Gas Valves

gas valvesDo you know how your gas valves operate? It’s actually a fairly simple process. The valve controls the pilot light and the water temperature. In order to light the pilot, a button on the valve is pressed, which sends a small amount of gas to the device.

The next step: The pilot then heats up a piece called the thermocouple, which sends an electrical current to the control valve. At this point, gas will flow from the safety valve to the pilot, keeping it lit continuously.

If we’re working to diagnose a gas valve issue, we’ll first check to see if the pilot light is on. If so, this means that the thermocouple has enough voltage to keep the safety valve open. Let’s say we’re working on a hot-water heater: If the thermopile is weak, it may not be producing enough power to open both the safety valve and the main valve together. If replacing the thermopile doesn’t fix the issue, then you’ll need a new gas valve.

If you need more information or help with gas valves in McKinney or the surrounding area, please give us a call today. We’re experts in the field of gas valve repair!

Gas valves: just the facts

  • water heaterIf you look at your valve, you’ll notice two probes that are coming out of the back. The shorter one is a safety device that interrupts gas flow if the thermostat malfunctions. The longer one is the temperature probe, which controls your settings with the aid of a rod inside of it.
  • If a water heater gas valve malfunctions, it cannot be repaired; it must be replaced instead.
  • Take great caution when you’re dealing with gas. If you don’t feel completely comfortable working on or checking gas valves, please contact a professional for help.
  • Never use a hammer on a water heater gas valve, even if you’re just tapping it.

Need expert assistance with gas valves in McKinney, Dallas or Fort Worth? The pros at H&H Heating and Air are here to help you! We’re available 24 hours a day, seven days a week, in the event of an emergency. Call today!