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ZRF Series

ZRF Series

The ZRF Series by Zeetork is a high-performance line of scotch yoke pneumatic actuators designed for quarter-turn valve automation in critical industrial applications. 

  • Scotch yoke mechanism for optimized torque output over full stroke.
  • Double Acting Torque Range: 100 Nm to 250,000 Nm
  • Spring Return Torque Range: 200 Nm to 45,000 Nm
  • Modular design: interchangeable parts for single or double acting use.
  • Available with single or twin cylinders.
  • ISO 5211 and NAMUR compliant interfaces.
  • Manual override options:
  • screw type, handwheel, and hydraulic.
  • Extended travel stop (EX) for safe quick stroke operation.
  • Adjustable stroke range: ±6°.
  • Build Quality & Materials:
  • Weatherproof enclosed body in ductile iron or carbon steel.
  • PTFE cylinder coating for corrosion resistance.
  • Triple-layered exterior paint for chemical and marine environments.
  • Operating Conditions:
  • Air Supply: 3 to 6 bar, filtered and lubricated (<40 μm)
  • Temperature Range:
  • Standard: -20°C to +80°C
  • Low Temp: down to -50°C (with 09MnNiDR steel, PTFE seals)
  • Mounting Interface:
  • ISO 5211, NAMUR
  • Ingress Protection:
  • Fully water ingress protected with NBR/PTFE seals
  • Lubrication: Self-lubricating PTFE internal surfaces
  • Torque Output:
  • Verified torque charts for Double Acting and Single Actingmodels from 3 to 6 bar
  • Extensive sizing from ZRF10 to ZRF60, spring sizes 3 to 6 bar
  • Air Consumption:
  • Double Acting: 1.68L to 589.86L per cycle
  • Spring Return: Similar volumes with air/spring phases
Feature Rack & Pinion Actuator Scotch Yoke Actuator
Working Principle Linear rack moves pinion to rotate output shaft Linear piston drives yoke for rotary motion
Torque Output Curve Linear (constant torque) Non-linear (higher torque at start & end)
Torque Characteristics Moderate torque High break and seating torque
Size & Weight Compact and lightweight Bulky and heavy
Efficiency Moderate High mechanical efficiency
Wear & Tear Less mechanical stress Higher wear in yoke slot
Maintenance Low Medium to high
Cost Cost-effective More expensive
Cycle Life High (ideal for frequent operations) Medium (less suited for continuous cycling)
Applications General purpose valves (ball, butterfly) Heavy-duty valves with high seating force
Preferred Industries Water, HVAC, general automation Oil & gas, power, process industries

Disclaimer

All data are for general information, subject to change without prior notice. Kindly contact us to reconfirm specific data where required.

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Frequently Asked Questions

What operating conditions can the ZRF Series handle?

The ZRF Series works with filtered, lubricated air supply at 3–6 bar pressure. It operates in standard temperatures from –20°C to +80°C and extreme low temperatures down to –50°C using special steel and PTFE seals. The actuator is fully water ingress protected with NBR/PTFE seals and features self-lubricating internal surfaces. Adjustable travel stops (±6°) and manual overrides (screw, handwheel, hydraulic) enhance safety and control in demanding industrial conditions.

Key benefits of the ZRF Series include exceptional torque output, modular interchangeable parts for easy maintenance, and flexible mounting (ISO 5211/NAMUR). Its scotch yoke mechanism ensures optimized torque across the full stroke. The rugged weatherproof body and triple-layered paint offer strong corrosion resistance, suitable for chemical and marine environments. The actuator provides adjustable stroke control, reliable fail-safe operation in Spring Return models, and precise torque verification charts, making it ideal for critical automation applications.

The ZRF Series integrates several safety and precision features, including an extended travel stop (EX) for quick, safe stroke operation and adjustable stroke range of ±6°. Manual override options (screw type, handwheel, hydraulic) provide operator control during emergencies. Its fully enclosed body prevents water ingress, while PTFE coatings enhance corrosion resistance and self-lubrication. Verified torque charts ensure precise torque delivery at 3–6 bar air supply. These features make it highly dependable for industrial

The ZRF Series delivers robust torque outputs: Double Acting (DA): 100 Nm to 250,000 Nm Spring Return (SR): 200 Nm to 45,000 Nm Air consumption varies by model and cycle: DA Models: From 1.68L up to 589.86L per cycle SR Models: Similar air volumes during air/spring phases These wide-ranging capabilities make the ZRF Series highly adaptable for heavy-duty industrial applications requiring reliable, high-torque valve control.

