Elster Jeavons J78RS 1 Commercial Gas Regulator – 13–20 mbar The Elster Jeavons J78RS 1 Commercial Gas Regulator is a high performance pressure regulator designed for precision, safety and reliability in commercial and industrial gas systems. With an adjustable outlet pressure range of 13–20 mbar this model provides consistent and accurate gas flow control for Natural Gas and LPG installations. Built to meet the demands of gas distribution and appliance service regulation the J78RS performs dependably under inlet pressures of up to 350 mbar making it suitable for high demand environments such as factories, catering setups and utility services. A key feature of this model is the ¼ BSP threade