SERVICE & OPERATING MANUAL
Original Instructions
Model B75 Non-Metallic Design Level 2
Engineering Data and Temperature Limitations ................................................................................. 3
Explanation of Pump Nomenclature ................................................................................................... 4
Performance Curve, Model B75 Non-Metallic Design Level 2 ........................................................... 5
Dimensions: B75 Non-Metallic ........................................................................................................... 6
Metric Dimensions: B75 Non-Metallic................................................................................................. 7
Dimensions: B75 Non-Metallic with Spill Prevention .......................................................................... 8
Metric Dimensions: B75 Non-Metallic with Spill Prevention ............................................................... 9
Principle of Pump Operation............................................................................................................. 10
Installation and Start-up.....................................................................................................................11
Safety Information ............................................................................................................................ 12
Material Codes ................................................................................................................................. 12
Troubleshooting ................................................................................................................................ 13
Composite Repair Parts Drawing ..................................................................................................... 14
Composite Repair Parts List ............................................................................................................. 15
Spill Prevention Option for Virgin PTFE Equipped Pumps ............................................................... 16
Spill Prevention Repair Parts List ..................................................................................................... 16
Spill Prevention Concept .................................................................................................................. 17
Spill Prevention Option Diaphragm Servicing................................................................................... 17
Filling Chambers with Liquid............................................................................................................. 17
Spill Prevention Option with TPE Diaphragm ................................................................................... 18
Spill Prevention Concept with TPE Diaphragms .............................................................................. 19
Air Distribution Valve Assembly Drawing .......................................................................................... 20
Main Air Valve Assembly Parts List .................................................................................................. 20
Air Distribution Valve Servicing ......................................................................................................... 21
Air Distribution Valve with Stroke drawing & parts list ...................................................................... 22
Air Distribution Valve with Stroke Indicator Servicing ....................................................................... 23
Soleniod Shifted Air Valve Drawing .................................................................................................. 24
Soleniod Shifted Air Valve Parts List ................................................................................................ 24
Soleniod Shifted Air Distribution Valve Option .................................................................................. 25
Pilot Valve Assembly Drawing .......................................................................................................... 26
Pilot Valve Assembly Parts List ........................................................................................................ 26
Pilot Valve Servicing ......................................................................................................................... 27
Diaphragm Service Drawing, Non-Overlay....................................................................................... 28
Diaphragm Service Drawing, with Overlay ....................................................................................... 28
Diaphragm Servicing ........................................................................................................................ 29
Overlay Diaphragm Service.............................................................................................................. 29
Pumping Hazardous Liquids............................................................................................................. 30
Converting the pump for piping the exhaust air ................................................................................ 30
Exhaust Conversion Drawing ........................................................................................................... 30
Converted Exhaust Illustration.......................................................................................................... 30
Modular Check Valve Servicing ........................................................................................................ 31
Modular Check Valve Drawing ......................................................................................................... 31
Dual Port Option Drawing ................................................................................................................. 32
Dual Porting Options ........................................................................................................................ 33
Leak Detection Options Drawing ...................................................................................................... 34
Pulse Output Kit Drawing ................................................................................................................. 35
EC Declaration of Conformity - Machinery ....................................................................................... 36
s30nmdl2sm-rev0312
IDEX Pump Technologies (Ireland) Ltd., • A Unit of IDEX Corporation, R79, Shannon, Co Clare, IRELAND.
• TEL: +353 61 471933 FAX: +353 61 475046www.blagdonpump.com • e-Mail: sales@blagdonpump.com
B75 Non-Metallic
Design Level 2
Ball Valve
Air-Powered
Double-Diaphragm Pump
ENGINEERING, PERFORMANCE
& CONSTRUCTION DATA
INTAKE/DISCHARGE PIPE SIZE
3" ANSI Flange or
80mm DIN Flange
CAPACITY
0 to 238 US gallons per minute
(0 to 901 liters per minute)
AIR VALVE
No-lube, no-stall
design
SOLIDS-HANDLING
Up to .71 in. (18mm)
HEADS UP TO
100 psi or 231 ft. of water
(7 bar or 70 meters)
DISPLACEMENT/STROKE
.9 US gallon / 3.41 liter
Operating temperature limitations are as follows:
Operating Temperatures
Materials Maximum Minimum
Santoprene® Injection molded thermoplastic elastomer with no fabric layer. Long mechanical ex life. Excellent abrasion 212°F -10°F
resistance. 100°C -23°C
Virgin PTFE Chemically inert, virtually impervious. Very few chemicals are known to react chemically with PTFE: molten alkali metals, turbulent
liquid or gaseous uorine and a few uoro-chemicals such as chlorine triuoride or oxygen diuoride which readily liberate free uorine at 212°F -35°F
elevated temperatures. 100°C -37°C
Polypropylene 180°F 32°F
82°C 0°C
PVDF
Maximum and Minimum Temperatures are the limits for which these
materials can be operated. Temperatures coupled with pressure affect the
longevity of diaphragm pump components. Maximum life should not be
expected at the extreme limits of the temperature ranges.
