NIBCO, MB936UB, U51TB-V, Bleach Ball Valve - Model D, Universal Ends, Tru-Bloc® True Union, Vented Ball, Corzan® HP CPVC Schedule 80, FKM, 1-1/4"The Chemtrol® Tru-Bloc® True Union bleach ball valve is a viable solution for sodium hypochlorite transfer and injection applications. The vented ball effectively vents sodium hypochlorite out-gassing to the pressure port. The valve's injection molded CPVC construction with FKM O-ring is ideal for use in water treatment, aquatic centers, and paper and textile applications.All inner surfaces of the Tru-Bloc® bleach ball valve are kept constantly wetted and vented to the upstream side when the valve is in the closed position, eliminating the conditions required for gas accumulation and caustic crystallization in the body cavity. The Tru-Bloc® valve is engineered with a self-adjusting seat and upstream and downstream blocking capability to stop flow when an alternate union is removed for servicing the piping system. The valve can be easily joined with the universal socket and threaded end connections. Corzan® CPVC Schedule 80 thermoplastics demonstrate excellent mechanical strength over broad temperature range, outstanding underground performance and superior hydraulics. Chemtrol Corzan® CPVC valves are lightweight, easy to install, maintenance-free and will not rust, scale, pit or corrode. Choose Chemtrol® valves for the most reliable, versatile and economical valve option in commercial and industrial applications.Features:Valve pressure rating 250 psi at 73°F water non-shock full-portTrue Bloc® designVented ballFKM O-ringIncludes both socket and female NPT thread end connectionsOrange handleDo not use or test with compressed air or other gasesASTM F1970NSF/ANSI Standard 14NSF/ANSI Standard 61, Annex G.