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Honeywell VS8421D8034 Millivolt Gas Valve 750mV LP 3/8 NPT Vent-Free Fireplace Control
- Regular price
- $1,249.00
- Sale price
- $1,249.00
- Regular price
-
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Product Description P/N: VS8421D8034
Description
The Honeywell VS8421D8034 is a millivolt gas valve designed for controlling gas flow in vent-free fireplace and space heating systems. It operates with a 750 mV system and supports precise regulation of LP gas with adjustable pressure settings. This valve is used to ensure consistent ignition, flame stability, and safe gas supply management in heating applications.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Honeywell |
| Category | Valves |
| Part Number | VS8421D8034 |
| Subcategory | Gas Valve |
| Series | VS8421 |
| Application | Vent-free fireplace and space heating |
| Fuel Type | LP (Liquefied Petroleum Gas) |
| Voltage | 750 mV |
| Body Pattern | Straight-through |
| Inlet/Outlet Size | 3/8 in. NPT x 3/8 in. NPT |
| Pilot Connection | 7/16-24 UNS |
| Pressure Regulator | High/Low Adjustable |
| Pressure Setpoint | 10.0 in. wc High / 4.9 in. wc Low |
| Operating Temperature | 0°F to 175°F (-18°C to 79°C) |
| Mounting | 0 to 90 degrees orientation |
| Certifications | AGA, CGA (File no. C2030022) |
| Capacity | 60,000 Btuh |
| Weight | 2.00 lbs |
Information About VS8421D8034
The VS8421D8034 is part of Honeywell’s VS8421 series, developed for millivolt-controlled gas systems in residential heating equipment. It features a straight-through body design with integrated pressure regulation for both high and low settings, allowing accurate control of gas flow. The valve is compatible with vent-free fireplaces and space heaters, supporting thermocouple-based safety systems and standard NPT connections for installation. It is typically used in LP gas applications where stable flame control, safety shutoff, and efficient combustion are required.
Key Features:
- Millivolt operation: Uses 750 mV system for reliable control without external power.
- Adjustable pressure regulator: High/low settings enable precise gas flow control.
- Straight-through body design: Supports efficient gas flow with minimal pressure drop.
- LP gas compatibility: Designed specifically for liquefied petroleum gas systems.
- Thermocouple connection: Integrates with ODS safety systems for flame monitoring.
- Standard NPT connections: 3/8 in. inlet and outlet for easy installation.
- Wide mounting flexibility: Can be installed from 0 to 90 degrees in multiple orientations.
- Certified design: Meets AGA and CGA certification standards for safety compliance.
The VS8421D8034 delivers the reliability and precision required for safe gas flow control in vent-free fireplace and heating system applications.
Description
The Honeywell VS8421D8034 is a millivolt gas valve designed for controlling gas flow in vent-free fireplace and space heating systems. It operates with a 750 mV system and supports precise regulation of LP gas with adjustable pressure settings. This valve is used to ensure consistent ignition, flame stability, and safe gas supply management in heating applications.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Honeywell |
| Category | Valves |
| Part Number | VS8421D8034 |
| Subcategory | Gas Valve |
| Series | VS8421 |
| Application | Vent-free fireplace and space heating |
| Fuel Type | LP (Liquefied Petroleum Gas) |
| Voltage | 750 mV |
| Body Pattern | Straight-through |
| Inlet/Outlet Size | 3/8 in. NPT x 3/8 in. NPT |
| Pilot Connection | 7/16-24 UNS |
| Pressure Regulator | High/Low Adjustable |
| Pressure Setpoint | 10.0 in. wc High / 4.9 in. wc Low |
| Operating Temperature | 0°F to 175°F (-18°C to 79°C) |
| Mounting | 0 to 90 degrees orientation |
| Certifications | AGA, CGA (File no. C2030022) |
| Capacity | 60,000 Btuh |
| Weight | 2.00 lbs |
Information About VS8421D8034
The VS8421D8034 is part of Honeywell’s VS8421 series, developed for millivolt-controlled gas systems in residential heating equipment. It features a straight-through body design with integrated pressure regulation for both high and low settings, allowing accurate control of gas flow. The valve is compatible with vent-free fireplaces and space heaters, supporting thermocouple-based safety systems and standard NPT connections for installation. It is typically used in LP gas applications where stable flame control, safety shutoff, and efficient combustion are required.
Key Features:
- Millivolt operation: Uses 750 mV system for reliable control without external power.
- Adjustable pressure regulator: High/low settings enable precise gas flow control.
- Straight-through body design: Supports efficient gas flow with minimal pressure drop.
- LP gas compatibility: Designed specifically for liquefied petroleum gas systems.
- Thermocouple connection: Integrates with ODS safety systems for flame monitoring.
- Standard NPT connections: 3/8 in. inlet and outlet for easy installation.
- Wide mounting flexibility: Can be installed from 0 to 90 degrees in multiple orientations.
- Certified design: Meets AGA and CGA certification standards for safety compliance.
The VS8421D8034 delivers the reliability and precision required for safe gas flow control in vent-free fireplace and heating system applications.