1/2" Combined Safety & Non-Return Valve extension - Permissible operating temperature 70deg

- Permissible operating temperature 70deg

- 70mm in height for 150mm version and 85mm in height for 200mm version

- Shut off zero leakage

If water flows into the trap at a faster rate than can be drained by the 50mm waste pipe

- Aluminium stretch mesh encapsulated into polymer rubber

1/2" Combined Safety & Non-Return Valve extension - Permissible operating temperature 70degDESCRIPTION: 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