An Advanced Water Caleffi O-ring pressure relief valve is to prevent a dangerous build-up of system pressure. They are commonly used in most domestic properties and can be found on boilers and unvented cylinders. It is designed to open up to release the pressure when the level becomes too high, and close again when the pressure has dropped to within a safe range. This pressure relief valve is set to a specific pressure to ensure maximum safety for the system.

• Pressure relief valve for MK1 Caleffi multibloc
• Pressure rating is 6.0 bar
• Push fit type
• 061-468-0006