Sandpiper’s Metallic AOD (Air-Operated-Diaphragm), High Pressure Pump, the EH-2 M 

Sandpiper Metallic AOD Pump, the EH-2 M, isa 2:1 ratio high-pressure pump powered via compressed air. The pump is capable of delivering discharge pressures twice the inlet pressures up to 250 psig (17.2 barg), the EH-2 M pump is designed for durability . The pump can be utilized in demanding applications, such as filter press feeds, as well as other critical applications requiring higher discharge pressures most air-operated-diaphragm (AOD) pumps are incapable of achieving.

The pump is engineered to include weighted check balls and metallic seats to help ensure a robust and durable valve seal for performance in high-pressure applications. Unlike other high-pressure pumps on the market, the Sandpiper’s EH2-M unit features a balanced diaphragm design. The design allows for a minimal pressure differential across the diaphragm, helping to decrease the need for replacement parts – effectively decreasing downtime and ultimately lowering the total cost of ownership. The high pressure pump is available in cast iron and stainless steel with various diaphragm (elastomer) options.

Sandpiper’s EH-2 M Metallic AOD, high pressure pump features that highlights the functionality of the pump in its industrial applications;

• Heavy-duty assembly; Bolted construction using robust materials.
• Durability; Balanced diaphragm design with weighted check-balls and metallic seats for harsh, high pressure applications.
• Suction stroke control; Independently regulated suction stroke allows for optimum stroke control.
• ESADS+ Air Distribution System; Sandpiper is the only AOD pump manufacturer to offer an externally serviceable air distribution system that allows for quick and easy access to the pilot and spool valves without removing the pump from service. Repair or clean in five minutes (versus 55 minutes for competitors), which reduces your downtime by as much as 90%.