Bettis HD-Series Scotch Yoke Hydraulic Valve Actuator

Bettis

Bettis HD-Series Scotch Yoke Hydraulic Valve Actuator

Bettis

A hydraulic,scotch yoke, heavy duty, cost effective hydraulic actuator to remotely open and close valves.

Specifications

Power Source
Hydraulic
Product Type
Hydraulic Actuator
Actuation
Double-acting
Certifications
ATEX, IP-6X, IP-X6, IP-X7M, Lloyd⃡s Approval

This product is only intended for use in large-scale fixed installations excluded from the scope of Directive 2011/65/EU on the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS 2).
Control Type
On/off, ESD
Valve Type
Ball, butterfly, and plug valves, louvers and dampers, and other quarter-turn mechanisms
Operating Temperature
Standard -29°C to 93°C (-20°F to 200°F)
Torque/Thrust
5,687 Nm (50,331 in-lbs)
Operating Pressure
Up to 17 Bar (250 psig) or hydraulic pressures up to 207 Bar (3,000 psig)

Features

  • Double-acting Actuator are available with guaranteed minimum output torques to 50,331 lbs-in (5,687 Nm)
  • Fail safe spring-return models produce guaranteed minimum spring ending torques to 18,044 lbs-in (2,039 Nm)
  • Bettis Actuator are available with a variety of manual overrides designed to deliver full rated torque output without assistance from an external power source
  • For special applications and/or extreme environments, Bettis engineers have developed a wide variety of optional trims with special design criteria
  • All double-acting Actuator shall be of the balanced scotch-yoke design and be capable of producing a torque output at both the start and end positions (0 and 90 degrees) of at least 1 1/2 times the minimum torque output
  • Power cylinders and spring cartridges shall be mounted rigidly to the actuator housing using metal-to-metal interfaces and weather tight seals
  • Shall utilize permanently lubricated, high performance yoke trunnion and piston rod bearings
  • All bearings shall be sized and material selected to provide maximum service life while performing as sacrificial protectors of critical sealing and structural components
  • Factory installed instrument tubing shall be type 316 stainless steel with corrosion resistant steel fittings
  • Actuator torque outputs shall be guaranteed minimum values auditable to type test of each model
  • Housing, spring cartridge and non-pressurized cylinder elements shall be environmentally protected by a normally closed vent system facilitating a positive pressure purge during operation per BSK 2661, if applicable

Documents & Drawings