AVK series 41 swing check valve with resilient seat, for use in pumping applications to prevent back flow. The valves are suitable for drinking water and waste water applications. The disc is connected to the shaft via a flexible bush which allows the rubber disc and valve seat to perfectly align provide optimum sealing performance. All interior parts are stainless steel or coated with drinking water approved epoxy coating or EPDM rubber. The series 41 valves are available in many configurations, including closed bushing, free acting or with a lever and weight to mitigate pressure surges.