Full port. Blowout-proof stem. IAPMO listed to NSF/ANSI-61-8, NSF/ANSI-372 CSA ANSI Z21.15 / CSA 9.1. CSA ASME B16.44: 5 psig and UPC-IGC-157. UL 1477 (YQNZ): compressed gas shutoff valves. UL 842 (MHKZ): manual valves 250 psi. UL subject 258 (VQGU): trim and drain valves. Valve pressure rating 600 psi/41.4 bar non-shock cold working pressure.