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Robertshaw 700-406 gas valve thermostat 24 V 3.5 in wc standing pilot

Robertshaw

Robertshaw 700-406 Gas Valve thermostat 24 V 3.5 in wc

SKU CH-P11G-9F679

A gas valve thermostat for natural gas or liquid propane with a 24 V supply, 3.5 in wc pressure and 300 000 BtuH maximum heating capacity

  • Product typeLearning Thermostats
  • Standing-pilot ignition for reliable start-up
  • 24 V control voltage fits standard systems
  • 5 in wc regulator delivers consistent pressure
  • NG/LP conversion kit included for fuel flexibility
  • 300 000 BtuH capacity suits large heating loads

Gas Valve for Natural Gas and LP

The Robertshaw 700-406 is a standing-pilot gas valve that operates on 24 V and regulates pressure to 3.5 in wc. It supports both natural gas and liquid propane with a maximum heating capacity of 300, 000 BtuH. The straight-thru flow direction suits standard furnace and boiler installations. This new component is intended for HVAC professionals and experienced DIYers replacing a worn valve.

Conversion kit and integrated regulator change setup

A factory-supplied conversion kit lets the installer switch between fuel types without sourcing extra parts. The built-in pressure regulator and outlet pressure tap simplify gas-pressure verification during commissioning. An on/pilot/off switch is included for direct pilot control. No pilot generator kit or side taps are provided, so those must be sourced separately if the application requires them.

Straightforward wiring and common pitfalls

Electrical connections use screw and spade terminals rated for 0.2 A, making wiring quick with basic hand tools. The most frequent issue is skipping the fuel-type conversion steps, which leads to incorrect manifold pressure. Forgetting to check the outlet pressure tap after adjustment is the second common error. Ensure the gas supply is clean; debris in the straight-thru path can prevent proper seating.

How it compares

Measured against everything we stock in Thermostats & Thermostat Accessories, at today’s prices. Recalculated every night.

Price $115.99
Pricier than about 68% of the 286 comparable items (median $78.49).

Specifications

Product
Brand nameROBERTSHAW
Product typeLearning Thermostats

Questions about this item

Does the 24 V gas valve require a pilot generator kit for routine maintenance?

The pilot generator kit is not included with the valve, so it must be sourced separately if the existing generator needs replacement.

What is the maximum heating capacity before the 3.5 in wc pressure regulator reaches its limit?

The valve is rated for a maximum heating capacity of 300,000 BtuH, which is the upper limit for the integrated pressure regulator.

How much current does the 24 V coil draw during continuous all-day operation?

The valve draws 0.2 A at 24 V, so power consumption and heat from the coil remain constant during sustained use.

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