Plast-O-Matic Valves, Inc. Self-Closing Thermoplastic Check Valve CK

Series CK consists of machined PTFE diaphragm check valves for 3/4" and 1" pipe sizes, designed for bubble-tight, position-independent sealing without reliance on reverse flow. The valves operate with a cracking pressure of 1.0 to 1.5 PSI and feature EPDM or FKM diaphragms. Maximum working pressure ratings are 40 psi at 77°F and 5 psi at 280°F for both diaphragm materials. Threaded NPT connections are standard. Physical dimensions are 3.6 in. length (A), 1.9 in. width (B), and 3.0 in. height (C) for 3/4"; 4.3 in. length (A), 1.9 in. width (B), and 3.0 in. height (C) for 1". The series does not include socket-end variants or other body materials.