Some valves both gas and water manufactured before 1980 contain a lubricant to help the valve seal better and operate more smoothly.
Hot water heater gas valve on position.
Be sure to check the valve opening once it s closed to ensure there are no water leaks.
Apply gas rated pipe thread sealant or tape don t use standard white teflon tape to the gas nipple and thread it into the new gas control valve.
Locate the gas pipe that feeds gas into the water heater and locate the shut off valve.
So before disconnecting the end that goes to the dryer i turned the value to the way it is showing right now in the picture attached.
If it reads more than 400 millivolts then it shows you with a good thermophile output for your device.
The valve is called a t p valve or tpr valve for temperature and pressure relief.
The pilot light is still on and gas from the main supply line is still on.
Once cold water begins to flow from the tap turn it off.
This is not the valve located on the control box mounted on the water heater but is instead a valve installed along the pipe run itself.
Turn the gas valve back on from the pilot position or turn electricity back on to the tank.
The gas dryer that was connected to this valve was recently sold and before that the yellow valve was in north and south position.
Turning the water heater gas valve to off is not the place to do this.
On a gas water heater the gas control valve contains the thermostat and pilot light controls.
You need to turn the inline valve ninety degrees so that it is perpendicular with the gas line.
If all goes well a tpr valve never gets used except during testing.
The valve can have different appearances depending on who did the installation and when it was installed.
Need to hire a plumber.
Unlike components of an electric water heater the gas control valve is entirely outside the water heater and mounted near the bottom of the unit.
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Go back to the hot water tap opened earlier.
Tighten the nipple using two pipe wrenches photo 7.
It is necessary to hold your gas control knob in the pilot position repeat this test.
The off position on the gas valve dial only means that it will not heat the water.