ASME Safety valves - SAFE SN ANSI | ARI Safety valves - SAFE SN ANSI | ARI The ARI-SAFE-SN ANSI (Semi-Nozzle) Safety Valve is a high-performance safety valve designed for pressure relief in systems handling steam, gas, and liquid media. It is type-test approved according to ASME Code Section VIII-Division 1 and carries both UV and NB stamps for national board certification. The valve features a spring-loaded design with... View Flanged 150 lbs 300 lbs ANSI SA216WCB SA351CF8M