Double acting pneumatic actuator manufacturer

Key Components

Pneumatic Chamber – Where compressed air acts on a piston or diaphragm.

Spring Mechanism – Provides the return force when air pressure is released.

Stem or Shaft – Transmits motion to the valve or damper.

Housing – Protects internal components from environmental factors.

Why Choose Spring Return pneumatic actuator for High-Temperature Applications?

Fail-Safe Reliability: Ensures safety in critical processes (e.g., emergency shutdowns).

No Electrical Components: Eliminates spark risks in explosive environments.

Robust Performance: Works efficiently even under extreme heat.

Common High Temperature Industrial Environments

Oil Refineries & Petrochemical Plants (200°C – 600°C)

Power Generation (Steam Valves & Boilers) (150°C – 500°C)

Furnaces & Kilns in Manufacturing (300°C – 1000°C)

Aerospace & Automotive Testing (Extreme thermal cycling)

How Spring Return Pneumatic Actuators Handle High Temperatures

To ensure durability in high-temperature conditions, these spring return pneumatic actuators incorporate:

A. Heat-Resistant Materials

Stainless Steel Housing (Grade 316 or 304) – Resists corrosion and thermal expansion.

High-Temperature Seals – Maintain integrity under extreme heat.

Ceramic Coatings – Used in ultra-high-temperature applications (e.g., furnace controls).

B. Thermal Insulation & Cooling Mechanisms

Heat Shields & Thermal Barriers – Protect internal components.

Air Cooling Jackets – Circulate cool air around the spring return pneumatic actuator.

Extended Stem Designs – Keep the actuator body away from direct heat sources.

C. Spring Design Considerations

High-Temperature Alloy Springs (Inconel, Hastelloy) – Prevent loss of elasticity.

Applications in High-Temperature Industries

A. Oil & Gas Industry

Wellhead Control Valves – Emergency shut-off in case of fire.

Flare Stack Systems – Reliable operation in extreme heat.

Refinery Process Valves – Handling hot crude oil & gas.

B. Power Plants (Thermal & Nuclear)

Steam Turbine Bypass Valves – Fast response in high-pressure steam lines.

Boiler Feedwater Control – Ensures safety during overheating.

C. Chemical & Petrochemical Processing

Reactor Cooling Valves – Prevents runaway reactions.

High-Temperature Pipeline Isolation – Safe shutdown in leaks.

D. Steel & Glass Manufacturing

Furnace Damper Control – Regulates extreme heat flow.

Molten Metal Handling – Precision in casting processes.

E. Aerospace & Automotive Testing

Exhaust Gas Simulation – Reliable actuation in test rigs.

Thermal Vacuum Chambers – Valve control in extreme conditions.

Spring return Pneumatic Actuator Specification：

Comply to UNI EN 15714-3:2009 standard

ISO connection standard：UNI EN ISO 5211。

Auxiliary connectioin：NAMUR,VDI/VDE3845

Control angle：90°(-5°~+3°)。

Torque：Relative to control pressure and type.

Spring return Pneumatic Actuator Working Condition：

Operation temperature：-20℃~+120℃

Pressure：2-8bar

Operating Medium：Filtered compressed air dry or lubricated.The pressure condensation point in accordance with

(ISO 8573-1:2010, Class 3)has to be ≤ - 20℃ or 10℃under ambient temperature.

The maximum particle size in accordance with (ISO 8573-1:2010, Class 5) should not exceed 40 µm.

Spring return Pneumatic Actuator Benefits：

Part Number and Material：

Schedule：

Note: 1)180-260 body is split type.

2)140-260 not included.

Above illustration for internal structure demonstration only,not for all models and parts.