Robertshaw Gas Valve 24V 300K BTU 700-406

The Robertshaw 700-406 is a 24 volt gas valve rated to approximately 300,000 BTU per hour.

At 300,000 BTU this valve suits larger commercial heating appliances: unit heaters, larger boilers, make-up air units, and commercial furnaces.

Valve capacity is determined at a stated pressure drop, and this is worth understanding when selecting. A valve's rating assumes a particular inlet pressure and an acceptable drop across the valve; supplied at lower inlet pressure, or with a longer or smaller gas line than the installation assumed, the same valve passes less.

This is why gas pressure must be verified at commissioning rather than assumed. Inlet pressure is measured at the valve with the appliance running at full rate and, importantly, with any other gas appliances in the building also operating. A supply adequate for one appliance alone may fall below specification when several draw simultaneously, and the resulting underfiring is intermittent and difficult to diagnose after the fact.

Manifold pressure is then set to the appliance's specification, not to a generic figure, since it determines the actual firing rate.

Confirm gas type, connection sizes, capacity, and control voltage against the appliance before fitting.

Applications include commercial gas heating equipment, unit heaters, boilers, and make-up air units.

Brand

Robertshaw

SKU

700-406

Category

Gas Valves

Weight

2.15 lbs

Dimensions

5.80" x 4.80" x 3.50"

Price

$160.00

Availability

In stock

Rating

4.6 / 5.0