The RM 1/2" temperature and pressure relief valve is an essential safety component designed specifically for integration with unvented hot water cylinders, including the Joule range. Calibrated to actuate at a precise 7 bar threshold, it safeguards pressurised vessels by automatically discharging water if internal system pressure or temperature exceeds safe operational limits. This rapid response mechanism prevents catastrophic structural failure and ensures full compliance with UK building regulations regarding unvented heating systems.

Weighing just 0.2kg and measuring 700mm in width across its assembly, the valve features standard 1/2" threaded connections for rapid, secure installation. Manufactured from highly durable materials to withstand constant thermal cycling and high-pressure environments, it provides uncompromised reliability. This Stelflow-compatible valve is a critical replacement or installation part for heating engineers maintaining safe hydraulic conditions in domestic and commercial cylinder setups.

Q: What is the pressure rating for this relief valve?
A: The valve is factory-calibrated to discharge at a pressure of 7 bar.

Q: Which cylinder ranges is this component compatible with?
A: It is specifically designed for use with Joule unvented hot water cylinders and Stelflow models.

Q: What size are the connection threads?
A: The component features standard 1/2" connections for straightforward pipework integration.

Q: Why is this valve necessary for unvented cylinders?
A: It acts as a mandatory safety mechanism to vent excess pressure and prevent structural vessel damage.