Product Overview
The SKE-L Series Pneumatic Linear Piston Actuator is a heavy-duty drive mechanism designed for control valves that perform vertical linear reciprocating motion, such as gate valves and globe valves. The actuator uses high-pressure gas to push a large-area piston within the cylinder, transmitting linear thrust directly through the piston rod to the valve stem, driving the valve plug up and down to achieve on/off switching or precise throttling control.
Why Choose This Product
Multiplied Thrust Capacity: The SKE-L supports 1P/2P/3P stacked multi-piston coupling technology, accommodating a wide range of extra-large thrust requirements without the need to purchase costly, oversized single-piston actuators.
Manual Override: Available with a top-mounted screw manual mechanism (TM), a side-mounted sprocket/handwheel mechanism (SM), and a compact hydraulic manual mechanism (HM) with the cylinder integrated within the spring housing. Even in the event of sudden air or power loss, operation can be quickly switched to smooth manual control, ensuring uninterrupted on-site production.
Wear and Corrosion Resistance: The cylinder's inner wall is hard-chrome plated, and the sliding rails undergo high-frequency quenching and high-precision grinding, delivering excellent wear and corrosion resistance suitable for harsh environments such as offshore installations with heavy salt spray.
Core Advantages and Features:
Simple Structure
Users can select components such as local position indicators, the pneumatic structure, an optional air/manual switching mechanism, and mounting brackets according to application requirements.
Easy Operation
To meet the needs of automated production, the complete pneumatic valve assembly can be equipped with a positioner to enable remote control and centralized control of multiple valves.
Safe and Reliable
When the pneumatic actuator is equipped with an air/manual switching device, if a loss of air, loss of power, or a fault in the solenoid valve or other control circuit occurs, the operating handle can easily be turned to quickly switch between pneumatic and manual operation, ensuring the device continues to run normally. It can also be used as a manual valve before the control system of a new project is completed.
Technical Specifications
| Item | Parameter |
|---|---|
| Product Type | Compact Scotch-Yoke Actuator |
| Actuation Mode | Quarter-turn, spring-return or double-acting |
| Certification | SIL3, EAC |
| Control Type | On/off, positioning, modulating, ESD emergency shutdown |
| Valve Type | Linear-stroke valves such as gate valves, globe valves, angle valves, and straight-through valves |
| Thrust | 2850Nm~380000Nm |
| Housing Material | Carbon steel, inner wall hard-chrome plated, rails high-frequency quenched and ground |
| Power Source | Pneumatic |
| Working Pressure | 2 Bar to 8 Bar |
| Operating Temperature | Standard type: -20°C to +80°C; Low-temperature type: -40°C to +80°C; High-temperature type: -20°C to +150°C |
| Stroke Range | 50~350mm |
SKE-L Product Configuration Options
