C&K South - OEM Products

Limitorque Valve Actuators

B320 Bevel Gearbox (phasing out - replaced with V Series)

The Limitorque B320 series of bevel gear operators delivers efficient and dependable operation for multi-turn applications. Suitable for manually operated valves and gates or motorized operation with Flowserve Limitorque MX, L120 and SMB series electric actuators, the B320 series provides versatility to meet any required operating condition. For manually operated valves and gates, the B320 operators can be driven by handwheels, chainwheels or wrench nuts. An optional spur gear attachment is available to further reduce the required input torque or rim pull effort. With five product sizes covering torque ranges to 8 000 ft-lb and 325 000 lb of thrust, there is a B320 product suited to virtually any multi-turn application.

Features and Benefits


  • Rugged cast iron gear housings

  • Ball bearing-supported bevel pinion and bevel gears

  • Removable, bronze alloy stem nut for mating to the valve stem

  • Adaptable to Flowserve Limitorque electric actuators


Common Applications

Boiler Circulation, Decoking, Desalination, Filtration, Gas Production, Heavy Oil, Oil Sands and Shale, Water Supply and Distribution (water), Nuclear Service, Petroleum Production and Refining, Sewage Collection and Treatment, Tank Farm Transfer, Molten Salt Transfer