A replacement joker valve for the Jabsco Diaphragm Shower Drain & Bilge pumps (50880 pumps).
A replacement joker valve for the inlet or outlet on a Jabsco Diaphragm Shower Drain & Bilge Pump (50880 pumps). The joker valve acts as a one-way valve and stops backflow from the pump.
This joker valve will not fit the Jabsco Self-priming Diaphragm Waste Pump (50890 pumps) as this pump requires larger joker valves.
There is also a complete service kit for the Jabsco Self-priming Diaphragm Waste Pump which includes the two joker valves.
