Ariston 65114653 T&P Valve 1/2" 7 Bar

The Ariston temperature and pressure relief valve (often called a T&P valve) is a safety component used on standard water heaters. Its role is to automatically discharge water if the temperature or pressure inside the tank rises above safe limits, protecting the appliance and the property from damage. This valve has a 1/2 inch connection and a 7 bar pressure rating, and it is manufactured by Ariston for their range of water heating products. It is a direct replacement for the original part, ensuring correct fit and reliable operation. Temperature and pressure relief valves are a mandatory safety feature on many unvented hot water systems and standard water heaters. The valve should be tested regularly by operating the lever to ensure it is not stuck.

• The valve is constantly dripping or discharging water from the outlet pipe, even when the water heater is not heating.
• The test lever does not operate smoothly or fails to open the valve when manually lifted.
• There is visible corrosion, limescale, or mineral build-up around the valve body or outlet.
• The water heater shows unexplained pressure or temperature fluctuations that may indicate a stuck valve.
• Water is leaking from the threaded connection where the valve screws into the tank.
• The valve weeps slightly during heating cycles, suggesting a failing internal seal.
• The valve fails to reseat after manual testing, causing a continuous drip.
• The valve discharges water intermittently, indicating pressure spikes.

• Confirm the part number 65114653 or ARISTON65114653 matches the valve you are replacing.
• Check that the connection size (1/2 inch) and pressure rating (7 bar) are correct for your specific water heater model.
• Inspect the mounting thread and sealing surface on the tank for damage or debris before fitting the new valve.
• Ensure the discharge pipework is correctly installed and routed to a safe drainage point.
• Check the serial number or model number of your water heater to confirm compatibility.