The Johnson Viking Manually Operated Bilge Pump is a bulkhead fitting, manually operated, self priming diaphragm pump designed for bilge pump applications on boats. 

Specifications:
Output Capacity depends on installation conditions and pumping rate.
Performance given at head pressure of 1.45psi (10kPa) rated at 45 strokes per minute with 38mm (1.1/2") ports, 37.5 litres per minute (594 US GPH)

Materials: Pump Body: ABS, Nylon, Polypropylene,   Elastomers: Nitrile Rubber,   Shafts: Stainless Steel
Hose Connections: 25mm (1") or 38mm (1.1/2")
Max Liquid Temperature: 60°C
Storage Temperature: -40°C to 60°C
Weight: 0.7kg