SECTION CAUTIONS — READ FIRST! READ THESE WARNINGS AND SAFETY PRECAUTIONS PRIOR TO WARNING = Hazards or unsafe practices which INSTALLATION OR OPERATION. FAILURE TO COMPLY WITH THESE could result in severe personal injury, INSTRUCTIONS COULD RESULT IN PERSONAL INJURY AND OR death or substantial property damage PROPERTY DAMAGE.
SECTION PRINCIPLES OF OPERATION HOW AN AIR OPERATED DOUBLE DIAPHRAGM PUMP WORKS The air-valve directs pressurized air behind the diaphragm on the right, causing the diaphragm on the right to move outward (to the right). Since both the right diaphragm and the left diaphragm are connected via a diaphragm rod, when the right diaphragm moves to the right, the left diaphragm (through the action of the diaphragm rod) moves to the right also.
SECTION INSTALLATION, TROUBLESHOOTING AND MAINTENANCE INSTALLATION Ensure that the air supply is sufficient for the PIPING volume of air required by the pump. Refer to product specifications for further details. For reliable Whenever possible ensure the pump is installed using operation, install a 5 micron air filter, air-valve and the shortest possible pipe lengths with the minimum pressure regulator.
TROUBLESHOOTING PROBLEM EFFECT/SOLUTION Pump Will Not Cycle Discharge line closed or plugged Discharge filter blocked Check valve stuck Air filter blocked Air supply valve closed Air supply hooked up to muffler side of pump Compressor not producing air or turned off Muffler iced or blinded Diaphragm ruptured Air line in plant air supply lines ruptured...
OPERATION MAINTENANCE The Air-Operated Double Diaphragm Pump requires Due to the unique nature of each application, periodic a minimum of 20 psig of air to operate, with some inspection of the pump is the best method to determine variation according to diaphragm material. Increasing a proper maintenance schedule.
SECTION REPAIR AND ASSEMBLY PUMP WET END REMOVAL WARNING TOOLS NEEDED Prior to servicing the pump, ensure that the air and fluid lines are closed and disconnected. While wearing personal 1) Two Wrenches, 9/16 Inch protective equipment, flush, drain and process liquid from the pump 2) Two Wrenches, 1 Inch in a safe manner.
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STEP 7 STEP 8 STEP 9 In order to remove both “Outer Remove both “Outer Chambers” Using two 1 inch wrenches, Chambers” use two 9/16 inch from the “Intermediate.” remove “Outer Diaphragm Plate”, wrenches. Remove ten “Hex- “Diaphragm”, “Inner Diaphragm Head Cap Screws (3/8”-16x1- Plate”...
REPAIR AND ASSEMBLY AIR VALVE REMOVAL WARNING TOOLS NEEDED Prior to servicing the pump, ensure that the air and fluid lines are closed and disconnected. While wearing personal 1) One Wrench, 7/16 Inch protective equipment, flush, drain and process liquid from the pump 2) One Pick, General Purpose in a safe manner.
STEP 7 STEP 8 STEP 9 Remove the “Air Valve Spool” from Using the pick, remove the “Lip Using the pick, remove the the main “Air-Valve Assembly”. Seal (Air Valve)” from the main second “Lip Seal (Air Valve)” from “Air-Valve Assembly”. the main “Air-Valve Assembly”.
REPAIR AND ASSEMBLY PILOT VALVE REMOVAL WARNING TOOLS NEEDED Prior to servicing the pump, ensure that the air and fluid lines are closed and disconnected. While wearing personal 1) One Screwdriver, Phillips #2 protective equipment, flush, drain and process liquid from the pump 2) Two Wrenches, 3/4 Inch in a safe manner.
PILOT VALVE ASSEMBLY To assemble the pilot valve, reverse the order of disassembly. Should process fluid have contact with the pilot valve O-rings, they should be replaced as swelling may occur and cause irregular operation. During assembly, ensure that the open side of the lip-seals are facing outward. Lubrication of the pilot sleeve assembly, with a non-synthetic lubricant, is recommended in order to facilitate re-assembly into the intermediate.
PARTS LIST - THREADED ALUMINUM & STAINLESS STEEL FULL STROKE, A150-***-****-*** ITEM DESCRIPTION PUMP MODEL PART NO. MATERIAL DISCHARGE MANIFOLD - THREADED A150-N*A-****-*** 11332-20-NPT Aluminum A150-N*3-****-*** 11332-26-NPT Stainless Steel A150-B*A-****-*** 11332-20-BSPT Aluminum A150-B*3-****-*** 11332-26-BSPT Stainless Steel BALL A150-***-*V**-*** 11010-13 † A150-***-*E**-*** 11010-15 †...
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PARTS LIST - THREADED ALUMINUM & STAINLESS STEEL FULL STROKE, A150-***-****-*** ITEM DESCRIPTION PUMP MODEL PART NO. MATERIAL AIR VALVE BODY A150-*A*-****-*** 11618-20 ‡ Aluminum A150-*33-****-*** 11618-26 ‡ Stainless Steel AIR VALVE SPOOL All Models 10483-31 ‡ Acetal LIP SEAL (AIR VALVE) All Models 12003-76 ‡...
