1
⁄2
1
⁄4
1
⁄2
Max Pore Cap. CFH at 1 psi
Brass
303
stainless steel stainless steel
R Monel Monel 15,000
stainless steel
Max psi
316
10,000
316
15,000
For use with
Oil
(50 to 500 S.S.U.)
Water & Light Oils
(Under 50 S.S.U.)
Air, Steam
and Gases
Mercury
Manomometers
Consult factory for guidance in product selection
Phone (203) 378-8281 or visit our web site at
www.ashcroft.com
Used for dampening and filtering, the snubber has a metal
disc available in four standard
grades of porosity. The one
best suited for the application
can be selected from the chart,
using the same guidelines as for
throttle screws. Due to the large
filter area, the snubber has less
tendency to clog than orificetype devices. All-metal construction permits the snubber to be
washed in a variety of common
solvents.
Page 4
263262
STEEL NEEDLE VALVE
The steel needle valve is an economical, adjustable throttling device for any
severe gauge application. It provides the most practical means for varying the
orifice to determine the exact orifice for any specific service condition. The
valve has an internal seat and is of bar stock construction.
A
NPT Conn.
1
⁄4 21⁄8
1
⁄2 21⁄4 11⁄4 21⁄2 31⁄16 33⁄16 21
Type Numbers Pressure Ratings
NPT
Conn.
Type Valves 100°F 550°F 850°F 1000°F
Carbon steel
1
⁄4 25-7001L with
12-14% chrome
1
⁄2 50-7001L Stainless steel
stem
1
⁄4 25-7004L
1
⁄2 50-7004L
B C D – min. E F Weight oz.
Lock Bonnet
Material Noncorrosive Service (psi)
316 stainless
steel
SIPHONS
In order to prevent live steam
from entering a pressure gauge
Dimension – Inches
7
⁄8 21⁄2 3 31⁄8 8
10,000 7735 — —
C-Max
7000 4500 3895 3535
condensing hot vapors (not just
steam) are present.
D
B-Max
Bourdon tube, a siphon filled with
water should be installed between
the gauge and the process line. If
freezing of the condensate in the
loop of a siphon is a possibility, a
diaphragm seal should be used to
isolate the gauge from the process
steam. Also use siphons whenever
Type NPT
Number Conn.
25-1098 I
25-1098 B
25-1098 S
Grade A from –20° to 400°F
50-1098 S
Grade A from –20° to 400°F
50-1098 SD
Grade A from –20° to 400°F
50-1098 CD
Grade T 22 from –20° to 400°F
50-1098 NS
steel, Type 316 3981 psi from –20 to 100°F
50-1098 ND
steel, Type 316 5840 psi from –20° to 100°F
25-1100 A
25-1100 I
25-1100 IL
25-1100 IN
25-1100 B
25-1100 BL
1
⁄4 Iron 500 psi @ 400°F
1
⁄4 Brass 250 psi @ 400°F
ASTM A-106 seamless steel, 338 psi @ 1000° to 3360 psi
1
⁄4
ASTM A-106 seamless steel, 333 psi @ 1000°F to 3000 psi
1
⁄2
ASTM A-106 seamless steel, 420 psi @ 1000°F to 3740 psi
1
⁄2
ASTM A-213 seamless steel, 1048 psi @ 1200°F to 9550 psi
1
⁄2
Seamless stainless 294 psi @ 1500°F to
1
⁄2
Seamless stainless 336 psi @ 1500°F
1
⁄2
1
⁄4 Stainless steel
1
⁄4 Iron – 63⁄8˝ Long
1
⁄4 Iron – 8˝ Long
1
⁄4 Iron – Angle
1
⁄4 Brass – 53⁄8˝ Long
1
⁄4 Brass – 8˝ Long
Material Capacity
• Pig Tail Siphon–Number 1100
Series,
1
⁄4˝ sizes: to 500 psi and
400°F.
• Coil Pipe Siphon –Number 1098
Series,
1
⁄4,˝ 1⁄2˝ sizes: to 9550 psi and
400°F.
500 psi @ 400°F
250 psi @ 400°F
Ashcroft® Accessories
E-CLOSED
F-OPEN
A Pipe
Conn.
Type 1100
Type 1098
CHEMIQUIP PRESSURE LIMITING VALVE SNUBBER
Type Number Conn. Material Available Ranges
500-1000 psi
50-2550D
(2) Specify porosity designation.
