Jabsco Joker Valve

The Jabsco Joker Valve is a compact, reliable one-way check valve engineered for marine and RV plumbing systems where backflow prevention is critical. Designed for bilge, waste, and freshwater applications, this valve protects pumping systems from unwanted reverse flow that can damage equipment or compromise system integrity. Whether you're maintaining a boat, motorhome, or marine installation, the Joker Valve delivers proven performance in demanding saltwater and freshwater environments.

This valve operates on a simple but effective mechanical principle: fluid flows freely in one direction while an internal flapper mechanism instantly blocks reverse flow. The compact design—measuring just 5 by 2 by 6 inches and weighing only 0.1 lbs—makes installation straightforward in tight spaces. Built to withstand the corrosive marine environment, the Jabsco Joker Valve resists saltwater degradation and maintains reliable performance across temperature and pressure variations typical of vessel and RV systems.

This replacement kit is compatible with Jabsco pump models 29090, 29120, 29200, 58040, 58060, 58080, 58260, 58240, 58280, and 58500, making it an essential maintenance part for owners of these systems. Installation requires no special tools, and the valve integrates seamlessly into existing plumbing configurations. Regular inspection and replacement of the Joker Valve ensures your marine or RV water and waste systems remain protected, extending pump life and preventing costly system failures.