Jabsco 50880 Series Marine Shower Drain and Bilge Pumps

Robust, single diaphragm and joker valves make this pump ideal for sink and shower drain applications.
The design also features multi-positional 19mm (3/4") id ports.
The single diaphragm design allows extended dry running, and can self prime up to 3 metres vertical lift.
Output is up to 16 litres/minute (3.5 gallons per minute) Maximum recommended head is 6 metres.

These pumps are extremely quiet, and rated for up to 30 minutes continuous running.