Exactly how does a gas valve work in your home?
You probably don't think about it much until the heat goes out, but understanding how does a gas valve work is actually the key to knowing how your furnace or water heater keeps you cozy. Most of us just flip a switch or turn up the thermostat and expect magic to happen. In reality, there's a very precise, very safe mechanical dance happening inside that little metal box attached to your appliance. ...