00-410841-00028 & 00-410841-00029 — 24 V Combination Gas Valve, Electronic Ignition

24 V combination safety valve for electronic-ignition fryers, including Hobart 1HGC / 1HGD. Robertshaw 700-049 / 7000BDER-S7A: 1/2 in FPT inlet and outlet, 1/4 in CCT pilot outlet, 300,000 BTU, natural gas with LP conversion kit 51-1184.

Availability Status

Currently in production

Listed as active at US distributors as of 2026-10-20. 24 V electronic-ignition build; not interchangeable with the millivolt valves on the other pages.

Source: public distributor listing, checked 2026-10-19. Availability changes; re-check before ordering.

Compatible Models

Hobart

1HGC
1HGD

Vulcan

GRD (electronic ignition builds)

Other equipment using the same valve

Frymaster H50
Frymaster H52
Frymaster MJ50
Pitco PP10593

Cross-Reference / Interchange Part Numbers

This item is listed under the following part numbers across manufacturer documentation and distributor catalogs:

00-410841-00028
00-410841-00029
Robertshaw 700-049
Robertshaw 7000BDER-S7A
51-1184

Cross-references marked as reported come from distributor interchange tables rather than manufacturer statements. Always verify against your equipment's parts manual before ordering.

Specifications

Type	24 V combination gas valve for electronic ignition
Supply	24 V AC 60 Hz / 12 V DC
Inlet / outlet	1/2 in FPT in and out; 1/4 in CCT pilot outlet
Capacity	300,000 BTU
Maximum inlet	14 in WC
LP conversion	Kit 51-1184
Robertshaw equivalent	700-049 / 7000BDER-S7A
Regulator setpoint	Not published consistently — sources disagree (3.0 in WC vs 3.5 in WC). Verify against your unit before ordering.

What to Verify Before Ordering

These are the points that most often cause a wrong order on this specific part number. They are not generic advice.

24 V electronic ignition only — Not interchangeable with the millivolt valves on the other pages. The valve operator and the ignition module are a matched pair.

Compiled from manufacturer catalog strings and distributor listings. Verify against your own equipment's parts manual before ordering. This is not an offer or a quotation.

How the sources word it

Distributor specification. The 24 V side of the family is stated as 24Vac/12Vdc and is meant for intermittent pilot, direct spark and hot-surface ignition — not for a standing pilot with a thermopile.

Source	Wording (verbatim)	What it is	Link
PizzaOvens specification (distributor wording, not OEM)	“Nat Gas · Size 1/2" Fpt · Nat Safety · 3.5"Wc · 24Vac/12Vdc · Brand Rs Mfg# 700-049 · For Intermittant Pilot, Direct Spark, And Hot Surface.”	Voltage and ignition type, in one line.	pizzaovens.com

What it fits and where it is used

Gas safety and regulation on electronic-ignition fryers — intermittent pilot, direct spark and hot-surface ignition systems. Used on Hobart 1HGC/1HGD fryers and on Vulcan GRD electronic-ignition builds.

What it does and how it fails

A combination valve: a safety magnet held by the ignition board's flame signal, a diaphragm operator that the board opens, a pressure regulator and a gas cock in one body. This is a 24 V AC valve for electronic ignition — it is opened by the ignition board, not by a millivolt thermostat. Most 'bad valve' diagnoses are really a missing call, a weak thermopile or a dirty inlet screen.

Symptom check — is this 24 V gas valve the cause?

Symptom	This part?	Check first
Ignition sequence runs, main burner never lights	Possible — operator not pulling in	Call signal at the operator terminals, then inlet pressure
Burner lights and then drops out	Possible — safety circuit losing hold	Flame-sense signal and sensor condition
Burner stays on after the call ends	Yes — operator stuck open (safety)	Stop using the fryer; verify with the call removed before replacing anything
Valve chatters or buzzes	Possible — low operating signal	Supply voltage / millivolts, loose spade terminals, corroded ground

How to test it before you replace it

Confirm the call: at the operator terminals measure 24 V AC while the controller is calling for heat. No signal means the valve is being blamed for an upstream fault.
Measure inlet pressure with a manometer (a licensed gas fitter's job, not a multimeter job) and compare it with the maximum inlet on this record: 14 in WC.
Check the regulator setting against this record (see table) and confirm the spring matches the gas being used.
Inspect the inlet screen and the pilot outlet for debris; a blocked pilot outlet gives a flame that looks fine but does not play on the thermopile.
If the valve is being replaced, match inlet/outlet, capacity and porting — not just the footprint.

These are standard electrical and gas-side checks for the device family, not a service manual for your fryer. Work with the appliance isolated, and have gas-side work done by a qualified fitter. Where this page states a value, it is copied from the specification table above; where it does not, the reading is only meaningful against your appliance manual.

Substitutions that fit but do not work

Millivolt vs 24 V. The bodies look identical and the mounting is the same; the operator is not. Cross-driving either one destroys the operator or gives no control.
Porting / bracket variant. This record is specific about its inlets and outlets (1/2 in FPT in and out; 1/4 in CCT pilot outlet) for a reason — a standard body does not fit a GHF manifold without adapters, and adapters add leak points.
Gas type. NG and LP use the same body with a different regulator spring (Kit 51-1184 for the conversion). A valve set up for natural gas on an LP supply overfires.
Capacity. 300,000 BTU on this record; undersizing shows up as a burner that will not reach temperature, not as an obvious fault.

Related records and guides

Frequently Asked Questions

What is the difference between -00028 and -00029?

-00028 is the natural-gas build and -00029 the propane build of the same 24 V valve.

Can this replace a millivolt valve?

No. A 24 V electronic-ignition valve and a millivolt valve are not interchangeable — the ignition systems differ.

What is the regulator setpoint?

Published sources disagree (3.0 in WC vs 3.5 in WC). Confirm against the data plate of your fryer rather than relying on a catalog value.

China Sourcing Notes

Capillary, millivolt and high-limit thermostats in these part families are produced in volume in China. Public supplier directories list manufacturers concentrated in specific industrial clusters: Zhongshan (Guangdong) for capillary, millivolt and deep-fryer thermostats; Wenzhou (Zhejiang) for capillary, gas, immersion and mechanical thermostats with OEM/ODM capability; and Jinan (Shandong) for gas-valve and thermostatic gas-control components. When sourcing these parts from China, verify: dimensional drawings, sensing-bulb and capillary specifications, temperature accuracy, electrical ratings, cycle-life testing and applicable safety certifications (CE / CQC / UL). A high-limit safety thermostat must not be substituted on the basis of physical fit alone.

Sources & Compilation Note

Compiled from ITW/FEG OEM parts listings, distributor catalogs, and Robertshaw 700-049 / 7000BDER-S7A specification data.

Part numbers and specifications are reproduced as published by the sources listed above. This page is a reference compilation for identification purposes. Last compiled: 2026-10-31.