Versa-Matic N50 User Manual

DATA SHEET, SERVICE & OPERATING MANUAL

DATA SHEET, SERVICE & OPERATING MANUAL

DATA SHEET, SERVICE & OPERATING MANUALDATA SHEET, SERVICE & OPERATING MANUAL

AIR OPERATED

AIR OPERATED

AIR OPERATED AIR OPERATED

DOUBLE DIAPHRAGM PUMP

DOUBLE DIAPHRAGM PUMP

DOUBLE DIAPHRAGM PUMPDOUBLE DIAPHRAGM PUMP

Full Flow

Full Flow

Full FlowFull Flow

High Pressure Series

High Pressure Series

High Pressure SeriesHigh Pressure Series

Table of Contents

Performance Curve 1
Dimensions 1
Engineering Data & Temperature limitations 2
Explanation of Pump Nomenclature 2
Principle of Pump Operation 3
Installation guide 3
Troubleshooting 4
Recycling 4
Important Safety Information 4
Warranty 5
Service 5
Air Valve Overhaul 5
Wet-side Overhaul 5
Parts List 6
Assembly Drawing 7
Technical Notes 8
Technical Notes 9
Service / Maintenance Log 10

HG-CF-1042 Rev. C - 03/28/03

DATA SHEET, SERVICE & OPERATIN G MANUAL

DATA SHEET, SERVICE & OPERATIN G MANUAL

DATA SHEET, SERVICE & OPERATIN G MANUALDATA SHEET, SERVICE & OPERATIN G MANUAL

N50

N50

N50N50

AIR OPERATED

AIR OPERATED

AIR OPERATED AIR OPERATED

DOUBLE DIAPHRAGM PUMP

DOUBLE DIAPHRAGM PUMP

DOUBLE DIAPHRAGM PUMPDOUBLE DIAPHRAGM PUMP

Full Flow High Pressure Series

Full Flow High Pressure Series

Full Flow High Pressure SeriesFull Flow High Pressure Series

N50 Full Flow High Pressure Pump

Performance based on water at ambient temperature

HG-CF-1042 Rev. C - 03/28/03

Performance Curve

Page 1

TECHNICAL DATA

FLUID CONNECTIONS CAPACITY MAX SOLIDS MAX DISCHARGE HEAD DISPLACEMENT/STROKE

2” NPT (F) 0 - 90 US Galls/Minute

(0 - 341 Liters/Minute)

1/4”

(6mm)

536 ft

(136 Meters)

0.5 US Gallons
(1.9 liters)

MAX. WORKING PRESSURE AIR INLET TEMPERATURE LI MITS PUMP WEIGHTS :-

16 Bar (232 psi) 3/4” NPT (F) Determined by Elastomers AA :- 65.5 Kg SA :- 75 Kg



 Caution - Operating temperature limitations are as follows:



Materials
Buna-n - General purpose, oil resistant. Shows good solvent, oil, water and hydraulic fluid resistance. Should not

be used with highly polar solvents like acetone and MEK, ozone, chlorinated hydrocarbons and nitro hydrocarbons.

EPDM - Shows very good water and chemical resistance. Has poor resistance to oils and solvents, but is fair on

ketones and alcohols.

Neoprene - All purpose. Resistant to vegetable oil. Generally not affected by moderate chemicals, fats greases

and many oils and solvents. Generally attacked by strong oxidising acids, ketones, esters, nitro hydro carbons and
chlorinated aromatic hydrocarbons.

Santoprene® - Injection moulded thermoplastic elastomer with no fabric layer. Long mechanical flex life.

Excellent abrasion resistance.

Virgin PTFE - Chemically inert, virtually impervious. Very few chemicals are known to react chemically with

PTFE : molten alkali metals, turbulent liquid or gaseous fluorine and a few fluoro-chemicals such as chlorine
trifluoride or oxygen difluoride which readily liberate free fluorine at elevated temperatures.

