HB series of worm gear operators excel in demanding applications, ranging from nuclear power plants to critical service flow control in hydroelectric plants. Whether utilized in manual operation or motorized with L120, or SMB electric actuators, the rugged and dependable HB offers unsurpassed quality and longevity for quarter-turn and multi-turn torque-only applications.
HB worm gear operators are used to actuate ball, plug, and butterfly valves, louver dampers, flop gates, radial gates, butterfly gates, and other devices. For manual operation, additive spur gear attachments, bevel gear attachments and handwheels are available. When driven by electric actuators, a wide range of output speeds and output torques are available to provide unparalleled versatility to meet virtually any operating requirement in a variety of environments.
With eleven product sizes covering torques to 200,000 Nm, the strongest and most reliable worm gear operator on the market delivers consistent, trouble-free performance. In production since the early 1960s, the HB series is proven reliable, over and over again.