HDF Pumps are recommended for abrasive slurries, suspended and non-suspended solids and line-size solids. All SANDPIPER® Heavy Duty Flap Pumps are configured with bottom discharge porting to prevent settling solids from shortening pump life and provide superior suction lift. HDF3-A/HDF4-A pumps are thick wall constructed of Sand Casted Aluminum with elastomer and TPE (thermal plastic elastomer) diaphragms and check valves. See tabs below for a complete description.

Port Size
3" ANSI
Capacity
0 to 260 gpm (988 lpm)
Air Distribution Valve
No-lube, no-stall design
Solids-Handling
Up to nearly 3" (75 mm)
Heads Up To
125 psi or 289 ft. of water (8.6 bar or 86 meters)
Displacement/Stroke
.026 gallons (.098 liters)
Max Operating Pressure
125 psi (8.6 bar)
Shipping Weight
Aluminum: 245 lbs. (110 kg)