Honeywell VS8421D8034 Millivolt Gas Valve 750mV LP 3/8 NPT Vent-Free Fireplace Control Circuit Breaker enabling flexible configuration and future

enabling flexible configuration and future upgrades

Rolling Diaphragm Design: Provides long service life with reduced hysteresis and smooth actuator movement

and a fixed terminal block for secure and organized signal connections

Adjustable switching frequency: Configurable between 1 and 16 kHz

Honeywell VS8421D8034 Millivolt Gas Valve 750mV LP 3/8 NPT Vent-Free Fireplace Control Circuit Breaker enabling flexible configuration and futureDescription 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