Monessen Ventfree Fireplace Propane Gas Millivolt Valve 14D0468 SIT 0820636
Brand: Monessen
Color: Silver

Only works with ventless product, not with direct vent sealed glass units. 14D0468 Monessen Hearth Replacement SIT 820 NOVA Vent Free Fireplace Propane Gas Valve Model 0820636. 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.

Propane Gas. If you have a sealed glass fireplace this will not work.
Ventfree, Ventless, Unvented Logs
Valve number 0820636, verify this matches yours
Course Thread Thermocouple
Compare your valve number, there are several models