... , are solid gate, rising stem, gate valves with resilient seals. They are purpose made for mud, ... Factory Pressure Tested in Accordance with API.6A Can be supplied with Flanged End Connections, Hammer Union ... Models to NACE MR-01-75 Available with Pressure Ratings up to 5,000 psi in ... 4" Valve Sizes Full Material Traceability Guaranteed Supplied with Full Certification at no extra charge 2. APPLICATIONS ...