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Hot Water Heater Gas Valve Replacement [2011-08-30]

brass-mini-ball-valveThere is a gas valve attached to the supply pipe. If there is a problem with this valve, you would not get properly heated water. So, then if you want to know how to go about gas valve replacement, you have hit the right link!

Hot Water Heater Gas Valve Replacement

Point 1: Cut the water and gas supply to the heater. You would find the water shut off above the water heater on the incoming water pipe. Likewise, the gas has to be shut off on the gas pipe, which has a connection with the gas control valve.

Point 2: For draining the water from the heater, attach garden hose to the valve of the drain. You would find it towards the bottom of the tank. Run or rather direct the other end of the hose where pouring hot water would not create any problem. Once you are done with that, open the drain valve and loosen one of the flex connections located on top of the tank for breaking the vacuum.

Point 3: After the water drains out of the tank, disconnect the gas control valve. But before that you would need to disconnect the gas flex hose. The next to be disconnected are the 3 tubes entering the gas valve from the bottom. These are the pilot tube, burner tube and the thermocouple, from left to right respectively. Read more on water heater problems.

Point 4: At the spot where each of the above mentioned tubes enter the gas valve there would be nuts, so loosen them. Then pull down on the tubes for detaching them from the valve. Now remove the gas valve from the tank, which will be made easy by a pipe wrench or a pair of large channel locks. It will help you unscrew the valve from the tank.

Point 5: At this point, the valve has been detached from the tank. The task at hand is to determine the length of the shank, which is the threaded nipple coming out of the back of the valve, into the tank. Let the shank to be replaced be of the same length as the original one. This holds true for the 3 tubes - pilot tube, burner tube and the thermocouple. This is a 'must remember' when it is about gas valve replacement. Read more on water heater element replacement.

Point 6: Replace the valve and just as the dismantling or unwinding steps were done, do a rewind of those steps, ending at reinstating the water supply as well as gas supply. But do not forget to attach the teflon tape or pipe dope or both to threads of the shanks for preventing leaks!
All Info From : Zhejiang Kingsir Valve Co., Ltd
Main Products : Brass Ball Valves, Brass Bibcock, Floor Drain