AVG PTR20-700-LF 20mm 700kPa PTR / TPR Pressure Temperature Relief Valve Pressure & Temperature Relief Valve An external check valve must

An external check valve must be used if this plain PLV pressure limiting valve is used in a caravan application

•    Maximum pressure rating: 1400 KPa

Ship next day by Aus Post Regular or Express satchels

This allows the roof flashing to be used in a repair job to wrap around an existing roof penetration

AVG PTR20-700-LF 20mm 700kPa PTR / TPR Pressure Temperature Relief Valve Pressure & Temperature Relief Valve An external check valve mustOverview Australian Valve Group (AVG) PTR20 700 LF 20mm (3 4") 700kPa PTR Pressure and Temperature Relief Valve (also known as TPR valve) is cross compatible with other popular makes such as Reliance HT55 PTR valve with same fitments and functions. During the hot water services' heating cycles, the volume of water will expand as the temperature increases. This volume expansion creates excessive pressure inside the water cylinder and must be regulated.