(3) Use code XFS for factory setting.
(4) Meets NACE MR01-75 requirements.
CHEMIQUIP PRESSURE LIMITING VALVE
Type Number Conn. Material Available Ranges
(1) Use code XFS for factory setting.
Porosity
Type of Service Designations
High viscous fluids (over 500 S.S.U.) C
Oil (225-500 S.S.U.) D
Water and light oils (30-225 S.S.U.) E
Vapor and low viscosity fluids (Below 30 S.S.U.) F
Air or other gases G
Extreme gas pulsations HX
(1)
25-255B
25-255S
100-800 psi L
25-5460
2500-10,000 psi N
50-5500
1
(1)
⁄4 NPTF Brass
1
⁄4 NPTF 303 SS
1
(3)
⁄2 NPTF 316 SS 1000-3000 psi
1
⁄4 NPTF 303 SS
1
⁄2 NPTF 303 SS
10-150 psi
150-500 psi
(4)
800-2500 psi M
10,000-18,000 psi O
(1)
Style
(2)
Ashcroft® Accessories
Assures positive, repeatable
performance of the instrument
by protecting against surges
and pulsations. Automatically
shuts off when overpressure
occurs and is restored when
pressure falls below preset
values.
Protects pressure instruments
against surges and pulsations.
Provides automatic positive protection and accurate,
repeatable performance.
Automatic pressure shut-off.
Built-in snubber enhances
instrument, protecting
performance.
DIAPHRAGM SEALS
Designed for use with pressure gauges or switches or transmitters on
process applications where:
• Process element materials capable of withstanding corrosive effects
of certain fluids are not available.
• The process fluid being measured would normally clog the pressure
measuring element.
• The process fluid in the measuring element might freeze due to
changes in ambient temperatures.
A diaphragm assembly fabricated of materials that will withstand
various corrosive media encountered, separates the measuring element
from the process fluid. Since the space between the diaphragm and the
measuring element is solidly filled with liquid, any movement of the diaphragm caused by a change in the process pressure will be indicated by
the instrument.
Ashcroft diaphragm seals are normally mounted directly to the socket
of an instrument. A flexible stainless steel armored line assembly, is available for mounting the gauge at some point away from the seal location
to provide easy reading or to limit the temperature at the gauge to 150°F
maximum.
Diaphragm seals (isolators) with filled, capillary line assemblies are
another good solution to the problem of hot liquid and gas lines. Due to
the small diameter of the flexible line (capillary) a five foot line length will
usually assure that the temperature of the gauge connection does not
exceed 150°F. This solution is also superior to a siphon on steam service
where the water filled siphon might freeze.
Consult factory for guidance in product selection
Phone (203) 378-8281 or visit our web site at
www.ashcroft.com
Consult factory for guidance in product selection
Phone (203) 378-8281 or visit our web site at
www.ashcroft.com
Page 5
Ashcroft® Accessories
265264
Ashcroft® Accessories
ELECTRIC WARNING CONTACTS
The Ashcroft® 2265 electric contact is
an ideal accessory to turn on a signal
light, sound an alarm, or operate a pump
or valve. The contacts can easily be set
so that a circuit can be closed or opened
at a desired pressure or temperature.
Settings can be easily made in the
field without removing the instrument
from service. Contact adjustment is made
externally with a removable key to make
the instrument virtually tamper proof.
The contact is designed for easy
installation on Types 1279, 1377 and
1379 Duragauge pressure gauges
(either stem or flush mounted), Type
1125 differential pressure gauges, or
Type 600A Duratemp dial thermometers.
Contacts are equipped with adjustable
magnets to eliminate chatter caused by
vibration. A plug-in connector with five
feet of electrical cable is standard.
CONVERSION KIT
For field converting 41⁄2˝ 1279(*)S and
1
4
⁄2˝ and 6˝ 1379(*)S Duragauge®
gauges to a sealed case design
suitable for either hermetic sealing or
liquid filling. Kit includes (Typical A1280
kit shown):
• O-ring for front case seal.
• Acrylic window.
• Elastomeric diaphragm (Buna-N) for
rear case seal.
• Glass filled polypropylene threaded
ring for rear of case.
• 302 stainless steel rear cover
and mounting screws.
• 303 stainless steel and Monel
throttle screws.
HOW TO ORDER THIS CONVERSION KIT
FOR:
1
⁄2˝ 1279, lower connected –
4
order part no. 101A202-01.
