Type: 627M-423 Material: Ductile Iron Trim: Nitrile Inlet x Outlet: 3/4 in. FNPT Capacity: 24,759,000 BTU/hr Port Size: 1/2 in. Vent Size: 3/4 in. NPT screened Outlet Pressure Range: 35 to 80 PSI (2.4 to 5.5 bar) Maximum Operating Pressure: 750 PSI (51.7 bar) Temperature Range: -20° to 180°F (-29° to 82°C) Certifications: CRN