Air-powered diaphragm pump delivers discharge pressure, up to 250 psi maximum, equal to twice the inlet air pressure (2:1 ratio). The pump is designed for filter press feed or similar applications where higher discharge pressures are required. Some types are available with flap check valves for greater solids-handling capability. See Model SH2-M Data Sheet for specifics.

• Port Size: 2" NPT
• Capacity: 0 to 62 gpm (235 lpm)
• Air Distribution Valve: No-lube, no-stall design
• Solids-Handling: Up to 1/4" (6.3 mm)
• Heads Up To: 250 psi or 577 ft. of water (17 bar or 176 meters)
• Displacement/Stroke: 62 gallons (235 liters)
• Max Operating Pressure: 250 psi (17 bar)
• Shipping Weight: Cast Iron: 172 lbs. (78 kg.), 316 Stainless Steel: 176 lbs. (80 kg.)

Air-powered diaphragm pump delivers discharge pressure, up to 250 psi maximum, equal to twice the inlet air pressure (2:1 ratio). Designed for filter press feed or similar applications where higher discharge pressures are required.

• Port Size: 2" NPT
• Capacity: 0 to 62 gpm (235 lpm)
• Air Distribution Valve: No-lube, no-stall design
• Solids-Handling: Up to 2" (50 mm)
• Heads Up To: 250 psi or 577 ft. of water (17 bar or 176 meters)
• Displacement/Stroke: .3 gallons (1.1 liters)
• Max Operating Pressure: 125 psi (8.6 bar)
• Shipping Weight: Aluminum: 138 lbs. (63 kg), Cast Iron: 150-160 lbs. (68-73 kg)

The SANDPIPER HP 10 1" (25 mm) and HP20 2" (50 mm) Metallic 2:1 High-Pressure Pump provide nearly double the force in applications where pressure is priority and excellent flow rates are a must. This high-pressure air pump is ideal for thick, viscous fluids (high specific gravity), high head pressure applications, and moving fluids a long distance.

Incorporating two additional air chambers and one extra air side driver diaphragm, doubles the surface area on which air pressure is exerted. This magnifies the force by nearly doubling the air inlet pressure. The magnified pressure is delivered directly to the pumped fluid via the fluid diaphragms. SANDPIPER AODD pumps achieve high discharge pressures and excellent flow rates.

• Nearly 2:1 high pressure with the full flow of a traditional 2" pump with the capability to overcome a higher pressure range.
• Simple construction and ease of maintenance
• Self-priming and end-ported for improved flow
• HP10 Pressures up to 232 psi (16 bar), flow rates up to 33 gpm (125 lpm)
• HP20 Pressures up to 232 psi (16 bar), flow rates up to 92 gpm (348 lpm)
• Bolted construction for greater integrity and reliability
• Reliable pneumatic air valve is fully serviceable
• Safely deadheads - stalls against closed head without damage
• Restart on demand
• Suitable for a wide range of applications:
• Available in either aluminum or stainless steel wetted path material
• Aluminum non-wetted center section
• Elastomeric options include:
• Buna
• Santoprene (PTFE balls)
• Neoprene
• PTFE
• Standard weighted elastomeric or solid PTFE check valve balls & stainless steel seats for high specific gravity and viscous fluids applications
• Available with NPT or BSPT threaded porting options
• All models are ATEX approved