SPEC:92M/M X 74M/M X 67.1M/M 1) REGULATING PERFORMANCE: INPUT PRESSURE:7"WC OUTPUT PRESSURE:5"W.C+-0.3" 2) MAX FLOW RATE:250000BTU/HR 3) MAX WORKING PRESSURE:1/2" PSI (3.5KPA) 4) TEMPERATURE RANGE:32 oF~225 oF 5) LEAKAGE SHOULD BE LESS THAN 0.33ML/MIN UNDER 15KPA