1/2" Combined Safety & Non-Return Valve extension - Sizes from 16mm to

- Sizes from 16mm to 32mm

Thermowatt thermostat (dual element models)

- Shut off zero leakage

1 x Cylinder Thermostat

1/2" Combined Safety & Non-Return Valve extension - Sizes from 16mm toDESCRIPTION: A safety valve is designed to relieve any pressure in a heating system where the component are unable to accommodate any rapid and excessive pressure build up. Either type of valve should be fitted as close to the boiler as possible, and should incorporate a " pipe connection which enables discharge to a point outside of the building. It should discharge in a position which is noticeable, BUT NOT where any discharge may cause bodily