Robertshaw 720-081 1/2"x3/4" Gas Valve. The 720 Series Gas Valve is designed for heating applications and constant pilot valves. The Robertshaw 720-081 1/2"x3/4" Gas Valve is a 6-Function Valve that also features a manual valve, safety shutoff magnet, dual automatic valves, main gas regulator, and pilot adjustment. Along with the 6-functions, this valve also includes wiring connections that are easy-to-access on top of the valve. The valve has a 150,00 BTU capacity, .75 Voltage, and a 1/2" Inlet by 3/4" Outlet. This Robertshaw 720-081 1/2"x3/4" Gas Valve is ideal for converting natural gas systems to LP systems, quickly, and efficiently.