Description
The Robertshaw 720-400 is a 24-volt dual gas valve designed for use in natural gas-fired HVAC equipment. It’s a key component that regulates gas pressure and flow to the burner. The valve itself incorporates a manual shut-off valve, safety shut-off magnet, dual automatic valves, a main gas regulator, and even a pilot adjustment, all in one unit. Here’s how it works: natural gas enters the valve at a variable pressure. The regulator within the 720-400 then reduces this pressure to a consistent level (typically 3.5 inches of water column for natural gas) suitable for safe and efficient operation of the furnace or boiler. This consistent pressure ensures optimal combustion by delivering the correct amount of gas to the burner. The Robertshaw 720-400 is made of aluminum for durability and weighs in at just 1.59 pounds. It’s compatible with standard 60Hz electrical systems and is commonly found in both residential and commercial natural gas furnaces and boilers. By regulating gas pressure, the 720-400 plays a vital role in ensuring the safe and efficient operation of gas heating systems.
