HG-CF-1087 Rev. E – 15.02.10 PAGE 1
SERVICE & OPERATING MANUAL
AIR OPERATED DOUBLE DIAPHRAGM PUMP
B50 & X50
Full Flow
High Pressure Series
This pump is Atex approved for use
in potentially explosive atmospheres
Group II category 2
Table of Contents
Service / Maintenance Log, Recycling 2
Dimensions 3
Performance Curve 3
Technical Data & Temperature limitations 4
Explanation of Pump Nomenclature 4
Principle of Pump Operation 5
Installation guide 5
Important Warnings & Safety Information 6
Troubleshooting 7
Grounding the Pump (Atex) 7
Warranty 8
Service 8
Air Valve Overhaul 8
Wet-side Overhaul 8
Exhaust Safety 9
High Temperature Inst. 9
Parts List 10
Exploded Drawings (Wetside & Airside) 11
Elastomer Table / Technical Notes 12
Technical Notes 13
II 2 GD c
Declaration of Conformity 14
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Service / Maintenance Log
Date Details Completed
RECYCLING
Many components of BLAGDON air operated double diaphragm pumps are made of recyclable materials. We encourage pump
users to recycle worn out parts and pumps whenever possible, after any hazardous pumped fluids are thoroughly flushed.
Contact Information
Contact Phone / Fax No.
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HG-CF-1087 Rev. E – 15.02.10 PAGE 3
GA Drawing & Performance Curve
B50 / X50 General Assembly :- All dimensions +/- 3mm
B50 & X50 Full Flow 2:1 Pump Performance Curve, based on water at ambient temperature
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HG-CF-1087 Rev. E – 15.02.10 PAGE 4
TECHNICAL DATA
FLUID CONNECTIONS CAPACITY MAX SOLIDS MAX DISCHARGE HEAD DISPLACEMENT/STROKE
2” BSP (F) 0 - 341 Liters/Minute
(0 - 75 Gallons/Minute)
6 MM
(1/4”)
163 Meters
(536 ft)
1.9 Liters
(0.42 UK Gallons)
MAX. WORKING PRESSURE AIR INLET TEMPERATURE LIMITS PUMP WEIGHTS :-
16 Bar (232 psi) 3/4” BSP (F) Determined by Elastomers AA :- 51.5 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.
Polypropylene - High strength, light weight, corrosion resistant polyolefin which easily withstands most chemi-
cals, with no known solvent at room temperature.
TYPICAL CODE = B50. 02. A A. W 3. N N S
MODEL
B50 : STANDARD
X50 : ATEX CAT. 2
DESIGN LEVEL
B50. 05. AA. W 3. N N S
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
70
C
C
C
C
C
C
-18oF
o
-28
-11oF
o
-24
-4oF
o
-20
-10oF
o
-23
32oF
o
0
C
0oF
o
-18
-40oF
o
-40
C
C
C
C
C
C
VALVE SEATS
A : ALUMINIUM
S : STAINLESS STEEL
50o to 140oF
o
to 60oC
10
50o to 212oF
o
10
to 100oC
50o to 130oF
o
10
to 54oC
50o to 212oF
o
10
to 100oC
50o to 212oF
o
10
to 100oC
75o to 212oF
o
24
to 100oC
50o to 140oF
o
10
to 60oC
WETTED COMPONENTS
A : ALUMINIUM
NON - WETTED COMPONENTS
A : ALUMINIUM
VALVE TYPE
B : BALL
W : WEIGHTED BALL
MODEL DESIGNATION
3 : SERIES 3
This pump should be used in accordance with the requirements of the Safety, Health & Welfare at Work Act 2005.
All business conducted subject to IDEX Pump Technologies, Ireland. Terms and Conditions of Sale, available on request.
