Pressure & Temperature Relief Valve
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Watts Hot Water Pressure Relief Valve 174A-020-150 20mm 125 psi | 1034 kPa
Watts
$238.50Watts Hot Water Pressure Relief Valve 174A-020-150 20mm 125 psi | 1034 kPa plumbonline now offer you GENUINE Watts Water Technologies valves, online and ready to order with complete tech specs to ensure your seamless selection. Watts Series...$238.50 -
Watts Hot Water Pressure Relief Valve suits Raypak 174A-020-125 20mm 125 psi | 862 kPa
Watts
$233.00Watts Hot Water Pressure Relief Valve suits Raypak 174A-020-125 20mm 125 psi plumbonline now offer you GENUINE Watts Water Technologies valves, online and ready to order with complete tech specs to ensure your seamless selection. Watts...$233.00 -
Out of stock
Watts 40XL Pressure & Temperature Relief Valve 25mm 100PSI
Watts
$250.80Watts 40XL Pressure & Temperature Relief Valve 25mm 100PSI Series 40L, 40XL Automatic Reseating Temperature and Pressure Relief Valves are used in commercial water heater applications to provide automatic temperature and pressure protection to hot...$250.80
Hot Water System Pressure & Temperature Relief Valve P.T.R
What is a PTR Valves Function?
Pressure
The Pressure and Temperature Relief valve (PTR) is designed to relieve the increase in pressure caused by water expansion during the normal heating cycle in a hot water tank. The valve will then relieve the increase in pressure by releasing drips of hot water to the drain line. Should the electrical temperature cut-out device that controls the water heating element ceases to operate correctly, the water will overheat. The Pressure & Temperature Relief Valves function is to release the pressure.
Temperature
The temperature of the water in a pressurised unvented or mains pressure hot water heater cannot exceed 99° C. If the thermostatic controlling the element(s) fail the PTR valve operates.