200°F
93°C
10°F
-13°C
Nonmetallic pumps and plastic components are not UV stabilized. Ultraviolet radiation can damage these parts and negatively affect material properties.
Do not expose to UV light for extended periods of time.
For specic applications, always consult “Chemical Resistance Chart” Technical Bulletin
s30nmdl2sm-rev0312 Model B75 Non-Metallic Design Level 2 Page 3
TYPICAL CODE= B75 02. K T. B B. R R K LF
Model - B75
Design Level
Wetted Components
K: PVDF
P: Polypropylene
Lube Free
Valve Seats
K: PVDF
P: Polypropylene
Non-Wetted Components
T: Aluminum with
Epoxy Coating
Check Valve Type
B: Ball
Suction Orientation
B: Bottom
s30nmdl2sm-rev0312 Model B75 Non-Metallic Design Level 2 Page 4
Check Valves
R: Santoprene
T: PTFE
Diaphragms
R: Santoprene
T: PTFE / Santoprene Backup
Performance Curve, Model B75 Non-Metallic
Design Level 2
BAR
100
7
90
6
80
5
70
60
4
50
HEAD
3
40
30
2
20
1
10
0
20
(34)
PSI
40
(68)
100 PSI
80 PSI (5.44 Bar)
60 PSI (4.08 Bar)
40 PSI (2.72 Bar)
20 PSI (1.36 Bar)
(6.8 Bar)
60
(102)
80
Air Inlet Pressure
(136)
MODEL S30 Non-Metallic Performance Curve
Performance based on water at ambient temperature.
100
(170)
120
(204)
140
(238)
0
0 20 40 60 80 100 120 140 160 180 200 220
U.S. Gallons per minute
FEET
30
25
20
15
10
5
NPSHR
METERS
9.1
7.6
6
4.5
3
1.5
85075065055045035025015050
Liters per minute
CAPACITY
s30nmdl2sm-rev0312 Model B75 Non-Metallic Design Level 2 Page 5
Dimensions: B75 Non-Metallic
Dimensions in Inches
Dimensional tolerance: ±1/8"
Note: Dimensions "A" is from
the vertical centerline to the end
of the muffler.
Dimension
Standard Pump
Pulse Output Kit
3M Muffler
Mesh Muffler
Note: Porting Flanges are also available with
PN10 80mm DIN bolting configuration.
s30nmdl2sm-rev0312 Model B75 Non-Metallic Design Level 2 Page 6
A
6 9/16"
12 9/16"
13 3/4"
12 9/16"
Metric Dimensions: B75 Non-Metallic
Dimensions in Millimeters
Dimensional tolerance: ±3mm
Note: Dimensions "A" is from
the vertical centerline to the end
of the muffler.
Dimension
Standard Pump
Pulse Output Kit
3M Muffler
Mesh Muffler
Note: Porting Flanges are also available with
PN10 80mm DIN bolting configuration.
s30nmdl2sm-rev0312 Model B75 Non-Metallic Design Level 2 Page 7
A
167mm
202mm
349mm
225mm
Dimensions: B75 Non-Metallic
with Spill Prevention
Dimensions in Inches
Dimensional tolerance: ±1/8"
Dimension
Standard Pump
Pulse Output Kit
3M Muffler
Mesh Muffler
Note: Porting Flanges are also available with
PN10 40mm DIN bolting configuration.
s30nmdl2sm-rev0312 Model B75 Non-Metallic Design Level 2 Page 8
A
6 9/16"
7 15/16"
13 3/4"
8 13/16"
B
12 11/16"
14 1/16"
22 9/32"
14 15/16"
Metric Dimensions: B75 Non-Metallic
with Spill Prevention
Dimensions in Millimeters
Dimensional tolerance: ±3mm
Dimension
Standard Pump
3M
Mesh
Note: Porting Flanges are also available with
PN10 80mm DIN bolting configuration.
s30nmdl2sm-rev0312 Model B75 Non-Metallic Design Level 2 Page 9
A B
167mm
202mmPulse Output Kit
349mm 579mm
225mm
322mm
357mm
380mm
PRINCIPLE OF PUMP OPERATION
This ball type check valve pump is
powered by compressed air and is a 1:1
ratio design. The inner side of one
diaphragm chamber is alternately
pressurized while simultane ously
exhausting the other inner chamber. This
causes the diaphragms, which are
connected by a common rod secured
by plate s to the ce nte rs of the
diaphragms, to move in a reciprocating
action. (As one diaphragm performs the
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 over
200 feet (61 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
regul ati ng device to max imi ze
diaphragm life.
