Honeywell VR425VA50341000 Gas Combination Valve

1. General Description

The Honeywell VR425VA50341000 Gas Combination Valve is a special valve designed for precise gas flow control. People use it in modern heating and combustion systems. It combines gas regulation, safety shutoff, and manual control functions in one compact design.

This manufacturer designs this valve for industrial and commercial gas-fired boilers, furnaces, and water heaters. It keeps the flame stable and saves energy.

The Honeywell VR425VA5034-1000 works well with advanced control systems and flame detectors. This includes the Honeywell flame detector and the FS24X UV/IR flame detector. It provides excellent flame detection, fast response, and reduces false alarms. With sophisticated software algorithms and dual microprocessors, these systems provide fire detection performance combined with reliability and safety.

2. Specifications

l Type: VR425VA50341000, servo-regulated combination valve

l Supply Voltage: 230 V AC, 50/60 Hz, 32 W

l Connection / Port Size: Rp 1″ (1-inch)

l Maximum Pressure (Pmax): 100 mbar

l Protection / Enclosure Rating: IP40

Class: CI.A Gr2

l Series Family: VR400 / VR800 “Class A” SERVO REGULATED COMBINATION VALVES (VR425 is the 1″ line model)

3. Application

The Honeywell VR425VA50341000 is used in:

l Gas-fired boilers used in industry and commerce need precise control of gas flow. This control is essential for safety and efficiency.

l Atmospheric gas burners ensure consistent combustion and safety shutoff performance.

l Incinerators, melting furnaces, and large heating systems require accurate gas modulation under varying loads.

The system works with Honeywell flame detectors and IR/UV sensors. It can detect hydrocarbon and non-hydrocarbon fires from over 200 feet away. This ensures top fire detection performance.

This is suitable for gas solenoid valve assemblies, air damper actuators, and pressure switches. It ensures full automation and safety in burner systems.

4. Similar Part Numbers

l VR420AB1002-0000

l VR425AB1007-0000

l VR425VE5022-0000

l VR434VA5009-1000

5. Main Business of Burner Accessories

Our company focuses on burner parts from Honeywell, Siemens, Kromschroder, Dungs, RIELLO, BRAHMA, and MADAS. We provide many products. These include gas solenoid valves, flame detectors, ignition transformers, air damper actuators, and pressure switches.

1) Program Controllers

l SIEMENS: LOA24, LME21/22, LMV electronic ratio control series, LMV27, LMV73, LMV50, LMV52, LAL1…, LGB21/22, LMG21/22, LEL1…, LGK16, LAE1, LFE1, LEC1, etc.

l HONEYWELL: EC7800/RM7800 control system, EC7823A1004, RM7823A1016, EC7850A1080, EC7890B1010, EC7890A1011, RM7890A1015, R4343E/F switch controllers, RA890 series, TBC2800A, TFI812.2, MMI813.1, MMI962.1, DLG976, TMG740-3, etc.

l Kromschroder: IFD258, IFS258, IFS244, IFW15, BCU control system, PFU778, etc.

2) Flame Detectors

The package includes the Honeywell VR425VA5034-1000 flame detector. It also has the FS24X UV/IR flame detector. These IR flame detectors respond quickly and have a wide field of view. Users can choose different output options.

Brands: Siemens, Honeywell, BRAHMA, RIELLO — supporting UV, IR, and UV/IR flame detection with optimal false alarm rejection.

3) Ignition Transformers

Brands include FIDA, COFI, DANFOSS, Honeywell, Kromschroder, and Weishaupt — reliable for stable ignition and continuous flame holding. 

4) Gas Solenoid Valves

We offer Honeywell gas solenoid valves, along with DUNGS, SIEMENS, BRAHMA, and MADAS. These valves come in single-stage, two-stage, and combination systems for accurate fuel delivery.

5) Air Damper Actuators

Honeywell MT4000, MODUTROL series, V4055A1114, and Siemens SQN/SQM models — ensuring smooth and accurate air-fuel ratio control.

6) Pressure Switches

DUNGS, Kromschroder, Honeywell, and Azbil offer reliable pressure monitoring in combustion and safety control applications.

7) Gas Pressure Regulators

MADAS RG/2MC and Fiorentini 301/311 series — designed for stable downstream pressure regulation across industrial gas systems.

For more items you are interested in, please refer to the following:

Honeywell SmartLine STT750 Temperature Transmitters

SmartLine STG700 Series STG74L-EIH000-1-C-DHC transmitters

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