Metal-seated swing check valves from Val-Matic are designed for municipal and industrial water and wastewater applications. Metal seating is standard on Series 7900 oil cushion swing check valves and an option on Series 7800 valves. Both the removable body seat and integral disc seat are made from C95400 aluminum bronze. The valves are designed, built and tested for compliance with ANSI/AWWA C508, NSF/ANSI 61, NSF/ANSI 372 and MSS SP-71/MSS SP-136.  630/941-7600; www.valmatic.com.