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PARTS LIST - THREADED ALUMINUM & STAINLESS STEEL PTFE SHORT STROKE, A150-***-T***-*** ITEM DESCRIPTION QTY PUMP MODEL PART NO. MATERIAL DISCHARGE MANIFOLD - THREADED A150-N*A-****-*** 11332-20-NPT Aluminum A150-N*3-****-*** 11332-26-NPT Stainless Steel A150-B*A-****-*** 11332-20-BSPT Aluminum A150-B*3-****-*** 11332-26-BSPT Stainless Steel BALL A150-***-*V**-*** 11010-13 †...
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PARTS LIST - THREADED ALUMINUM & STAINLESS STEEL PTFE SHORT STROKE, A150-***-T***-*** ITEM DESCRIPTION PUMP MODEL PART NO. MATERIAL LIP SEAL (AIR VALVE) All Models 12003-76 ‡ Nitrile O-RING (AIR VALVE END PLUG) All Models 11913-11 ‡ Nitrile AIR VALVE END PLUG A150-*A*-****-*** 11706-20 ‡...
FLANGED STAINLESS STEEL FULL STROKE A150-F*3-****-*** ALF-12060-E-02 All-Flo...
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PARTS LIST - FLANGED STAINLESS STEEL FULL STROKE A150-F*3-****-*** ITEM DESCRIPTION QTY PUMP MODEL PART NO. MATERIAL DISCHARGE MANIFOLD - FLANGED A150-F*3-****-*** 11336-26 Stainless Steel BALL A150-***-*V**-*** 11010-13 † A150-***-*E**-*** 11010-15 † EPDM A150-***-*G**-*** 11010-19 † Geolast ® A150-***-*N**-*** 11010-21 † Buna-N A150-***-*S**-*** 11010-23 †...
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PARTS LIST - FLANGED STAINLESS STEEL FULL STROKE A150-F*3-****-*** ITEM DESCRIPTION PUMP MODEL PART NO. MATERIAL LIP SEAL (AIR VALVE) All Models 12003-76 ‡ Nitrile O-RING (AIR VALVE END PLUG) All Models 11913-11 ‡ Nitrile AIR VALVE END PLUG A150-*A*-****-*** 11706-20 ‡...
FLANGED STAINLESS STEEL PTFE SHORT STROKE A150-F*3-T***-*** ALF-12060-E-02 All-Flo...
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PARTS LIST - FLANGED STAINLESS STEEL SHORT STROKE A150-F*3-T***-*** ITEM DESCRIPTION QTY PUMP MODEL PART NO. MATERIAL DISCHARGE MANIFOLD - FLANGED A150-F*3-****-*** 11336-26 Stainless Steel BALL A150-***-*V**-*** 11010-13 † A150-***-*E**-*** 11010-15 † EPDM A150-***-*G**-*** 11010-19 † Geolast ® A150-***-*N**-*** 11010-21 † Buna-N A150-***-*S**-*** 11010-23 †...
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PARTS LIST - FLANGED STAINLESS STEEL SHORT STROKE A150-F*3-T***-*** ITEM DESCRIPTION PUMP MODEL PART NO. MATERIAL INNER CHAMBER GASKET All Models 12123-19 Nitrile SCREW, SELF-LOCKING PHILLIPS All Models 12571-26 Stainless Steel (#6-32 X 3/8”) SCREW, HEX HEAD CAP (1/4”-20 X 3”) A150-**3-****-*0* 12516-26 Stainless Steel...
SECTION ELASTOMERS WETTED ELASTOMERS BUNA-N (NITRILE) GEOLAST® is a general purpose elastomer used with water and is an injection molded thermoplastic material with many oils. Temperature range 10°F to 180°F (-12°C characteristics similar to Nitrile. Has excellent to 82°C). abrasion resistance. Temperature range 10°F to 180°F (-12°C to 82°C).
SECTION WARRANTY AND REGISTRATION WARRANTY. All All-Flo products shall be covered by the standard All-Flo Limited Warranty in effect at the time of shipment. This warranty (which may be modified by All-Flo at any time) provides: MATERIALS SOLD ARE WARRANTED TO THE ORIGINAL USER AGAINST DEFECTS IN WORKMANSHIP OR MATERIALS UNDER NORMAL USE (RENTAL USE EXCLUDED) FOR FIVE YEARS AFTER PURCHASE DATE.
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22069 Van Buren Street Grand Terrace, CA 92313-5651 USA P: +1 (440) 354-1700 F: +1 (440) 354-9466 all-flo.com All-Flo is committed to the pursuit of designing and manufacturing the highest quality product available to industry. Since the beginning in 1986, All-Flo engineers have used their extensive knowledge of today’s engineered materials, advanced air system logic and manufacturing techniques to develop the superior group of lube-free, air-operated diaphragm pumps found in this catalog.
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