Viton® - Shows good resistance to a wide range of oils and solvents : especially all alphatic, aromatic and

halogenated hydrocarbons, acids, animal and vegetable oils. Hot water or aqueous solutions(over 700F) will attack
Viton®.

Polypropylene - High strength, light weight, corrosion resistant polyolefin which easily withstands most

chemicals, with no known solvent at room temperature.

TYPICAL CODE = N2B. S A. W 3. N N S

SS :- ??? Kg

Operating Temperatures

Maximum Minimum Optimum

176oF

o

C

80

212oF

o

100
212oF

o

100
212oF

o

100
356oF

o

180
356oF

o

180
158oF

o

C

70

C

C

C

C

C

-18oF

o

-28

-11oF

o

-24

-4oF

o

-20

-10oF

o

-23
32oF

o

C

0
0oF

o

-18

-40oF

o

-40

C

C

C

C

C

C

50o to 140oF

o

to 60oC

10

50o to 212oF

o

to 100oC

10
50o to 130oF

o

10

to 54oC

50o to 212oF

o

to 100oC

10
50o to 212oF

o

to 100oC

10
75o to 212oF

o

to 100oC

24
50o to 140oF

o

to 60oC

10

MODEL - N50

WETTED COMPONENTS

A : ALUMINIUM
S : 316L STAINLESS STEEL

NON - WETTED COMPONENTS

A : ALUMINIUM
S : 316L STAINLESS STEEL

VALVE TYPE

B : BALL
W : WEIGHT E D BALL

This pump should be used in accordance with the requirements of the Health and Safety at Work Act 1974.

All business conducted subject to Blagdon Pump. Terms and Conditions of Sale, available on request.

VALVE SEATS

B : BUNA-N T : PTFE
E : EPDM V : VITON
N : NEOPRENE A : ALUMINIUM
S : STAINLESS STE EL

VALVE BALLS

B : BUNA-N T : PTFE
E : EPDM V : VITON
N : NEO PRENE
S : STAINLESS STE EL

DIAPHRAGMS

B : BUNA-N T : PTFE
E : EPDM V : VITON
H : POLYESTER (HYTREL)
N : NEO PRENE
P : POLYURETHANE
R : SANTOPRENE
O : ONE-PIECE PTFE

IMPORTANT

BLAGDON PUMP

BLAGDON PUMP

BLAGDON PUMPBLAGDON PUMP

HG-CF-1042 Rev. C - 03/28/03

A Unit of IDEX Corporation

6017 ENTERPRISE DRIVE, EXPORT,
PENNSYLVANIA 15632-8969, USA.
TEL. : [phone] FAX. : [phone]

Web Site : www.blagdonpump.com
E-Mail : [e-mail]

Page 2

PRINCIPLE OF PUMP

OPERATION

This ball type c heck valve p ump is powered b y
compressed air and is a 2:1 ratio design. The
inner side of one diaphragm chamber is alter­nately pressurised while simultaneously ex­hausting the other inner chamber. This causes
the diaphra gms, which a re connected b y a com­mon rod secured by plates to the centers of the
diaphragms, to move in a reciprocating action.
(As one diaphragm performs a discharge stroke
the other diaphragm is pulled to perform the
suction stroke in the opposite chamber.) Air
pressure is app lied over the entir e inner surface
of the diaphragm while liquid is discharged
from the opposite side of the diaphragm. The
diaphragm operates in a balanced condition
during the discharge stroke which allows the
pump to be operated at discharge heads of over
500 feet (152 meters) of water.

For maximum diaphragm life, keep the pump as
close to the liquid being pumped as possible.
Positive suction head in excess of 10 feet of
liquid (3.048 meters) may require a back pres­sure regulating device to maximize diaphragm
life.

