RMC’s Pressure, Temperature and Vacuum (PT&V) Relief Valves are safety controls for unvented water heaters. They ensure that the pressure and temperature of the water do not exceed 99°C in the event the normal thermostatic controls fail.

PT&V Relief Valves are available in 15mm and 20mm configurations.

• Integral vacuum breaker device
• Offers protection against implosion during contraction cycle
• Auxiliary pressure relief device
• Prevents pressure building up in the event of a blockage in the drain line
• Female BSP thread on outlet thread prevents incorrect installation to the tank
• Plastic coated temperature probe prevents electrolysis of the probe outer casing
• Dezincification resistant
• Meets Australian Standard for potable water supply
• Sealed spring cavity prevents spring from seizing in the event of calcification
• Suitable for horizontal or vertical installation
• Individually tested and calibrated