Description The Jabsco Joker Valve 29092-1000 for Manual Toilets series 29090, 29120 & 59128 is a critical non-return valve that controls wastewater flow in Jabsco manual marine toilet systems. Installed in the discharge outlet, the joker valve prevents backflow of waste and seawater into the bowl, while also reducing odours within the sanitation system. Manufactured from flexible, marine-grade elastomer, it is designed to withstand continuous exposure to saltwater, waste, and marine sanitation chemicals. Regular replacement of the joker valve is essential to maintain correct flushing action, prevent bowl refilling, and avoid pressure loss in the discharge line.
