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. 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. Product Dimensions: 8 x 7 x 7 inches.Item Weight: 2.2 pounds. This item is in the category "Home & Garden\Home Improvement\Heating, Cooling & Air\Fireplaces & Stoves\Fireplace & Stove Accessories". The seller is "usa*stores" and is located in this country: US. This item can be shipped to United States.