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DATA SHEET, SERVICE & OPERATING MANUAL
B75
Air Operated
Double Diaphragm Pump
Aluminium, Cast Iron & Stainless
Steel Series
Table of Contents
Performance Curve ............................................................................................... 1
Dimensions ........................................................................................................... 1
Engineering Data and Temperature Limitations .................................................. 2
Explanation of Pump Nomenclature .................................................................... 2
Principle of Pump Operation ................................................................................ 3
Installation Guide .................................................................................................. 3
Troubleshooting .................................................................................................... 4
Warranty ............................................................................................................... 4
Recycling .............................................................................................................. 4
Important Safety Information ................................................................................ 4
Material Codes ..................................................................................................... 5
Composite Repair Parts Drawing ........................................................................ 6
Available Service and Conversion Kits ................................................................ 6
Composite Repair Parts List ................................................................................ 6
Air Distribution Valve Assembly Drawing and Parts List ...................................... 7
Air Distribution Valve Servicing ............................................................................ 7
Pilot Valve Assembly Drawing and Parts List ....................................................... 8
Pilot Valve Servicing ............................................................................................. 8
Diaphragm Service Drawing, with Overlay .......................................................... 9
Diaphragm Service Drawing, Non-Overlay ......................................................... 9
Diaphragm Servicing ............................................................................................ 9
Overlay Diaphragm Servicing .............................................................................. 9
Check Valve Servicing ........................................................................................ 10
Check Valve Drawing ......................................................................................... 10
Pumping Hazardous Liquids .............................................................................. 10
Converting Pump for Piping Exhaust Air ............................................................ 10
Converted Exhaust Illustration ........................................................................... 10
520-319-000 Air Operated Double Diaphragm Pump
11/01
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Summary of Contents for Blagdon Pump B75
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Page 1: Table Of Contents
DATA SHEET, SERVICE & OPERATING MANUAL Air Operated Double Diaphragm Pump Aluminium, Cast Iron & Stainless Steel Series Table of Contents Performance Curve ....................1 Dimensions ......................1 Engineering Data and Temperature Limitations ..........2 Explanation of Pump Nomenclature ..............2 Principle of Pump Operation ................ -
Page 3: Dimensions
This pump should be used in accordance with the requirements of the DISTRIBUTOR Health and Safety at Work Act 1974. All business conducted subject to Blagdon Pump. Terms and Conditions of Sale available on request. BLAGDON PUMP Lambert Road, Armstrong, Washington, Tyne &... -
Page 4: Engineering Data And Temperature Limitations
® °F °F Polypropylene 65°C -40°C TYPICAL CODE = B75. 01. B. B B B VALVE SEATS MODEL - B75 A: Aluminium C: Carbon Steel DESIGN LEVEL S: Stainless Steel N: Neoprene B: Buna-N WETTED COMPONENTS E: EPDM A: Aluminium V: Viton ®... -
Page 5: Performance Curve
INSTALLATION GUIDE Top Discharge Ball Unit Available from Pulsation Blagdon Pump Dampener Limited to PD75M Pulsation Dampener 125 psi 020-052-000 Filter/Regulator 020-052-001 Lubricator... -
Page 6: Troubleshooting
TROUBLESHOOTING Corrective Action: Meet or exceed pump to the Diaphragm Replacement section of Refer to the pump SERVICE MANUAL Possible Symptoms: connection recommendations shown on your pump SERVICE MANUAL. for disassembly instructions. • Pump will not cycle. the DIMENSIONAL DRAWING. •... -
Page 7: Material Codes
MATERIAL CODES The Last 3 Digits of Part Number 332 ..Aluminium, Electroless Nickel Plated 552 ..Unfilled Polypropylene 000 ..Assembly, sub-assembly; 333 ..Carbon Steel, Electroless 553 ..Unfilled Polypropylene and some purchased items Nickel Plated 555 ..Polyvinyl Chloride 010 .. -
Page 8: Composite Repair Parts Drawing
Composite Repair Parts Drawing AVAILABLE SERVICE AND CONVERSION KITS B476-169-000 AIR END KIT Seals, O-ring, Gaskets, Retaining Rings, Air Valve Sleeve and Spool Set, and Pilot Valve Assembly B476-185-360 WET END KIT Buna Diaphragms, Balls, and Seats. B476-185-656 WET END KIT Santoprene Diaphragms and Balls, EPDM Seats. -
Page 9: Air Distribution Valve Assembly Drawing And Parts List
Air Valve Assembly Drawing, Parts List AIR VALVE ASSEMBLY PARTS LIST ITEM PART NUMBER DESCRIPTION B031-141-000 Air Valve Assembly B031-139-000 Sleeve and Spool Set B095-094-551 Body, Air Valve B132-029-552 Bumper B165-115-552 Cap, End B560-020-360 O-Ring B675-044-115 Ring, Retaining AIR DISTRIBUTION VALVE Remove the spool (part of item damage the spool during installa- IMPORTANT! -
Page 10: Pilot Valve Assembly Drawing And Parts List
Pilot Valve Assembly Drawing PILOT VALVE ASSEMBLY PARTS LIST ITEM PART NUMBER DESCRIPTION B095-096-000 Pilot Valve Assembly B095-095-551 Body, Pilot Valve B135-037-506 Bushing B675-057-115 Ring, Retaining B770-065-175 Spacer B775-041-506 Spool, Pilot B917-003-374 Wiper PILOT VALVE SERVICING Step #3: Re-assembly of the Replace the o-rings if necessary. -
Page 11: Diaphragm Service Drawing, With Overlay
Diaphragm Service Drawing, Diaphragm Service Drawing, with Overlay Non-Overlay DIAPHRAGM SERVICING anti-clockwise. is installed over the diaphragm rod. The pump is now ready to be Insert a 1/4-20 capscrew or set Thread the stud of the one re-installed, connected and re- To service the diaphragms first screw into the smaller tapped hole diaphragm assembly clockwise... -
Page 12: Check Valve Servicing
CHECK VALVE SERVICING The pump can now be reas- Check Valve Drawing sembled, reconnected and returned Before servicing the check valve to operation. components, first shut off the suction line and then the discharge METALLIC SEATS line to the pump. Next, shut off the compressed air supply, bleed air Two o-rings (or seals) (item 28) pressure from the pump, and dis-...
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