Warren Rupp/SandPiper Aluminum Diaphragm Pump. Model SA3-A. Inlet/outlet- 4 in., flanged. Adjustable flowrate: 0 to 260 gpm. Solids handling up to nearly 3 in. Heads up to 125 psi or 289 ft. of water. Overall dimensions: 35 in. L x 16 in. W x 33 in. H. Flap valve SA Series Sandpiper pumps are especially recommended for slurries and liquids with suspended solids. Flap-valves allow passage of suspended line-size solids without damage. (ACN31a).