Geyser safety valve installation is a must in order to comply with geyser fittings requirements in South Africa. Safety valve serves to protect water heating cylinder from possible explosion that results from faulty thermostats. Sometimes a geyser thermostat can get stuck on one position, and that may result in overheating.
In such cases, the heating element will continue to boil water since the “monitor” is stuck and there is no instruction to cut off power supply to the geyser. This creates pressure from the steam built up in a closed cylinder.
If the geyser safety valve is not installed, such a case will result in geyser explosion.
The safety valve works by opening to let out air and reduce pressure whenever the pressure rises beyond the safe value.
The second function of this valve is over pressurizing. This normally occurs when your pressure reducing valve fails. When that happens, there is no reducing of pressure from municipal lines.
The safety valve will immediately sense such a surge in pressure and open to release extra pressure out.
Installation of Geyser Safety Valve
Alternatively, turn off the water at the house supply valve.
After that, the removal of the relief valve is done by turning it anticlockwise with a large pipe wrench. Then application of a sealant to the threads of the new relief valve takes place.
Finally, the valve is inserted into the opening in the tank and threaded in. The valve should be tight enough not to allow water to escape.