Gearboxes - Quarter-Turn - HBC series
Product Brand
Gearboxes - Quarter-Turn
About this product

The Flowserve Limitorque HBC series of worm gearboxes is designed for quarter-turn butterfly, ball, and plug valve applications as well as quarter-turn and multi-turn dampers.

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  • Broad application versatility provided by ability to actuate a wide range of devices, both manually or motorized, at a considerable range of output speeds and torque
  • High strength and durability provided by ductile iron housing and roller bearing supported shafts and drive sleeve 
  • Weatherproof, temporary submersion, and buried services available
  • Splined valve shaft adapter
  • Nuclear-qualified, with SMB actuators or as stand-alone gearboxes
  • Self locking gearing
  • Increased uptime due to bronze worm gear paired with alloy steel worm shaft
  • Lower maintenance costs due to heavy-duty construction; proven in use for more than 50 years to be rugged and dependable
  • Ease of operation made possible by valve position pointer, which makes at-a-glance position checking easier than ever

Torque Rating Range: Torque output to 93 000 ft-lb (126 204 Nm)

Protected against the ingress of water and dust

Suitable for temporary submersion to IP67 and IP68

Buried Service
Suitable for in-ground installation

Suitable for inside containment, safety related service

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