VALVE BALLS
B : BUNA-N T : PTFE
E : EPDM V : VITON
N : NEOPRENE
S : STAINLESS STEEL
DIAPHRAGMS
B : BUNA-N T : PTFE
E : EPDM V : VITON
H : POLYESTER (HYTREL)
N : NEOPRENE
P : POLYURETHANE
R : SANTOPRENE
O : ONE-PIECE PTFE
IMPORTANT
IDEX Pump Technologies (Ireland) Ltd.,
A Unit of IDEX Corporation,
R79, Shannon, Co Clare, IRELAND.
TEL. : +353 61 471933 FAX. : +353 61 475046
Web Site : www.blagdonpump.com
E-Mail : sales@blagdonpump.com
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HG-CF-1087 Rev. E – 15.02.10 PAGE 5
AIR
Exhaust
1
3
2
4
Flexible
Connection
Pipe Connection
(Style Optional)
Gauge
Shut-off
Valve
Drain Port
DISCHARGE
Pulsation
Dampener
Regulator/Lubricator
Air Shut-Off
Valve
Air Dryer
INLET
Air Inlet
Air Exhaust
Pipe Connection
(Style Optional)
Air
Gauge
Shut-off
Valve
Drain Port
SUCTION
Filter
Connection
Flexible
PRINCIPLE OF PUMP
OPERATION
This ball valve type diaphragm pump is
powered by 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 diaphragms, which are
connected by a common shaft secured by plates
to the centres 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 applied over
the entire 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
distribution valve. When the spool shifts to one
end of the valve block body, inlet pressure is
applied to one chamber and the other diaphragm
chamber exhausts. When the spool shifts to the
opposite end of the valve body, the pressure to
Available from
Blagdon Pump :-
1. Pulsation Dampener
2. Filter/Regulator
3. Lubricator
4. Air Dryer
Installation Guide
Fig. 1
the chambers is reversed. This alternating
movement of the spool inside the valve body is
controlled by a pilot air pressure signal held
against the diaphragm shaft, between seals in the
diaphragm shaft bushes. This signal is released,
triggering the movement of the spool, when pilot
holes in the diaphragm shaft 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 end of the valve
body. This simultaneously sends inlet pressure
to the opposite chamber.
The chambers are connected by manifolds with a
suction and discharge ball 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 with 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 upright position. Failure
to ensure an upright position may result in loss
CAUTION !
The air exhaust should be piped
to an area for safe disposition of
the product being pumped, in the
event of diaphragm failure.
of or poor priming characteristics. Ensure the
pump is securely mounted 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 outputs at high efficiencies. However, as
is common with pneumatic equipment, the
pump efficiencies 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 correctly
applied should be used to ensure 100% leak
proof 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 exhaust 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 this solution could contaminate 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 construction. Care should be taken
to flush the pump each time it is disassembled
for maintenance or repair.
CAUTION
All BLAGDON PUMPS are built lubricated with
grease during assembly and need no further
lubrication. If the use of oil cannot be avoided,
this will not present any problems. A light No. 2
class lithium grease is recommended. Other
grades may cause the Air Logic System to
operate intermittently, thereby causing a loss of
output and failure to operate. Other seals are
available for “clean room” conditions
If the pump accelerates or is running too fast
due to a lack of fluid, then stop it immediately
by shutting off the air supply. 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 not moving, then flush the 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 non-return valves
.
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Important Warnings and Safety Information
IMPORTANT
Read these safety warnings and instructions in this manual completely, before installation and start-up of the pump. It
is the responsibility of the purchaser to retain this manual for reference. This manual must be kept with, and supplied
with the pump at all times. Failure to comply with the recommendations stated in this manual will damage the pump,
and void factory warranty. These instructions are available if required, in the language or languages of the country or
countries in which the equipment is used. Please refer to the manufacturer for details.
IMPORTANT!
This pump is pressurized internally with air pressure during operation. Always make certain that all bolting is in good condi tion and that
all of the correct bolting is reinstalled during assembly. End-user must ensure correct fitting of Inlet / Outlet connections. Crossed
threads or over tightening of connections will result in leaks. Quick action/release connections are not recommended. If thei r use is
unavoidable, the levers must be locked to avoid them being forced apart in a hazardous manner.
