TRIAC A-T Controls 2R850SR Series 2R Pneumatic Actuator

Description:

The TRIAC A-T Controls 2R850SR Series 2R Pneumatic Actuator is used in automated quarter-turn valve systems to provide spring-return pneumatic actuation for industrial process valves. Commonly installed on ball valves and butterfly valves in water treatment facilities, chemical processing plants, food and beverage production lines, power generation systems, and industrial process piping where fail-safe valve operation is required. Maintenance teams and system integrators use this actuator for valve replacement, automation upgrades, preventive maintenance, and process control retrofits.

Applications:

The TRIAC A-T Controls 2R850SR Series 2R pneumatic actuator is commonly used in industrial automation environments including water and wastewater treatment, chemical processing, oil and gas facilities, pharmaceutical manufacturing, and commercial HVAC systems where dependable spring-return quarter-turn valve actuation is essential. Its ISO 5211 valve mounting and NAMUR accessory interface allow integration with solenoid valves, limit switch boxes, and positioners for automated process control.

Technical Specifications:

• Manufacturer: TRIAC A-T Controls
• Model / Part number: 2R850SR
• Product type: Pneumatic actuator
• Series: 2R
• Actuator type: Rack-and-pinion pneumatic actuator
• Operation: Spring return (fail clockwise)
• Actuator size: 850
• Torque output: 8,500 in-lb
• Air supply pressure: 40–150 PSI
• Maximum working pressure: 150 PSI
• Rotation: 100° with dual adjustable travel stops (±5°)
• Mounting: ISO 5211 / DIN direct mount
• Accessory interface: NAMUR / VDI-VDE 3845 compatible
• Housing material: Hard-anodized aluminum
• Operating temperature: -5°F to 175°F (standard Buna seals)
• Application environment: Industrial process automation and fluid handling systems

Common Replacements:

• TRIAC 3R850SR
• TRIAC 2R1200SR
• TRIAC 2R500SR