Jeavons J48 1″ Regulator, 12.5 to 25 mbar. This Elster Jeavons J48 Series Regulator is suitable for Low Pressure appliance and service applications using both NG or LPG, with a 1″ BSP inlet and outlet thread. Maximum inlet pressure is 350 mbar. An Outlet Pressure range of 5 to 100 mbar is achieved by using different springs which are available to purchase separately. The Regulator is supplied with a 12.5 to 25 mbar spring as standard. This Regulator may be mounted in any orientation. Approved to EN88-1 Class A2.