This gauge is for use with POL type LPG gas cylinders only (see pictures for bottle type). Inlet Connection: POL male. Outlet Connection: POL female. Length From Back of POL Connector: 55mm. Note about the use and operation of this gauge: This valve contains a built in excess flow safety valve, this is designed to stop the gas flow in case of a cut or large leak in the pipe further down the gas line.
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