Get current pricing for Sandpiper, SB1 1/2 type SGN-6-A Sandpiper 1.5 Aluminum Diaphragm Pump. Model Sb1 1/2 Type Sgn-6-a. Serial # 396038. Pump Has 1.5 Female Npt Inlet And Outlet. Requires Pneumatic Sup . Product Category: Process Equipment, Sub Category: Process Pumps: