EPDM Duckbill Check Valve Description
The XH Type Check Valve is specifically designed for potable water and clean water applications with low suspended solids. The valves are NSF61 Certified for potable water applications. The XH Type comprises a rod-guided ply-reinforced membrane and perforated disc. The duckbill valve is available in a full-body design and full-faced wafer style with ANSI, DIN or other standard drilling pattern. XH duckbill Valves have low headloss and a high backpressure rating and do not have moving parts such as hinges and springs that can seize if routine maintenance and lubrication is not performed.
XH Duckbill check valve membranes are fabricated in dedicated compression molds and are ply-reinforced for superior durability. XH Type operate solely on differential pressure – forward differential pressure deflects the membrane away from the perforated disc allowing flow, reverse differential pressure forces the membrane against the disc to prevent backflow. XH Type valves eliminate bang and slamming problems common to conventional swing check valves.
