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