WARNING!
Before maintenance or repair, shut off the compressed air line, bleed the pressure, and disconnect the air line from the pump . The discharge line may be pressurized and must be bled of its pressure. End-user must ensure correct regulation of air supply pressure, as any
increase in air pressure results in a similar increase in product pressure if stalled-out.
WARNING!
Before doing any maintenance on the pump, be certain all pressure is completely vented from the pump, suction, discharge, piping, and
all other openings and connections. Be certain the air supply is locked out or made non-operational, so that it cannot be started while
work is being done on the pump. Be certain that approved eye protection and protective clothing are worn at all times in the vicinity of
the pump. Failure to follow these recommendations may result in serious injury or death.
WARNING!
Airborne particles and loud noise hazards. Wear ear and eye protection.
WARNING!
Take action to prevent static sparking. Fire or explosion can result, especially when handling flammable liquids. The pump, piping,
valves, containers or other miscellaneous equipment must be grounded. Refer to exhaust safety instructions on page 9.
WARNING!
When used for toxic or aggressive fluids, the pump should always be flushed clean prior to disassembly. User must ensure chemical
compatibility, and any pressure / temperature limits are not exceeded. These instructions include all the information for rel evant
diaphragm temperature limits. Pump temperature range can also be found on data-plate attached to the pump.
If pump is not used for more than 5 days, care must be taken when restarting. If in any doubt, remove pump from line and flus h with a
suitable cleaner. Solidified deposits within the pump may cause damage to the diaphragms.
CAUTION!
Before pump operation, inspect all gasketed fasteners for looseness caused by gasket creep. Re-torque loose fasteners to prevent
leakage. Follow recommended torques stated in this manual. In cases of excess vibration, Blagdon recommend fitting a Pulsation
Dampener to remove effects of pulse actions from pump operation. Flexible connections can be used, but must be kept to a mini mum
length necessary to avoid sharp flexing or straining movements
.
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TROUBLE SHOOTING GUIDE
NOTE : - Check all solutions before dismantling the pump.
PROBLEM CAUSE SOLUTION
Pump will not start Air valve assembly malfunction/Siezure
Erratic ow Diaphragm failure on one side.
Pump strokes but will not
discharge
Fluid discharged from air
exhaust
Intermittent stroke rate Over lubrication
Obstructed uid line.
Obstructed diaphragm chamber.
Diaphragm failure causing uid & excessive air to be
expelled through the exhaust.
Diaphragm seal failure.
Air valve system malfunction.
Air connected to exhaust.
Valve ball not seating.
Suction leakage.
Diaphragm failure causing uid & excessive air to be
expelled through the exhaust.
Diaphragm seal failure.
Air valve system malfunction.
Excessive suction lift.
Suction line leakage.
Valve ball not seating correctly or damaged.
Suction line or strainer clogged.
Diaphragm failure.
Diaphragm Failure.
Loose frontplate.
Diaphragm shaft seal failure.
Air valve system malfunction.
Valve ball not seating / partially obstructed.
Check carrier for freedom of movement. Clean, oil & replace.
Clean line or increase line size.
Remove obstruction.
Replace diaphragm.
Replace shaft seals.
Check all seals in valve chest assembly.
Re -connect to air inlet.
Replace diaphragm.
Check and remove obstruction.
Check and correct.
Replace diaphragm.
Replace shaft seals.
Check all seals in valve chest assembly.
Shorten suction line.
Check and correct.
Check and remove obstruction / replace.
Clear.
Replace diaphragm.
Replace diaphragm.
Re -Torque to manual specications.
Shut -down pump. Remove air connection
into pump & introduce a small quantity of de greasing agent into air valve and replace
line. Run pump until clear.
Replace seals.
Check all seals in valve chest assembly.