Alter nat e p res surizing and
exhausting of the diaphragm chamber
is performed by an externally mounted,
pilot operated, four way spool type air
distribution valve. When the spool shifts
to one end of the valve body, inlet
pressure is applied to one diaphragm
chamber and the other diaphragm
chamber exhausts. When the spool
shifts to the opposite end of the valve
body, the pressure to the chambers is
reversed. The air distribution valve spool
is moved by a internal pilot valve which
alternately pressurizes one end of the
air dis tribution val ve sp ool while
exhausting the other end. The pilot valve
is shifted at each end of the diaphragm
stroke when a actuator plunger is
contacted by the diaphragm plate. This
actuator plunger then pushes the end of
the pilot valve spool into position to
activate the air distribution valve.
The chambers are connected with
manifolds with a suction and discharge
check valve for each chamber,
maintaining flow in one direction through
the pump.
INSTALLATION AND START-UP
Locate the pump as close to the
product being pumped as possible. Keep
the suction line length and number of
fittings to a minimum. Do not reduce the
suction line diameter.
For installations of rigid piping, short
sections of flexible hose should be
installed between the pump and the
piping. The f lexi ble hose reduces
vibration and strain to the pumping
syste m. A su rge suppressor is
recom men ded to f urth er reduce
pulsation in flow.
AIR SUPPLY
Air supply pressure cannot exceed
100 psi (7 bar). Connect the pump air
inlet to an air supply of sufficient
capacity and pressure required for
desired perfor mance. When the air
supply line is solid piping, use a short
length of flexible hose not less than ½"
(13mm) in diameter between the pump
and the piping to reduce strain to the
piping. The weight of the air supply line,
regulators and filters must be supported
by some means other than the air inlet
cap. Failure to provide support for the
piping may result in damage to the
pump. A pressure regulating valve
should be installed to insure air supply
pressure does not exceed recommended
limits.
AIR VALVE LUBRICATION
The air distribution valve and the pilot
valve are designed to operate WITHOUT
lubrication. This is the preferred mode
of operation. There may be instances of
personal preference or poor quality air
suppl ies whe n lubricatio n of the
compressed air supply is required. The
pump air system will operate with
properly lubricated compressed air
supply. Proper lubrication requires the
use of an air line lubricator set to
deliv er one drop of S AE 10
non-detergent oil for every 20 SCFM
(9.4 liters/sec.) of air the pump
consumes at the point of operation.
Consu lt the pump ’s publ ish ed
Performance Curve to determine this.
AIR LINE MOISTURE
Water in the compressed air supply
can create problems such as icing or
freezing of the exhaust air, causing the
pump to cycle er raticall y or stop
operating. Water in the air supply can be
reduced by using a point-of-use air dryer
to supplement the user’s air drying
equipment. This device removes water
from the compressed air supply and
alleviates the icing or freezing problems.
AIR INLET AND PRIMING
To start the pump, open the air valve
approximately ½ to ¾ turn. After the
pump primes, the air valve can be
opened to increase air flow as desired.
If opening the valve increases cycling
rate, but does not increase the rate of
flow, cavitation has occurred. The valve
should be closed slightly to obtain the
most efficient air flow to pump flow ratio.
BETWEEN USES
When the pump is used for materials
that tend to settle out or solidify when
not in motion, the pump should be flushed
after each use to prevent damage.
(Product remaining in the pump between
uses could dry out or settle out. This could
cause problems with the diaphragms and
check valves at restart.) In freezing
tempe rat ure s the pump must b e
completely drained between uses in all
cases.
s30nmdl2sm-rev0312 Model B75 Non-Metallic Design Level 2 Page 10
INSTALLATION GUIDE
Top Discharge Ball Valve Unit
Available from
Blagdon Pump
1
Pulsation Dampener
Filter/Regulator
2
3
Lubricator
4
Air Dryer
Pulsation
Dampener
Limited to
125 psi
CAUTION
The air exhaust should be
piped to an area for safe
disposition of the product
being pumped, in the event
of a diaphragm failure.
1
4
3
2
s30nmdl2sm-rev0312 Model B75 Non-Metallic Design Level 2 Page 11
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