GB52SC/GB53SC Series Level Actuators

Conoflow’s Pneumatic Lever Actuators are rugged and powerful units used to automatically position dampers, louvers, variable pitch fans and to make various mechanical adjustments to process machinery. Low profile (only 18” high) requires less headroom. A sturdy ductile iron yoke with large mounting base provides rigid mounting. The steel lever arm has eight take-off positions for stroke flexibility.

The Lever Actuator is a combination piston actuator and lever mechanism. These actuators are available in piston diameters of 6” and 8” with a maximum lever travel of 12”. Force produced is a function of the supply pressure which may be varied from 20 to 100 PSI (137 to 690 kPa) and the lever take-off position.

The actuator assembly is completely enclosed to protect all moving parts from corrosive atmospheres and adverse weather conditions. All exterior parts are coated with a corrosion-resistant paint.

Materials of Construction:

• Cylinder: Aluminum
• Piston: Aluminum
• Stem: 303 Stainless Steel
• Lipseals: Buna “N”
• Yoke and Base: One Piece Ductile Iron
• Lever: Steel
• Fulcrum Arm: Steel
• Lever and Fulcrum Pins: Steel

GB52SC (1)

• Piston Diameter: 6”
• Effective Area: 28.5 sq. in. (183.37 CM2)
• Air Consumption w/Positioner:
  • Static: 0.30 SCFM (0.008 m3/min) at 40 PSI (275 kPa) supply
  • Dynamic: 5.0 SCFM (0.142 m3/min) (max) at 100 PSI (690 kPa) supply
• Positioner: Suitable for all standard instrument air signals; direct or reverse acting, top or bottom loading (2)
• Standard Accessories: Integrally piped cushion-loading regulator and gauge (for units with positioners only)
• Approximate Shipping Weight: 30 lbs. (14 Kg)

GB53SC (1)

• Piston Diameter: 8”
• Effective Area: 50 sq. in. (322.58 CM2)
• Air Consumption w/Positioner:
  • Static: 0.30 SCFM (0.008 m3/min) at 40 PSI (275 kPa) supply
  • Dynamic: 5.0 SCFM (0.142 m3/min) (max) at 100 PSI (690 kPa) supply
• Positioner: Suitable for all standard instrument air signals; direct or reverse acting, top or bottom loading (2)
• Standard Accessories: Integrally piped cushion-loading regulator and gauge (for units with positioners only)
• Approximate Shipping Weight: 40 lbs. (18 Kg)

NOTES:

1) For catalog number make-up, refer to Control Engineering Data Sheets.
(A) Lever type actuators utilize clevis and fulcrum with 8 take-off positions. Lower stem guide on base assures constant alignment.
(B) Lever Actuator mounting is base type with four 1/2” holes on a 3-3/4” bolt circle.
(C) Maximum lever travel is 12”
2) For proper positioner selection, refer to positioner data sheets.