36C03-333 – GAS VALVE (STANDING, FAST, 1/2, SIDE TAP)

White-Rodgers 36C Series universal combination gas valve for standing-pilot heating equipment, 24 VAC, single stage with a fast-opening characteristic. Pipe size is 1/2″ inlet x 3/4″ outlet with straight-through flow, and this model includes side taps, inlet and outlet pressure taps, a reducer bushing kit and an LP conversion kit. The line-interrupter design uses a standard 30 mV thermocouple and the regulator is factory set at 3.5″ W.C. for natural gas. The manufacturer states this valve is not for HSI, DSI, intermittent or proven-pilot systems.

Specifications published by the manufacturer. Source: manufacturer documentation.

Specs

• SeriesWhite-Rodgers 36C Universal Standing Pilot
• Ignition SystemStanding pilot with thermocouple line interrupter - NOT for HSI/DSI/intermittent/proven pilot
• Voltage24 VAC, 60 Hz
• Stages / Opening1-stage, fast open
• Pipe Size (inlet x outlet)1/2" x 3/4" NPT, straight through
• Electrical Rating0.23 A
• Regulator Setting3.5" W.C. natural gas
• Natural Gas Adjustment Range2.5" - 5.0" W.C.
• LP Adjustment Range7.5" - 12.0" W.C.
• Capacity (1" drop, natural)230,000 BTU/hr
• Side TapsYes
• IncludedLP conversion kit and reducer bushing kit
• Pilot Gas ConnectionCompression fitting for 1/4" OD tubing
• Maximum Inlet Pressure1/2 PSI (14.0" W.C.)

Cross-reference numbers

This part replaces the following OEM and aftermarket numbers:

• Honeywell VR8200A2744
• Honeywell VR8300A3500
• Honeywell V800A1070
• Honeywell V800A1484
• Robertshaw 700-402
• Robertshaw 700-408
• Robertshaw 720-402
• Robertshaw 1200BGVE
• Robertshaw 1200BGVEM
• Robertshaw 1210BGVE
• Robertshaw 1210BGVEM
• Lennox 10P5001
• Carrier 1149781
• York 52537065000
• Nortek 6245350
• Trane X13130431010
• Coleman 7700-346
• Coleman 7700A346
• Coleman 8631-326

Not sure if your number matches? Call (214) 340-9421 or bring the old part in — bench-testing is free.

Can I put any 24 volt gas valve on my furnace?

No. The ignition system has to match. A standing pilot valve, an intermittent pilot valve and an HSI or DSI valve are built differently inside, and the manufacturers state plainly that they are not interchangeable. A standing pilot valve has a pilot outlet and a thermocouple circuit. A hot surface ignition valve has no pilot at all and expects the board to prove flame through a sensor. Substituting one for the other either will not run, or runs without proving flame, which is the part that matters.

What is the difference between 24 volt and millivolt?

A 24 volt valve needs a transformer and a control circuit. A millivolt valve runs on roughly 750 millivolts generated by a thermopile sitting in the pilot flame, with no outside power at all. They look similar on the shelf and they are not swappable. If the appliance has no transformer anywhere in it, it is millivolt.

Single stage or two stage?

A two stage valve has two regulator adjustments and two 24 volt hot terminals so the board can fire low then high. Hang a single stage valve on a two stage furnace and you lose low fire and usually pick up board faults. Bring the old valve or the furnace model number.

Can I convert a natural gas valve to LP?

Only with the manufacturer's kit for that furnace, and the kit is more than a spring - you replace every burner orifice and reset the regulator. Ballpark manifold pressure is about 3.5 inches water column on natural gas and about 10 inches on LP high fire, but the rating plate is the number that counts. Most of DFW is on Atmos natural gas, and LP mostly turns up out past the county lines.