1
⁄2˝ 1279, back connected –
4
order part no. 101A2023-01.
1
⁄2˝ 1379, lower connected –
4
order type A1280 Kit.
1
⁄2˝ 1379, back connected –
4
order type A1283 Kit.
˝ 1379, lower & back connected –
6
order type A1284 Kit.
Availability
Use with Code
Ashcroft Description 45 60
Model No. 4
Dial Dial
1279 Duragauge X — X X
1377 pressure X X — X
1379 gauge X X X X
1125 D/P gauge X X X X
600A-02 Duratemp X X — X
600A-03 remote X X X X
600A-04 thermometer X X X X
(1)
Flush mounting requires type 1278 flush mounting ring.
All specifications are subject to change without notice.
Model Code Contact arrangements
XED High and low contact
XEE Double high contact
2265
XEF Double low contact
XEG “OFF” at low and high,
and “ON” in between
“O” Ring
1
⁄
2˝ 6˝
Acrylic
Window
Threaded
Ring
Surface
Mounting
Stem Flush
(1)
(1)
Flush
ELECTRICAL CONTACT SWITCHING CAPACITY
250V Maximum Voltage
30 WDC Maximum Switching Power
50 VA AC Maximum Switching Power
1A Maximum Current
Indicating accuracy of Ashcroft Duragauge,
above 300 psi with contact: Pointer not
carrying contact – 1.0%.
Pointer carrying contact – 1.5%. For ranges
below 30 psi, add an additional 1⁄2% to
indicating accuracies.
Elastomeric
Diaphragm
With Integral
“O” Ring
Rear
Cover
1
2
/2˝ & 31/2˝ TYPE 1009 DURALIFE TOOLS
1
2
/2˝ Ring wrench
old design
PN 266B135-01
31/2˝ Ring wrench
old design
PN 266B134-01
TYPE A-1285
Pointer puller body
P/N 292A133-01
Pointer puller screw/pin
P/N 112A381-01
31/2˝ Ring removal
current design
PN 101B221-01
Span wrench
old design
P/N 266A137-01
TYPE A-1286
21/2˝ Ring removal
current design
PN 101B221-02
1
2
/2˝ & 31/2˝ Nest old design
PN 266B136-01
TYPE A-1285
Ring Wrench – 41⁄2˝
(For installing front threaded rings in
1
4
TYPE A-1286
Ring Wrench – 6˝
(For installing front threaded rings in
6˝ Duragauge gauge)
Pointer staker
P/N 188A101-01
⁄2˝ Duragauge gauge)
1
3
/2˝ Nest current design
PN 101B220-01
1
2
/2˝ Nest current design
PN 101B220-02
Consult factory for guidance in product selection
Phone (203) 378-8281 or visit our web site at
www.ashcroft.com
Consult factory for guidance in product selection
Phone (203) 378-8281 or visit our web site at
www.ashcroft.com
Page 6
267266
TYPE A-1287
Cone Tool
For installing diaphragm and garter
spring on back connected liquid-filled
or hermetic sealed Duragauge
®
gauges.
TOOLS
Hand Jack Set – gauge pointer
remover and a pointer set to secure
pointer to the shaft. Type No. 3220.
Gauge Tool Kit – A complete kit for
gauge maintenance. Includes hand
jack set, screw driver, five reamers,
pin vise holder, wiggler and tweezer all
packed in a neat carrying case. Ideal
for a gauge maintenance shop. Type
No. 1105T.
COCKS
• 1⁄4˝ brass Tee Handle Cock
No. 1092 – Wgt. 3 oz.
1
•
⁄4˝ brass Lever Handle Union Cock
No. 1094 – Wgt. 10 oz.
1
•
⁄4˝ brass Lever Handle Cock
No. 1095 – Wgt. 4 oz.
• All rated 100 psi air.
TEST GAUGE CARRYING CASE
This rugged blow-molded high-density
polyethylene carrying case accommodates the standard 4
Ashcroft Type 1082 analog test gauge.
It accepts both lower and back connect
gauges. A foam insert protects the
gauge when not in use. Type No. 2505.
