The 700-506 series gas valve is designed for intermittent pilot, direct spark and hot surface applications.Small size, flow,Contains a manual valve, pilot valve and a main air pressure regulator.Just make sure the valve you use has the btu rating range within 5% of the-original. Also some are labeled at different water column but as long as it is very close range the 700-506 gas valve will work.Compatible with gas types: natural, manufactured, blends, and /air mixtures.The 700-506 thermostat gas valve is suitable for many residential and commercial , and is widely used in wall-mounted heaters, boilers, portable domestic stoves and central heating equipment.Colour:As ShownMaterial:MetalPackage Contents:1 x 700-506 Gas ValveOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.