Quarter Turn

Morin A

A series - Carbon steel w/ stainless steel cylinders
Spring return and double acting actuators
Quarter-turn output torques to 4700 Nm / 42,000 lb.in.

Features & Benefits:

  • Carbon steel housing, piston and end caps provide long life and durable, cost-effective operation.
  • High strength alloy steel or 17-4PH stainless output shaft transmits torque without fatigue.
  • Sintered bronze or PTFE composite output shaft bushings eliminate side loading of valve stem to maximize stem packing performance.
  • Strong, corrosion-resistant chrome-plated steel piston rod for enduring high cycle applications.
  • Sintered bronze piston rod bushings provide low-friction support and precise alignment to increase efficiency, reduce maintenance and extend actuator life.
  • Heat-treated stainless steel thrust pin and rollers transfer piston force to yoke to reduce friction for longer life and more efficient torque transmission.
  • PTFE guide bands ensure low-friction piston guidance, protecting cylinder walls from scoring and extending seal performance with a continuous cylinder wiping action.
  • Bi-directional travel stops provide accurate valve rotation adjustment.
  • NAMUR drive slot maintains a compact assembly for accessory-driven components with no couplings necessary.
  • Tectyl-coated springs need no special tools to be disarmed safely and easily, reducing down time.
  • Easily removable housing cover provides easy access for yoke mechanism inspection.

General applications

For remote control of any quarter-turn application: ball, butterfly, rotary plug or damper style valves, etc. for use in chemical process, food and beverage, iron and steel, pharmaceutical, power, oil and gas, pulp and paper and textile industries.

Technical data

Supply pressure: 3 to 12 barg / 40 to 175 psig (see torque chart)
Supply medium: Air or any gas compatible with materials of construction
Temperature rating
Standard range: -29°C to 99°C / -20°F to 210°F
Optional range: -60°C to 149°C / -76°F to 300°F
Angular rotation: 90 degrees (adjustable between 82 and 98 degrees)
Mounting pattern: ISO 5211
Protection: IP66/67M
Certification: SI L3 rated

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Technical Data Sheets

Morin A Series Pneumatic Actuator (Metric) (English)

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Installation & Maintenance Instructions

Biffi Morin Models A, B, C And S Pneumatic Actuators (English)

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Operating & Safety Instructions

Morin A/B/C/S Pneumatic Actuator (Metric) (English)

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Operating & Safety Instructions

Morin Locking Accessory (Imperial) (English)

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Operating & Safety Instructions

Morin Manual Hand Pump (Imperial) (English)

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Certificates, Approvals & Qualifications

BIFFI series A B C S and HP Certificate (English)

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Technical Specification

Morin Adjustable Lock Out Device (Imperial) (English) (English)

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Technical Specification

Morin Adjustable Lock Out Device (Metric) (English) (English)

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Technical Specification

Morin Manual Override Options (Imperial) (English) (English)

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Technical Specification

Morin Manual Override Options (Metric) (English) (English)

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Reference Documents

Morin Options Code Index (Imperial) (English) (English)

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Reference Documents

Morin Options Code Index (Metric) (English) (English)

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Torque Tables

Morin Torque Tables (Metric) (English)

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Torque Tables

Morin Torque Tables (Imperial) (English)

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Certificates, Approvals & Qualifications

PED Module H H1 2019 07 (English)

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