Choosing the right millivolt gas valve is essential for safe, efficient deep frying. The following selections are tailored for deep fryers and related commercial equipment, focusing on reliability, compatibility, and straightforward installation. This guide highlights five top options with details to compare performance, installation ease, and compatibility with common Robertshaw and Frymaster systems.
| Product | Brand | Key Feature |
|---|---|---|
| MCAMPAS 700-506 Millivolt Gas Valve Replacement | MCAMPAS | 7″–13.8″ WC inlet, 4″ outlet, 180k–360k BTU compatibility |
| Hicello Replacement for Robertshaw 700-506 | Hicello | Direct 700-506/700-503 compatibility, includes reducers for easy mounting |
| 700-506 Gas Valve for Robertshaw Series | gohantee | Wide gas compatibility, 3/4″ NPT, 300k BTU capacity |
| Fryer-Combo Gas Valve Control Imperial Part# 1173 | Endurance Pro | 250–750 millivolt range, 3/4″ NPT inlet/outlet, not China-made |
| PRYSM Robertshaw 700-506 Compatible Valve | Prysm | Extensive compatibility, multiple part-number replacements, 3/4″ NPT |
Below are five carefully chosen options designed to suit deep fryers and related commercial fry equipment. Each entry includes a quick summary of compatibility, operating range, and installation notes to help operators select the best match.
MCAMPAS 700-506 Millivolt Gas Valve Replacement

The MCAMPAS replacement valve is designed as a direct match for Robertshaw’s 700-506 family, including 700-503, 700-502, and 700-504 variants. It operates within 250 to 750 millivolts to deliver precise control and safety for deep fryers. The valve supports natural gas inlet pressures from 7″ to 13.8″ WC and a fixed outlet around 4″ ± 0.3″ WC, delivering a flow suitable for 180,000 to 360,000 BTU applications. This makes it a solid option for fry stations with milivolt controls and standard pilot systems.
Installation note: Match the 3/4″-14 NPT fittings and ensure proper gas type compatibility (natural gas). The unit is a typical replacement for home and light commercial fryers using Robertshaw 700-series valves.
Hicello Replacement for Robertshaw 700-506

The Hicello 700-506 valve is built as a compatible replacement for the Robertshaw 700-506, along with several related 700-series models. It is designed for millivolt safety operation and is intended for use with natural gas in furnaces, water heaters, and commercial fryers. The product emphasizes durable materials and alignment with OEM specifications. It also includes two reducer bushings (3/4″ x 1/2″) to simplify pipe-mount conversions, helping installers adjust for different piping layouts.
Installation note: Confirm thread sizes and ensure the valve seat and pilot connections align with existing piping for a secure seal and proper pilot operation.
700-506 Gas Valve For Robertshaw Series

This gohantee valve is designed as a direct replacement for the 700-506 series, emphasizing compatibility with natural, manufactured, and mixed gas types. Rated for 300,000 BTU in many installations, it features a 3/4″ NPT inlet/outlet arrangement and robust construction suitable for fryers and other commercial appliances using millivolt controls. The valve targets flexible deployment across residential and light commercial kitchens where a 700-series valve is in use.
Note: Check the exact model fit and ensure the valve’s max inlet pressure (up to roughly 14″ WC) aligns with the system’s supply to avoid undersizing the control valve for high-demand fryers.
Fryer-Combo Gas Valve Control Imperial Part# 1173

The Endurance Pro Fryer-Combo valve is presented as a robust option for fry stations, claiming a 250 to 750 millivolt operating range and a 3/4″ NPT inlet/outlet. The product emphasizes a non-Chinese manufacturing origin and presents as a ready-to-install replacement part for Frymaster and related deep-fryer systems. This valve suits commercial kitchens seeking a dependable, not-China alternative for millivolt controls and pilot systems.
Installation note: Verify compatibility with your specific Frymaster or Robertshaw control layout, ensuring proper pilot line connections and gauge alignment for safe operation.
PRYSM Robertshaw 700-506 Compatible Valve

The Prysm valve is promoted as compatible with a broad set of Robertshaw 700-series parts, including 700-506, VS810A1054, and related numbers. It lists 3/4″ NPT plumbing connections and a pressure regime suitable for natural gas, manufactured gas, LP gas, and gas-air mixtures. The model is designed to integrate with LENNOX, FRYMASTER, and other major systems, presenting a flexible option for varied kitchen installations and service upgrades.
Considerations: Cross-reference part compatibility with your current control board and ensure that the valve’s electrical and pilot guidance matches your existing setup to prevent pilot or ignition faults during operation.
Buying Guide: Key Purchase Considerations
- Compatibility and model alignment: Confirm the exact valve model numbers (for example, 700-506) and verify that the valve is listed as a direct or compatible replacement for your equipment. Mismatches can lead to pilot or shutoff failures.
- Millivolt operating range: Most fry-related valves operate in the 250–750 millivolt range. Choose a valve within the range your control system expects to ensure reliable ignition and safe operation.
- Gas type and pressure ratings: Ensure the valve supports the gas type in your facility (natural gas, manufactured gas, LP gas, etc.) and matches the inlet/outlet pressure requirements to prevent improper gas flow or flame instability.
- Thread size and fittings: Commonly 3/4″ NPT for millivolt valves. Verify inlet/outlet connections and consider reducer bushings if pipe sizing differs from the original valve.
- Durability and OEM alignment: Opt for valves manufactured to meet or exceed OEM specifications, especially in high-use fry stations where reliability matters for safety and consistency.
- Installation ease: Some replacements include additional mounting accessories (such as reducer bushings) to simplify installation. Evaluate whether the supplier provides these extras and whether installation requires professional service.
- Brand ecosystem and availability: Large brands (Robertshaw, Frymaster, LENNOX) offer broad compatibility and easier future replacements. Consider availability for ongoing maintenance and warranty considerations.
- Non-China manufacturing notes: Some buyers prefer parts explicitly stated as not Made in China, seeking perceived quality and reliability for commercial kitchens.
When selecting a valve for a deep fryer, prioritize compatibility with your existing control system, verify gas type and pressure requirements, and ensure that installation can be performed safely by qualified personnel. The five options presented here offer a spectrum of compatibility and installation features suitable for common restaurant fryers and related equipment.