Pneumatic Actuator

Data Sheet - ZRF
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Contact Us

  • Singapore : +65 68505141
  • India : +91 422 6794275
  • sales@zeetork.com
  • Singapore : Zeetork Automation & Control Pte Ltd,
    22 Sin Ming Lane, #06-76, Midview City, Singapore-573969
  • India : Zeetork Automation & Control Private Limited, S.F.NO 617/2H2, Vadakku Thottam, Malumichampatti P.O, L&T Road, Coimbatore-641021

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ZRF

ZRF Series

The ZRF Series by Zeetork is a high-performance line of scotch yoke pneumatic actuators designed for quarter-turn valve automation in critical industrial applications. Available in double acting and spring return variants, the ZRF series offers torque outputs from 100 Nm to 250,000 Nm with exceptional control, reliability, and resilience.
  • Scotch yoke mechanism for optimized torque output over full stroke.
  • Double Acting Torque Range: 100 Nm to 250,000 Nm
  • Spring Return Torque Range: 200 Nm to 45,000 Nm
  • Modular design: interchangeable parts for single or double acting use.
  • Available with single or twin cylinders.
  • ISO 5211 and NAMUR compliant interfaces.
  • Manual override options:
  • screw type, handwheel, and hydraulic.
  • Extended travel stop (EX) for safe quick stroke operation.
  • Adjustable stroke range: ±6°.
  • Build Quality & Materials:
  • Weatherproof enclosed body in ductile iron or carbon steel.
  • PTFE cylinder coating for corrosion resistance.
  • Triple-layered exterior paint for chemical and marine environments.
  • Operating Conditions:
  • Air Supply: 3 to 6 bar, filtered and lubricated (<40 μm)
  • Temperature Range:
  • Standard: -20°C to +80°C
  • Low Temp: down to -50°C (with 09MnNiDR steel, PTFE seals)
  • Mounting Interface:
  • ISO 5211, NAMUR
  • Ingress Protection:
  • Fully water ingress protected with NBR/PTFE seals
  • Lubrication: Self-lubricating PTFE internal surfaces
  • Torque Output:
  • Verified torque charts for DA and SR models from 3 to 6 bar
  • Extensive sizing from ZRF10 to ZRF60, spring sizes 3 to 6 bar
  • Air Consumption:
  • Double Acting: 1.68L to 589.86L per cycle
  • Spring Return: Similar volumes with air/spring phases

Photo Gallery

Frequently Asked Questions

What operating conditions can the ZRF Series handle?

The ZRF Series works with filtered, lubricated air supply at 3–6 bar pressure. It operates in standard temperatures from –20°C to +80°C and extreme low temperatures down to –50°C using special steel and PTFE seals. The actuator is fully water ingress protected with NBR/PTFE seals and features self-lubricating internal surfaces. Adjustable travel stops (±6°) and manual overrides (screw, handwheel, hydraulic) enhance safety and control in demanding industrial conditions.

Key benefits of the ZRF Series include exceptional torque output, modular interchangeable parts for easy maintenance, and flexible mounting (ISO 5211/NAMUR). Its scotch yoke mechanism ensures optimized torque across the full stroke. The rugged weatherproof body and triple-layered paint offer strong corrosion resistance, suitable for chemical and marine environments. The actuator provides adjustable stroke control, reliable fail-safe operation in Spring Return models, and precise torque verification charts, making it ideal for critical automation applications.

The ZRF Series integrates several safety and precision features, including an extended travel stop (EX) for quick, safe stroke operation and adjustable stroke range of ±6°. Manual override options (screw type, handwheel, hydraulic) provide operator control during emergencies. Its fully enclosed body prevents water ingress, while PTFE coatings enhance corrosion resistance and self-lubrication. Verified torque charts ensure precise torque delivery at 3–6 bar air supply. These features make it highly dependable for industrial

The ZRF Series delivers robust torque outputs: Double Acting (DA): 100 Nm to 250,000 Nm Spring Return (SR): 200 Nm to 45,000 Nm Air consumption varies by model and cycle: DA Models: From 1.68L up to 589.86L per cycle SR Models: Similar air volumes during air/spring phases These wide-ranging capabilities make the ZRF Series highly adaptable for heavy-duty industrial applications requiring reliable, high-torque valve control.

Pneumatic Actuator

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