Quarter Turn | Morin

Series B/C

B series - Ductile iron w/ stainless steel cylinders C series - Ductile iron w/ carbon steel cylinders Spring return and double acting actuators Quarter-turn output torques to 1,400,000 lb.in.

Features & Benefits:

  • Ductile iron housing, piston and end caps provide long product life with durable, cost effective operation.
  • Output shaft made of high strength alloy steel or 17-4PH stainless transmits torque without fatigue.
  • Sintered bronze bushings or PTFE composite on output shaft eliminate side loading of valve stem to maximize stem packing performance.
  • Chrome-plated steel piston rod provides strength and corrosion resistance for enduring high cycle applications.
  • Sintered bronze piston rod bushings provide low-friction support and precise alignment of the piston rod to increase efficiency. reduce maintenance and extend actuator life.

  • Heat-treated stainless steel thrust
    pin and rollers transfer piston force to
    17-4PH stainless steel or ductile iron yoke by rolling to reduce friction. for longer life and more efficient torque transmission.
  • PTFE guide bands ensure low-friction piston guidance during operation to protect cylinder walls from potential scoring and extend seal performance
    with a continuous cylinder wiping action.
  • Bi-directional travel stops provide accurate valve rotation adjustment.
  • ISO 5211 mounting pattern promotes easier valve adaptation by utilizing internationally recognized standards.
  • Both series B and C have been certified
    to SIL 3 ratings.
  • Actuators are rated IP66.
  • NAMUR drive slot on output shaft enables accessory-driven components to maintain a compact assembly and eliminates the need for couplings.
  • Tectyl-coated springs can be disarmed without special tools to safely and easily disassemble the actuator in the field. reducing down time and providing a
    ‘man safe’ spring.
  • Easily removable housng cover provides effortless access for internal inspection of yoke mechanism.
Technical data
Supply pressure       :   40 to 160 psig
(see torque chart. MORMC-0333)
Supply medium       :   Air or any gas compatible with materials of construction
Temperature rating
Standard range : -20°F to 210°F
Optional range : -65°F to 300°F
Angular rotation : 90 degrees
± 8 degrees

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Technical Bulletins

Morin Manual Override Options (English)

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Installation & Maintenance Instructions

Morin Actuator Models B, C, & S (English)

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Technical Data Sheets

Actuator Series B/C - imperial (English)

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Technical Data Sheets

Actuator Series B/C - metric (English)

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Technical Data Sheets

Actuator Series B/C (French)

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Technical Data Sheets

Actuator Series B/C (French)

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Technical Data Sheets

Actuator Series B/C (Italian)

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Technical Data Sheets

Actuator Series B/C (Russian)

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Technical Data Sheets

Actuator Series B/C (Spanish)

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