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S20 Non-Metallic 2″ (50mm) AODD – Ball Valve Pump

The Sandpiper S20 non-metallic air-operated double-diaphragm (AODD) pump’s time-tested, rugged design exclusively features three-piece bolted manifolds that enable reorientation of the porting connections to suit the unique needs of your process.

This pump is ideal for chemical transfer, bulk transfer and a wide variety of process applications.

S20 Key Features:
Available in corrosion-resistant polypropylene or PVDF
Available with Sandpiper’s one-piece Synthesis™ PTFE diaphragm
ESADS+ air distribution system: the only pump in its class with an externally serviceable air distribution system (see below)
Bolted construction with stainless steel fasteners




  1. Serviceability: The air distribution system (ADS) is one of the most frequently serviced parts of any AODD pump. Only Sandpiper’s ESADS+ feature allows access to the complete ADS without removing the pump from service. Repair or clean in five minutes (versus 55 minutes for competitors).
  2. Simplicity: Sandpiper’s original ADS is fully interchangeable, repairable and inline-serviceable. Other manufacturers frequently change ADS designs, creating issues with interchangeability, obsolete inventory and increased cost of ownership.
  3. Suction/Discharge Port Size:
    • 2″ Universal Flange
    • (Fits ANSI & DIN Flange)
  4. Capacity: 0 to 605 litres/minute
  5. Air Distribution Valve: No-lube, no-stall design
  6. Solids Handling: Up to 17 mm
  7. Heads up to: 7 bar or 70 meters of water
  8. Displacement/Stroke: 1.73 liter
  9. Maximum Operating Pressure: 100 psi (7 bar)
  10. Weight:
    • Polypropylene – 43 kg
    • PVDF – 59 kg
    • Conductive Polypropylene – 45 kg

Various non-metallic materials:

  1. Nitrile
  2. Teflon
  3. EPDM
  4. Neoprene
  5. Santoprene
  6. Viton
  7. Hytrle

Additional information



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