How to replace the shut-off valve of a water heater

 


The water heater's shut-off valve is a very important part of the water heater. If the valve is defective, you should not delay in replacing it. The good news is that you can do it yourself and you do not have to spend money to hire a professional. With the right tools and this guide, you can replace the shut-off valve yourself and save some money.

Turning off the heater

If you have a gas water heater, turn off the gas supply. Let the water heater cool down before touching any parts. If the water heater is equipped with an electric ignition system, the power must be disconnected from the switch box.

Shutting off the water supply

If you cannot shut off the water with the shut-off valve, use the main valve to shut off the water supply to the house.

Draining the water

Use an electric pump or ground hose to drain the heater. The water may still be hot, so care must be taken.

Take measurements

Note the dimensions of the existing valve. Also note the type of valve, i.e. whether it is a compression fitting or an iron fitting.

Purchase the new valve

The new valve must be the same size and type as the old one. If you are not sure of the measurements, it is advisable to remove the old valve and take it with you to purchase a new one.

Removing the valve

Use a spanner of a suitable size (one that fits the valve) and remove it. Be careful not to twist the tube that holds the valve. It may be necessary to use another spanner to hold the tube.

Installing the new valve

Use a spanner (always the right size) and tighten the new valve so that it is secure and fastened in place. Hold the new valve in the off position only.

Checking for leaks

Apply soapy water to the new valve; if there are any leaks, the soapy water will start to bubble. If no bubbles are seen, there are no leaks and the connection is OK.

Call the Emergency Plumber in Cardiff. We are 24 hours available.

Location: Cardiff, UK

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