All personnel installing this device should be trained on the hazards associated with combustible gases and fluids. We assumes no responsibly from damage or injury that may result from servicing or the improper installation of this regulator. OPERATION: The regulator is a high capacity, pounds to pounds, industrial gas regulator. The maximum supply pressure is 250 PSIG. The maximum output pressure is 40 PSI. This regulator is not intended for use in pressure applications below 3 PSIG. The operating temperature range is -40° to +200° F. CAUTION: The regulator is a non-relieving regulator and thus cannot exhaust excess pressure at the regulator. In order to establish an accurate output pressure it may be necessary to cycle the downstream flow or to set the regulator at a slight flow.