Clear obstruction.
ATEX Certied units : - X5005SA..
These models are certied to : -
II 2 GD c
Non-electrical equipment for potentially explosive atmospheres,
: EN13463 -1 : 2001, ‘c’ - Internal control of production.
Grounding the pump : -
WARNING!
Take action to prevent static sparking. Fire or
explosion can result, especially when handling
ammable liquids. The pump, piping, valves,
containers or other miscellaneous equipment
must be grounded.
The Atex approved units are supplied with a natural earth ground
cable. This cable is 2 meters in length and permanently connected
through a nut and bolt at the inner cover casting. The other end is free
to connect to the nearest available suitable point to provide a natural
earth ground. This must be done to reduce the risk of electro -static
sparking.
Refer to table on page 10 for key to balloon references.
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HG-CF-1087 Rev. E – 15.02.10 PAGE 8
IMPORTANT!
Read these instructions
c o m p le t el y , b ef o r e
is the responsibility of the purchaser to
retain this manual for reference.
F a i l u re t o c o m p l y wi t h t he
rec om mendations stated i n this
manual will damage the pump, and
void factory warranty.
installation and start-up. It
SERVICE
The following sections give a general
overview on how to service all
models of BLAGDON Diaphragm
Pumps. For details on individual part
numbers, quantities, materials, etc.,
please consult the parts list supplied
with the pump.
NOTE : Before commencing
any service or maintenance work
on the pump, ensure that the air
supply has been disconnected or
isolated.
AIR VALVE SYSTEMS
PNEUMATIC TYPE Remove the 4
screws securing the valve block to
the valve chest, together with any
associated gaskets or seals.
Remove slide valve plate & slide
valve from the valve block assembly.
Clean all parts thoroughly and
inspect for excessive wear, replacing
where necessary.
The slide valve and valve plate
contact faces should be flat and free
from scratches. A light polishing on a
flat surface with a fine abrasive paper
will remove most scratches.
If excessive wear is suspected in the
valve block bore or valve carrier,
remove the valve block plugs and
withdraw the valve carrier. Check
valve block plug o-rings for wear or
attack & replace where required.
Clean the valve carrier & valve block
bore with white spirits to remove any
oil films.
NOTE : T h e n o m i n a l
diametrical clearance between the
valve carrier and the valve block
block bore should be 0.05 -
0.09mm. A clearance in excess of
this will cause the valve system to
run erratically.
Apply a light grease to the valve
bl ock plug O-ri ngs when reassembling into the valve block bore.
Any damage to the O-ring may cause
the valve system to malfunction.
Re - assem b l e t he valve b l o ck
assembly & re-torque in accordance
to the settings shown in the parts list.
In the event of a complete air-side
overhaul, the pump should be disassembled down to the centre
section assembly as described later
in the “Wet-Side Overhaul” section.
With the valve block assembly
dismantled, remove the inner covers
where appropriate.
A careful note of the position of all
related seals and gaskets should be
made to facilitate re-assembly.
Remove diaphragm shaft bushes,
where appropriate, and check all
seals and „O‟ rings for wear or
d a ma g e . I f w o rn , r ep l a ce
immediately.
NOTE:- The integrity of the
diaphragm shaft seals is essential
for the correct functioning of all
pneumatically actuated valve
systems.
Check the diaphragm shaft for
excessive wear as this will result in
premature seal failure. Replace as
required. Lubricate all components
and re-assemble as detailed above,
in reverse order. Ensure the correct
position of all components detailed in
all sectional assembly drawings.
WET-SIDE OVERHAUL
REPL A C I N G B AL L V A L VES
Remove discharge manifold from
pump assembl y togethe r with
associated valve balls, seats and „O‟
rings.
NOTE :- The orientation of the
valve seat relative to the valve ball
should be noted as incorrect
positioning may result in a
performance loss.
Turn pump through 180
the suction manifold. Clean and
inspect the components. Check for
any wear or damage and replace as
required.
