ASCO HOV1B Series HydraMotor Valves

Brand: ASCO

The ASCO Series HOV1B are bronze-bodied safety valves electro-hydraulically operated to provide reliable on-off control of fuel oil.

The valvesĀ“ spring-loaded, stem-guided PTFE seat opens within 9 seconds of power application and closes within 1 second of power interruption. The valves are agency-approved for fuel oil safety shutoff.

The HOV1B Series consist of a flexible two-piece actuator and the valve body design that is ideal for OEMs who want both actuator and body as a set, and for end users and distributors who want to minimize inventory by mixing/matching separate actuators and valve bodies.
  • Self-contained, hermetically sealed, pull-type electrohydraulic actuator has motor/pump unit immersed in oil, reducing wear and enhancing reliability.
  • Rugged construction and broad ambient temperature range (-40F to 150F) permit use in challenging environments.
  • Type 1 General Purpose enclosure standard, optional Type 4, 7 Watertight and Explosion-proof enclosure for hazardous locations.
  • H118 Series offers 1-inch to 3-inch NPT and 4-inch flange end connections flow range from Cv 124 to 510 and operating pressures from 4 psi to 20 psi.
  • Visual indication of valve open & closed position is standard.
  • Optional valve seal over travel and electrical interlock proof of closure switch available.
  • Mountable in any position for installation flexibility.
  • UL Listed, FM Approved, CSA Certified.



Body Material

  • Cast Iron


  • Over 14.0 Cv


  • 2-Way - 2/2 Normally Closed

Maximum Differential, Maximum Operating Pressure

  • Vacuum to 150 psig


  • Natural Gas

Operating Environment

  • Hazardous, Indoor, Outdoor

Pipe / Port Size

  • 1, 1-1/4, 1-1/2, 2, 2-1/2, 3

Port Type

  • Flange, Female NPT

Standards & Regulations

  • CSA, FM, Typical 1, Typical 4, Typical 7, UL

Valve Actuation

  • Motorized


  • 120 AC, 230 AC
show more