Flomatic® Corporation introduces the simple but reliable 316 stainless steel Model 508S6 ball check valve. It features a full-ported valve seat uniquely designed to allow a strong phenolic ball to seat on a nitrile (Buna-N) seat. For vacuum or anti-flooding valve applications, an optional floating rather than sinking ball is used. Due to its simple, flow-efficient design, the valve is virtually maintenance-free. It is commonly used in submersible wastewater lift-station applications. The optional vacuum breaker mounted on the access port reduces hydraulic shocks (water hammer). Rated at 150 psi and a maximum 180°F (82.2°C), this model is now available for immediate ordering in 1.25-, 1.5 and 2.0-inch (31.75-, 38.1- and 50.8-mm) sizes.