Robertshaw 720-474 Step Opening Pilot Gas Valve. The 720-474 is a genuine product manufactured by Robertshaw, who is a dedicated producer of home and commercial thermostats. This particular product is a Standing Pilot Gas Valve that utilizes FNPT (female national pipe thread) connections; one inlet and one outlet both measuring 1/2 inches. It is part of Robertshaw's 720 series of Dual Valve Gas Controls and great for a wide variety of heating applications. Also has four different gas flow positions including "set", "on", "off" and "pilot" which are set manually with a small switch. Within the valve are "built-in stops" that will prevent an accidental positioning of the switch to the off position. The necessary part of the valve that need to be adjusted at times are located on the top of the valve for easy access, like the switch and wiring connections. This is a replacement for the Robershaw 7A3C4F025 when not a new installation.
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