always verify your specific furnace model's wiring diagram

To ensure long-term reliability in high-temperature environments

What causes a pressure switch to stay open during a call for heat

Unlike passive vents that rely on natural wind pressure

ASCO JB8214250VICSA Solenoid Valve 320735-701 always verify your specific furnaceThe ASCO JB8214250VICSA Solenoid Valve is a premier 1 inch 2 way normally closed fuel gas shutoff valve, specifically engineered for high performance combustion systems. Featuring a rugged aluminum body and NBR seals, this 120Vac industrial gas safety valve provides a substantial flow capacity of 21 Cv, supporting up to 1,132,300 BTU hr. Its unique internal pilot operated design and double disc overtravel system ensure redundant, leak tight shutoff