NOTE :- Ball or valve seat wear
may result in loss of performance
and suction lift.
Re-assemble the valve balls/seats
and ensure manifolds are adequately
torqued to the settings shown in the
parts list.
o
and remove
R E PL A C I N G D I AP HR A G M S
Remove both suction and discharge
manifolds as detailed in the previous
section, removing all ball valves,
seats and „O‟ rings.
Loosen and remove both outer
covers from the pump assembly.
The orientation of the covers should
be noted so as to facilitate reassembly.
Holding one of the frontplates in a
vice, („soft jaws‟ should be fitted), or
with an adjustable spanner, loosen
and remove the frontplate from the
opposi te en d . Re m o v e th e
diaphragm, backplate and bumpstop
from diaphragm shaft.
Carefully withdraw the diaphragm
shaft from the centre section and
hold the free end in a vice, holding
between the flats machined on the
end. Loosen and remove the
frontplate and remove the diaphragm
toget h e r with b ackpla t e an d
bumpstop (where fitted).
NOTE :- Care should be taken with
all plastic, coated and hygienic
pumps, so that the surface of the
frontplate is not damaged.
Thoroughly clean all parts and check
for wear, damage, swelling, cracking,
delamination and chemical attack.
Replace components where required.
NOTE :- Rubber diaphragms
should be replaced if they are
worn to such an extent that the
fabric re-enforcing is evident on
the surface of the diaphragm.
Fo r p u m ps fitted with PTFE
diaphragms, a light coating of grease
should be applied to the back-up
diaphragm prior to re-assembly.
Before re-assembly, it is advisable to
check the condition of the diaphragm
shaft seal/‟O‟ rings for wear or attack.
If either is evident, it is recommended
that they be replaced.
Assemble the diaphragms onto the
shaft in a reverse sequence to their
removal. Care should be taken as to
the orientation of the diaphragm
relative to the front and back plates.
All diaphragms have “AIR SIDE”
molded onto one side. The backplate
must be fitted adjacent to the AIR
SIDE of the diaphragm.
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EXHAUST SAFETY WHEN PUMPING HAZARDOUS LIQUIDS
WARNING!
In the event of diaphragm rupture, pumped material may enter the air end of the pump, and be discharged into the atmosphere. If pumping
a product which is hazardous or toxic, the air exhaust must be piped to an appropriate area for safe disposition.
Flooded Suction Installation
Suction Lift Installation
Submerged Installation
Exhaust Safety : -
When a diaphragm fails during operation, pumped liquid can enter and contaminate the air side of the pump. If diaphragm failu re is not
severe, i.e. a small split or hole, then the pump can continue to run, with air being forced into the product being pumped. I f h owever the
failure is more serious, then the pump may stop, with uid or fumes being expelled through the exhaust. Under these conditio ns it is
recommended that the exhaust is piped away to a safe area. In
standard suction lift conditions this can simply be done by pip ing from the
exhaust connection to a safe area. Multiple installations can be piped to a common connection, then to a safe area. In oode d s uction
conditions the exhaust must be taken to a point higher than the uid level to prevent any siphoning away. In submerged condi tions ensure
exhaust is piped away above uid level.
In all conditions ensure exhaust outlet is not expelling across a non -conductive surface. The exhaust must not
be placed less th an 100mm
from any non -conductive surface, as this may generate a propagating brush discharge resulting in a possible ignition source.
HIGH TEMPERATURE INSTRUCTIONS
In situations where the temperature of the uid to be pumped is likely to exceed 100°C, a high temperature pump
code must be specied. This is signied using an ‘X’ in the last part of the pump code as shown.
“XTS” in place of “TTS”.
This indicates the following specication amendments : Certain seals and o -rings will be changed from Buna -N to Viton and back -up diaphragms and any bump -stops will
be changed to Viton.