Alternate pressurising and exhausting of the
diaphragm chamber is performed by an exter­nally mounted, pilot operated, 2 way type
distibuti on valve. When the spool sh ifts to one
end of the valve block body, inlet pressure is
applied to one chamber and the other diaphragm
chamber exha usts. When th e spool shift s to the
opposite end of the valve body, the pressure to
the chambers is reversed. This alternating move-

Installation Guide

Fig. 1

ment of the spool inside the valve body is con­trolled by a pilot air pressure signal held against
the diaphragm connecting rod, between seals in
the diaphragm shaft bushes. This signal is re­leased, triggering the movement of the spool,
when pilot holes in the diaphragm connecting
rod align with the held pilot signal, sending the
signal to exhaust, which in-turn causes a pres­sure imbalance around the spool, sending it to
the opposite en d of the valve b ody. This si muta­neously sends inlet pressure to the opposite
chamber.

The chambers are connected with manifolds
with a suction and discharge check valve for
each chamber, maintaining flow in one direction
through the pump. The 2:1 ratio discharge pres­sure is generated by simultaneously delivering
air inlet pressure to alternate sides of a central
air diaphragm, the chambers either side of this
central diaphragm are pressurised and exhausted
in conjunction wi th the main diaphragm cham­bers.

INSTALLATION

The typical installation shown in FIG. 1 is only a
guide to selecting and installing system
components. Your installation will depend on
the type of fluid being pumped and your
application needs. To reduce the risk of serious
bodily injury and damage to property, never use
fluids in this pump which are not compatible
with the wetted components. Contact your local
distributor or the manufacturer for system design
assistance & compatibility if necessary.

Mount the pump in an upri ght position. Failur e
to ensure an upright pos ition may result in loss

of or poor priming ch aracteristics. Ensure the
pump is securely moun ted to avoid movement
and possible risk of bodily injury.

PRESSURE The pump delivers double the
pressure at the discharge outlet as the air
pressure applied at the air inlet.

NOTE: Pressure Regulator (H) should be
installed where air supply could exceed 125
psi.

SAFETY

Your BLAGDON PUMP is a high
performance unit capable of achieving

high output s at high efficien cies. However, as
is common with pneumatic equipment, the
pump efficienc ies is reliant upon the air being
clean, dry and filtered. Failure to comply with
these requirements may lead to loss of
performance and reduced component life and in
extreme cases, permanent damage to the pump.

To avoid leaks, ensure that all fluid connections
are tight. The use of PTFE thread tape co rrectly
applied should be used to ensure 100%
leakproof connections. Failure to ensure

100% sealability of the suction connection
could adversely affect suction performance.

If you are pumping hazardous fluids, or
operating the pump in an enclosed area, it is
essential that the exhaust from the pump is
piped away to a safe location. When pumping
hazardous fluids the above instructions must be
adhered to in order to ensure safe operating
procedures. (Under certain operating
conditions the failure of internal components
can lead to the pumped fluid being exhausted
via the pump exh aust outlet).

WARNING

NEVER place your hands over or near the

pump suction inlet. Powerful suction could
cause serious bodily injury.

FLUSH THE PUMP This pump was tested
with water containing an oil-based rust
inhibitor. If thi s solution could c ontaminate or
react with the fluid you are pumping, flush the
pump thoroughly with a solvent/detergent to
clean internal components. The solvent/
detergent must be compatible with the pump
materials of con struct ion. Ca re shou ld b e taken
to flush the pump each time it is disassembled
for maintenance or repair.

CAUTION Ensure that only the
recommended grade of lubricating oil is used.
BLAGDON PUMPS require an SAE 10
lubricating oi l. Other grades of oil may ca use
the Air Logic Syst em to operate intermi ttently,
thereby causin g a loss of output and failure to
operate.
If the pump accelerates or is running too fast
due to a lack of fluid, then stop it immediately
by shutting off the air supp ly. A dry pump will
accelerate to a high speed causing wear to
elastomers.
If the fluid you are pumping tends to dry up or
set when it is no t moving, then flush th e pump
as often as necessary to prevent the fluid from
drying in the pump. Drain the pump thoroughly
before storing.
If feasible, invert pump to allow any fluid to
drain from the no n- r eturn valves

.

HG-CF-1042 Rev. C - 03/28/03

Page 3