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  • Port Size: • 2” NPT (Internal) • 2” BSP (Tapered) • 2” ANSI • 2” DIN Flange
  • Capacity: 0 to 150 gpm (567 lpm)
  • Solids-Handling: Up to 1.8" (46 mm)
  • Heads Up To: 100 psi or 231 ft. of water (7 bar or 70 meters)
  • Displacement/Stroke: .50 gallons (1.9 liters)
  • Max Operating Pressure: 100 psi (7 bar)

The Heavy Duty Non-Metallic Flap Valve Air Operated Diaphragm Pumps from Sandpiper® are robust, yet lightweight. They are easy to maintain with flap valve chambers that can be removed for inspection and cleaning without removing the manifolds and the ESADS+Plus (Externally Serviceable Air Distribution System).


The flaps have positive pressure so that the pump can work in almost any position and handle solids laden fluids. The lightweight and durable design makes them ideal for mine and construction applications.



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SANDPIPER Heavy Duty Flap Valve HD20F pump

Sandpiper® HD20F1PBSPNS000. Heavy Duty, Non-Metallic Flap Valve Pump
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SANDPIPER Heavy Duty Flap Valve HD20F pump

Sandpiper® HD20F1PNSPNS000. Heavy Duty, Non-Metallic Flap Valve Pump
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SANDPIPER Heavy Duty Flap Valve HD20F pump

Sandpiper® HD20F1PJSPNS000. Heavy Duty, Non-Metallic Flap Valve Pump
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SANDPIPER Heavy Duty Flap Valve HD20F pump

Sandpiper® HD20F1PESPNS000. Heavy Duty, Non-Metallic Flap Valve Pump
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SANDPIPER Heavy Duty Flap Valve HD20F pump

Sandpiper® HD20F1PHSPNS000. Heavy Duty, Non-Metallic Flap Valve Pump
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Max. Flow Rate N/A 150 gpm567 lpm
Porting Position N/A 2" NPT
Pump Style N/A
Solids Handling N/A 2 "
Displacement per Stroke N/A 0.5 gal1.9 lit
WETTED M.O.C. N/A Polypropylene
Non-Wetted Material N/A Polypropylene
Elastomers N/A Buna N/A Neoprene N/A Santoprene N/A EPDM N/A EPDM with PTFE
Check Valve N/A Buna N/A Neoprene N/A Santoprene N/A EPDM N/A EPDM with PTFE
Length N/A 30 in754.38 mm
Width N/A 13 in321.31 mm
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