1
⁄2,˝ 6 & 81⁄2˝
TYPE A-1287
TYPE NO. 1095
TYPE NO. 3220
Ashcroft® Accessories
TYPE NO. 1094
TYPE NO. 1105T
TYPE NO. 1092
Options for Process, Stainless
Steel, Test and Industrial
Pressure Gauges
CODE DESCRIPTION PRESSURE GAUGE TYPE
˝)
2
/
1
2
1
DURAGAUGE GAUGES
1259
XLL PLUS! Performance
XBF WaII mounting bracket
XFW Back flange
XFF Front flange
XUC U-clamp
XLJ Dry liquid-fillable gauge
XOS Overload stop STD
XVS Underload stop STD
XTS Throttle screw
XTU Throttle plug
XS4 Slotted link movement (decrease)
XRJ Slotted link (increase)
XAP Adjustable pointer
XMP Micrometer pointer STD STD
XSH Red set hand stationary
XEO Red set hand adjustable
XEP Maximum pointer
XEQ Minimum pointer
XPD Plastic window STD STD
XSG Safety glass
XRG Regular glass STD STD STD STD STD
XDA Dial marking
XNN Paper tag
XNH Stainless steel tag
XAB Absolute pressure
XAJ 1⁄2% optional accuracy STD STD
XAN 1% optional accuracy STD STD
XBD Black dial
X6B Oxygen-cleaned gauges (gaseous)
XTB Tip bleed
XED High and low electric contacts
XEE Double high-electric contacts
XEF Double low-electric contacts
XEG Electric contacts off at low or
high and in-between
XGV Silicone-filled gauge
XGX Halocarbon-filled gauge
XCH Carrying handle
XC4 Calibration Chart
NOTES:
The options listed above are only a partial listing. For other options on these or other pressure instruments please call the factory for availability.
(1) Available on 63mm and 100mm.
(2) Available on 40mm and 50mm. Standard window material is glass for 40/50mm 1008S.
(3) Standard 63 & 100mm.
˝, 3
/
1009 (2
˝, 6˝)
2
/
1
1009 (4
TEST GAUGES
1008S
(1)
(3)
STD
(3)
STD
(2)
STD
1490/1495 SERIES
1010, 1017, 1220
Consult factory for guidance in product selection
Phone (203) 378-8281 or visit our web site at
www.ashcroft.com
Consult factory for guidance in product selection
Phone (203) 378-8281 or visit our web site at
www.ashcroft.com
Page 7
268
Ashcroft® Options
STATIONARY RED SET HAND
Stationary Red Set Hand
to indicate a specific pressure. Ring must
be removed to move the hand.
MAXIMUM POINTER
OVERLOAD STOP SPECIAL DIAL
Overload Stop
to protect gauge system against extreme
overpressure.
VACUUM STOP
Special Dial
ranges different from standards, or custom
artwork, available on application.
OPTIONAL WINDOWS
Maximum Pointer
available for gauges 4
1
⁄2˝ size and
larger. Indicates maximum pressure
attained. Can be reset by a knob on
outside of window.
TIP BLEEDER
TIP BLEED
These bleeders allow trapped air to be
removed from the Bourdon tube. They can
also be used for back-flushing or cleaning the system. The tip bleed is available
with 316 stainless steel systems. It is
accessible by removing the pressure relief
back. Tip bleeders are available to 23,000
psi. The capillary bleeder provides an
external case connection to the internals
Vacuum Stop
to protect low range gauges against
vacuum.
CAPILLARY BLEEDER
CAPILLARY
BLEED
of the Bourdon tube. It may be used as a
pressure testing tap for gauge inspection
without removing the gauge from service.
Capillary bleeders are available in bottom
connected gauges only. The capillary
bleeder is available in 300 Series stainless
steel and limited to 4
1
/2˝ 1379(S)S case
with 316 stainless steel system. Capillary
bleeders are available to 1000 psi.
Plastic Disc – optional for glass window
Laminated Safety Glass – optional for
glass window
Nonglare Glass – optional for glass window
TYPE 1278M FLUSH MOUNTING RING
Gauge Ring A “B”-Three Screws
Size O.D. Dia.
(inches) (inches) (inches) Size
1
4
⁄2 6.000 5.625 #10-24 x 15⁄8˝
6 7.765 7.25
1
⁄4-20 x 11⁄2˝
Used to flush-mount gauge types 1188,
1220, 1279 and 1379. Standard finish is
black; polished stainless steel finish is
available at an extra charge, 4
1
⁄2˝ and 6.˝
Consult factory for guidance in product selection
Phone (203) 378-8281 or visit our web site at
www.ashcroft.com
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