What are acceptable safety devices?

Acceptable safety devices include:

• Temperature relief valves

• Temperature control arrangements such as non-self-resetting energy cut outs and cylinder thermostats (interlocked to prevent flow from the primary circuit).

• Combined temperature and pressure relief valves

• Pressure reducing valves

Expansion vessels installed in combination with expansion relief valves. For further information, including advice about safety device arrangements for different methods of heating, please refer to the relevant version of the Building Regulations.