Quarter Turn


The BIFFI PHW Power Hand Wheel series has been engineered and manufactured to provide easy and quick operation of pipeline valves equipped with a gear reducer instead of the operation of turning manually the gear reducer’s hand-wheel.

Features & Benefits:

  • Anodized aluminium body and covers provides light weight together with compact overall dimensions.
  • Simplicity of construction and ease of use are at the top of design and construction parameters.
  • High torque and speed performance.
  • All gearing running in the oil bath which allows global high and constant efficiency and low power consumption.
  • Manual operation by hand-wheel with engagement lever an automatic disengagement in case of motor rotation. The handwheel does not rotate when motor is running.
  • Local indication of valve position by a device mechanically connected to the valve stem or, upon request, local dial indicator or remote indication by electrical switches
  • Weatherproof as standard (IP 68 according to IEC 529)
  • Explosion proof protection available in case of requirements for electrical components (limit switches, position transmitters, solenoid valves, etc)
  • Mechanical stops available on request
  • Supply connections with quick connectors and protecting Plugs


Power Hand Wheel Unit is designed for the operation of linear and quarter turn valves on pipelines where power source (Electric, Pneumatic, Hydraulic) is not available.


Ambient Temperature: from -30°C to 80°C
Oil Flow rate into the range: from 10 l/min to 60 l/min
Supply Medium: Mineral oil
Oil Max Flow rate(for 140 bar max oil pressure): 70 l/min
Oil Supply pressure into the range: from 25 barg to 170 barg
Output torques (without bevel gear): up to 1200 Nm
Max. Supply pressure (for intermittent duty): 200 barg
Speed (without bevel gear): up to 144 rpm (higher speeds on request)

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Technical Data Sheets

PHW Power Hand Wheel (English)

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Certificates, Approvals & Qualifications

PED Module H H1 2019 07 (English)

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