67C Series Technical Specifications Body Size, Inlet and Outlet Connection Type 1/4 in. NPT Maximum inlet pressure (body pressure rating)1 All models except 67CS and 67CSR. 250 psig (17.2 bar) Models 67CS and 67CSR: 400 psig (27.6 bar) Outlet Pressure Range See Table 1 Maximum Emergency Outlet Pressure(1) 50 psi (3.45 bar) over outlet pressure setting Full Open Flow Coefficient Main Valve:C:11.7: C:0.36;C.:32.2 Internal Pressure Relief Valve:C: 1.45, C:0.045;C,:32.8 IEC Selection Calculation Factors Main valve:X:0.66;F:0.89,F0.50 Accuracy Inlet Sensitivity: For every 25 psig (1.72 bar) change in inlet pressure, the change in outlet pressure is less than For every 25 psig (1.72 bar) change in inlet pressure, the change in outlet pressure is less than 0.2 psig (0.014 bar). Repeatability: 0.1 psig (0.007 bar) (2) Air Consumption:Repeated testing has not revealed significant leakage Model 67CR, 67CSR, 67CFR, and 67CFSR Internal Pressure Relief Valve Performance Low flow capacity, available only for smaller seat leaks; if inlet pressure exceeds the maximum pressure rating of the downstream equipment or exceeds the maximum outlet pressure rating of the regulator, the pressure relief valve will not operate. the maximum outlet pressure rating of the regulator, other overpressure protection measures must be provided. Approximate Weights Models 67C, 67CR, 67CF, and 67CFR. 1 lb (0.5 kg) Models 67CS and 67CSR: 2.5 lbs. 2.5 lbs (1.1 kg) Models 67CFS and 67CFSR: 4 lbs. 4 lbs (1.8 kg) Temperature Range Nitrile Rubber (NBR) Standard bolting: -20° to 180*F (-29° to 82*C) Stainless steel bolted: -40* to 180°F (-40* to 82°C)
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