SA1 Sandpiper Air Operated Double Diaphragm Heavy Duty Flap Metallic Pump

SA1 Heavy Duty Flap Valve air operated double diaphragm 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. SA1 pumps are thick wall constructed of Sand Casted Aluminum, Cast Iron and Stainless Steel with elastomer and TPE (thermal plastic elastomer) diaphragms and check valves. See tabs below for a complete description.


Port Size
SA1: 1” NPT
SA25: 1″ BSP (Tapered)
0 to 42 gpm (159 lpm)
Air Distribution Valve
No-lube, no-stall design
Up to 1″ (25.4 mm)
Heads Up To
125 psi or 289 ft. of water (8.6 bar or 88 meters)
.10 gallons (.38 liters)
Max Operating Pressure
125 psi (8.6 bar)
Shipping Weight
Aluminum: 48 lbs. (21 kg)
Cast Iron: 76 lbs. (34 kg)
Stainless Steel: 79 lbs. (36 kg)

Click here for SA1 Metallic Data Sheet.