The Reliable Riser Check Valve and Riser Check Valve is a general-purpose fire protection system check valve. The valves have (hinge pin-up) or hinge pin-up vertical installation approval, grooved end connections, and a changeable faceplate.The Model CVE check valve incorporates a bronze seat and an EPDM-faced clapper. The Model CVE Riser Check Valve is designed to be utilised as a wet system riser or zone control and features two-inch ball valve main drain, supply, and system-side pressure gauges. Both factory-assembled and individual deliveries of the Riser Check trim are available.