Honeywell Gas valve VS8620C1011B

This is a gas valve with an electromagnetic actuator, designed for automatic control of gas supply in heating systems and gas equipment. It operates on supply voltage from 24 to 230 V and has connection threads ranging from Rp 1/2" to 2". The valve is compatible with natural and liquefied gas, and its body is made of durable materials resistant to temperature and pressure fluctuations. It features fast response and high sensitivity, along with a compact design and minimal maintenance requirements. It is part of the Honeywell VS8620 series and is suitable for use in domestic and commercial gas boilers, atmospheric burners, and heat generators.

Valves of this type are selected by brand and series, connection size (typically Rp 1/2" to 2" or flanged), coil voltage (commonly 230 V or 24 V AC/DC), and internal function. They may be single or double solenoid, slow-opening, servo-regulated, or integrated into a multiblock with a filter and pressure regulator. Before ordering, verify the existing valve's connection size and coil voltage, and determine whether the application requires a slow-opening or fast-opening version. The coil is often replaceable separately from the valve body.

Common field failures include coil burnout, leaking valve seat, drifting outlet pressure, and a seized servo regulator. A coil burnout may cause the valve to fail to open or close. A leaking seat can allow gas to pass unintentionally, while drifting outlet pressure may lead to unstable burner operation. A seized servo regulator can prevent proper gas flow modulation. Check the coil continuity, seat sealing, and regulator movement.