Sandpiper’s Metallic AODD Pump, the Heavy Duty Flap Valve Pump, the HDF3 & HDF4 

Sandpiper’s Metallic AODD Pump, the HDF3 & HDF4, are a heavy-duty flap valve pump that has been proven to be a solution to the most common challenges in sump applications, mine dewatering and any liquid application involving solids. These pumps are the most recommended pumps for abrasive slurries, suspended and non-suspended solids and up to ¾” line-size solids. These pumps are part of Sandpiper’s Evolution Portfolio improvement it has experienced an optimization towards the capabilities of the pump. The pumps are thick-walled constructed of Sand-Casted Aluminum, Cast Iron and Stainless Steel with elastomer and TPE (thermoplastic elastomer) diaphragms and check valves.

Some of the features of the AODD Pump highlights the advantages of the pump in its industrial applications;

• Bottom discharge porting: Preventing settling solids from damaging the diaphragm and shortening the pump’s life.
• As part of Sandpiper’s Evolution Portfolio, these efficient pumps experienced a 19% flow rate increase, with a new maximum flow rate of up to 310 gpm (1,173 lpm).
• Flap check valves pumps: A large flow area allowing up to ¾” line-size solids to directly through the pump.
• Suction lift advantage: Sandpiper’s flap valve design provides superior suction lift capabilities up to 24 feet in water. Diaphragm placement and flap valve seating combined to create a unit capable of suction lifts 15% greater than ball valve pumps.