See table below for parts eecte
These items are available in recommended spares kit : - ASK5005HT
REF. NO 7 13 35 37 38 39 40 41 43 44 45 46 51 28
DESCRIPTION BUMP
MATERIAL
O-RING O -RING DIAPHRAGM
STOP
d : - (refer to main table for quantities / pump)
HIGH TEMPERATURE SPECIFICATION
SHAFT
BUSH
LIP SEAL
(DIA.
SHAFT)
O-RING LIP SEAL
SPACER
BUSH
SPACER
BUSH
O-RING BUMP
STOP
VALVE
BLOCK
SEAL
PLATE
SEAL
O-RING SUPPORT
DIAPHRAGM
VITON - - - - - - - - 1B177 50-282 1B176 G329 1B003
PHOSPHOR BRONZE - - - - - -
- -
NOTE! For part numbers not shown please refer to manufacturer for spec.
HG -CF - 1087 Rev. E – 15.02.10 PAGE 9
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1
4
QTY
24
4
2
1
2
6
2
1
1
2
1
1
1
1
2
4
2
1
2
2
1
1
1
1
AIRSIDE ASSEMBLY PARTS
INNER COVER - LEFT HAND
50- 194
O-RING
SOCKET CAP SCREW M8 x 25
G270
G112 O-RING
PART N o. DESCRIPTION
32
33
30
31 D028
No.
REF
34 50-279 VALVE CHEST
DIAPHRAGM SHAFT SEAL
50- 206
50- 195 DIAPHRAGM SHAFT
37
38
36 50-196 DIAPHRAGM SHAFT BUSH
35 G167 O-RING
39 50-199 THRUST WASHER
40 50-197 BACKPLATE
GREASE NIPPLE
AIR DISTRIBUTION MANIFOLD
HEX. ADAPTOR
INNER COVER - AIR CHAMBER
50- 201
50- 205
50- 200 LOCK- NUT
41 50-210 DIAPHRAGM - AIR CHAMBER
42
44 50-291 INNER COVER - RIGHT HAND
43 AP50- 45
50- 204 AIR HOSE ASSEMBLY
45
46
47
48 1 B026
O-RING
G057
50- 207 DIAPHRAGM SHAFT SEAL
49
50- 202 SPACER
THE FOLLOWING PARTS ARE USED ON ATEX CERTIFIED MODELS (REF. PAGE 7)
These items are available in a recommended spares kit - SA104 98 - Air Side Kit.
These items are available in a recommended spares kit. Please refer to your local stockist / distributor for details.
50 50-203 SPACER BUSH
51
52
53 SA10528 GROUNDING LEAD ASSY.
54 SP467 ATEX I/D TAG
55 SP474 TIE-LOK TIE
-
-
1
2
1
4
4
16
QTY
16
WETSIDE ASSEMBLY PARTS
PART N o. DESCRIPTION
4
O-RING
SEE TABLE
1
2
1
1
SILENCER
BUMPSTOP
1B114
50- 198
2
2
1B021 BACKPLATE
2
4
4
DIAPHRAGM
1B001 DIAPHRAGM SUPPORT
FRONTPLATE
VALVE BLOCK
D028 SOCKET CAP SCREW M8 x 25
C 165 SPRING WASHER
50-342
2
1
VALVE CARRIER
1B124
O-RING
1C021 VALVE BLOCK PLUG
50-341
2
SOCKET CAP SCREW (NOT SHOWN) M5 X 14
0391
1
1
1
1
2
1
PORT SEAL
SLIDE VALVE
SLIDE VALVE PLATE
1B123
50- 248
VALVE BLOCK SEAL
OUTER COVER
50- 286 SUCTION MANIFOLD
50- 253
8
36
28
M10 x 40
B027 NUT - SERRATED M10
A063 BOLT
A496 BOLT M10 x 100
2 C013 WASHER M8
1 A041 BOLT M8 x 30
3 50 -287 DISCHARGE MANIFOLD
4 SEE TABLE VALVE BALL
No.
