Monessen Ventfree Fireplace Natural Gas Millivolt Valve 14D0467 SIT 0820637. For Natural Gas, If you have a sealed glass fireplace this will not work.Valve number 0820637, verify it matches yours. Course Thread Thermocouple M8 Metric Thread. Compare your valve number, there are several models. Only works with ventless product, not with direct vent sealed glass units. 14D0467 Monessen Hearth Replacement SIT 820 NOVA Vent Free Fireplace Natural Gas Valve Model 0820637. This is a millivolt valve. Uses a thermopile (main valve), and thermocouple (pilot). Has 3/8 female pipe thread inlet and outlet connections. You can vary hi - lo flame height.
Millivolt valves can be controlled by a switch, remote control, or thermostat. This is used by Monessen, Majestic, Empire, and many other fireplace companies. There are many versions of these valves with different thermocouple threads.
Make sure you match your model number. Any product you return must be in the same condition you received it and in the original packaging. We usually respond within 24 hours on weekdays. Thank you for shopping at our store.This item is in the category "Home & Garden\Home Improvement\Heating, Cooling & Air\Fireplaces & Stoves\Fireplace & Stove Accessories". The seller is "mrhorizon" and is located in this country: US. This item can be shipped to United States.