ASCO 8266C239V Solenoid Valve 3/4 Inch Viton W Bypass

ASCO 8266C239V is a 3/4-inch, two‑way, normally closed solenoid valve designed for fuel oil service, with a brass body, Viton seals and disk, and an integrated bypass. It uses 3/4" NPT connections and is rated for operating pressures from 0 to 160 psi, making it suitable for burner and boiler fuel-oil supply lines in HVAC and light industrial equipment. This direct-acting valve shuts off fuel flow when de-energized, providing reliable isolation in control systems and enabling bypass operation for start‑up or pressure relief without subjecting the main line to full shutoff. The Viton elastomers offer chemical compatibility with common mineral-based fuels, contributing to long service life in demanding environments. Typical applications include controlling fuel oil to burners in residential, commercial, and light industrial heating equipment, where a compact, brass-bodied valve with robust elastomer seals and an integral bypass is preferred.