REF
HG -CF -1087 Rev. E – 15.02.10 PAGE 10
5 SEE TABLE VALVE SEAT
8 1B015 BUMPSTOP
9
7
6
10
11
12 SEE TABLE
13 SA10042
14
17
15
16 50 -246
18 G130
21 50 -251
19
20
22
25
24 50 -261
23
26
29
27
28
HG-CF-1087 rev.G 09.01.2011
b50ffaa_x50ffaa_manual-rev0911
WETSIDE EXPLODED ASSEMBLY
AIRSIDE EXPLODED ASSEMBLY
HG -CF - 1087 Rev. E – 15.02.10 PAGE 11
HG-CF-1087 rev.G 09.01.2011
b50ffaa_x50ffaa_manual-rev0911
HG-CF-1087 Rev. E – 15.02.10 PAGE 12
ELASTOMER TABLE
REF
DESCRIPTION BUNA-N NEOPRENE EPDM VITON PTFE QTY
No.
4 VALVE BALL 1B010 1B056 1B052 1B055 1B053 4
4 VALVE BALL (WTD) 1B079 1B027 1B080 1B088 - 4
6 O-RING G029 G149 G031 G119 G111 4
12 DIAPHRAGM 1B004 1B001 1B002 1B003 SEE 11 & 12 2
ELASTOMER TABLE - cont’d
ELASTOMER TABLE - cont’d
REF
REF
No.
12 DIAPHRAGM 1 B029 1B048 - - 2 50-221 50-233
DESCRIPTION POLY-
No.
5 VALVE SEAT - - - 50-293 50-292 4
5 VALVE SEAT - - 50-293 50-292 4 - -
4 VALVE BALL - - - 1B009 1B051 4
4 VALVE BALL - - 1B009 1B051 4 - -
12 DIAPHRAGM 1B029 1B048 50-233 - - 2
DESCRIPTION POLYESTER POLYURETHANE SANTOPRENE ALUMINIUM STAINLESS
ESTER
POLYURE-
THANE
PTFE
SANTOPRENE
ALUMINIUM STAINLESS
STEEL
QTY
STEEL
TECHNICAL NOTES :-
QTY ONE-PIECE
NOTES :-
Manifold (45)
Spacer (52)
Air Hose connections :-
When assembling Air Hoses (item 47) ensure that inlet &
outlet connections on Air Dist. Man. (item 45) and spacer
(item 52) are on same side of pump.
HG-CF-1087 rev.G 09.01.2011
b50ffaa_x50ffaa_manual-rev0911
HG-CF-1087 Rev. E – 15.02.10 PAGE 13
After first removing manifolds and air-hoses, remove both outer covers (26), followed by frontplates (13), diaphragms (12), backplates (10)
and bumpstops (8). Remove air-chamber assy, by removing nuts & bolts as at (27) & (28). This allows access to locknuts (42) to remove air
diaphragm, backplates & thrust washer (41), (40) & (39). Diaphragm Shaft can now be removed. Assembly is reverse of removal, applying a
small amount of Loctite grade 242 to locknuts prior to refitting air-chamber assy.
Removal of Diaphragm Shaft :-
TECHNICAL NOTES :-
HG-CF-1087 rev.G 09.01.2011
b50ffaa_x50ffaa_manual-rev0911
HG-CF-1087 Rev. E – 15.02.10 PAGE 14
IDEX Pump Technologies (Ireland) Ltd.,
A Unit of IDEX Corporation,
R79, Shannon, Co Clare,
IRELAND.
TEL. : +353 61 471933
FAX. : +353 61 475046
Web Site : www.blagdonpump.com
E-Mail : sales@blagdonpump.com
Date : December 01 2009
Des Monaghan,
Production & Technical Manager
HG-CF-223 (REV 6)
HG-CF-1087 rev.G 09.01.2011
b50ffaa_x50ffaa_manual-rev0911
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