Fork Type Pneumatic Actuator

Corrosion
Resistant

Leak Tight
Sealing

Automated
Operation

Low Maintenance
Long Life

Alis Valves is an Fork Type Pneumatic Actuator Manufacturer Supplier in India Offering high-torque pneumatic actuator designed to operate quarter-turn valves such as ball, butterfly and plug valves. Its Scotch Yoke mechanism converts pneumatic piston movement into rotary torque, making it suitable for high breakaway-torque and critical valve automation applications.

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Product Specifications and Overview

Rotation

90° ±5° Adjustable

Torque Range

Approx. 300 to 100,000 Nm

Operating Pressure

2.5 to 8 bar

Supply Medium

Dry Compressed Air / Inert Gas

Temperature Range

-20°C to +80°C Standard

High Temperature Version

Up to +125°C / +150°C

Low Temperature Version

Down to -45°C / -60°C

Accessory Interface

NAMUR

Enclosure Protection

IP66 / IP67

Control

On-Off / Modulating

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Industries Served

Chemical

Engineered valve solutions tailored for critical Chemical operating processes.

Fertilizer

Engineered valve solutions tailored for critical Fertilizer operating processes.

Oil & Gas

Engineered valve solutions tailored for critical Oil & Gas operating processes.

Power Generation

Engineered valve solutions tailored for critical Power Generation operating processes.

Applications

Emergency Shut-Off

High-performance flow automation engineered for Emergency Shut-Off operations.

High Pressure

High-performance flow automation engineered for High Pressure operations.

HIPPS

High-performance flow automation engineered for HIPPS operations.

Vacuum

High-performance flow automation engineered for Vacuum operations.

Frequently Ask Questions

What is a Fork Type Pneumatic Actuator?

It is a Scotch Yoke pneumatic actuator that converts linear piston movement into rotary torque for operating quarter-turn valves.

How is actuator torque selected?

Actuator torque must be selected based on the valve's required breakaway, running and seating torque at the actual differential pressure and operating conditions.

What is the normal operating pressure?

Depending on the model, Scotch Yoke actuators commonly operate around 2.5–8 bar, while some designs support pressures up to 12 bar.

What is fail-open operation?

In a spring-return fail-open configuration, loss of pneumatic supply causes the actuator to move the valve toward the open position.

Is a Fork Type Actuator suitable for high-temperature applications?

Yes, with appropriate high-temperature seals, lubricants and actuator construction. High-temperature versions are available depending on the manufacturer.

Why is it called a Fork Type Actuator?

The actuator uses a fork-shaped Scotch Yoke mechanism to convert the linear movement of the piston into rotary movement of the output shaft.

Why does differential pressure affect actuator sizing?

Higher differential pressure can increase the torque required to move the valve closure element, so it must be considered during actuator sizing.

What is fail-close operation?

In a spring-return fail-close configuration, loss of pneumatic supply causes the actuator to move the valve toward the closed position.

Can a Fork Type Actuator be used for ESD valves?

Yes. Spring-return Scotch Yoke actuators are commonly used for Emergency Shutdown (ESD) and safety-critical valve applications.

Is ALIS Valves a Fork Type Pneumatic Actuator Manufacturer in India?

ALIS Valves offers pneumatic actuator solutions in India for industrial valve automation. For a specific Fork Type / Scotch Yoke model, the exact torque, pressure and temperature range should be confirmed from the approved ALIS datasheet before publishing.