How to Replace a Fill Valve On a Hot Water Boiler


If you have a hot water boiler in your home, shop or garage, The boiler has one of these. Usually they fail to shut off when there bad. You will notice this when the gauge on the boiler rises ubove 20 psi when it is not running

Things You'll Need

  • s1156f fill valve
  • wrenches
  • tephlon tape
  • First you will need to turn off the water supply upstream of the valve. The shut off is usually close to the fill valve or at least somewhere on the same pipe

  • Remove the nut on the inlet side of the fill valve. hold the other side of the valve with a wrench. Be careful not to twist the pipe that connects to the valve

  • Remove the valve from the copper pipe by holding the connection that the valve is secured to. These usually come off rather easy. Reinstall the valve in the reverse order of disassembly

  • Turn water on ,check for leaks and operation of valve. You should hear water fill boiler and then stop once the boiler reaches 10-15 psi

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  • Photo Credit watts valves
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