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D52/R52 Series Spring-Diaphragm Pneumatic Linear Actuators
Brand: Koso Hammel DahlD52/R52 Series actuators are linear spring diaphragm pneumatic actuators designed for reliable operation of control valves.
The D52/R52 line of high power, multi spring diaphragm actuators are compact and light.
The D52/R52 is a rugged unit available in a combination of case sizes, strokes and springs to satisfy a wide range of applications.
The Type D52, direct-acting actuator, strokes downward with an increase in air pressure.
Opposing springs provide a fail-open response when attached to push-down-to-close globe control valves.
With the Type R52, reverse-acting actuator, an increase in air pressure retracts the actuator stem, providing fail-close response when attached to push-down-to-close globe control valves.
Features- Compact, multi-spring design.
- Hysteresis is less than 0.8% of full stroke with positioner.
- Linearity is less than 1.5% of full stroke with positioner.
- Stainless steel stems are standard for maximum performance in corrosive environments
Specifications
Brand
Diaphragm Case
- Pressed Steel
Stem
- 303 Stainless Steel
Diaphragm
- Ethylene Propylene Diene Monomer (EPDM)
Spring Barrel
- Cast Iron
Maximum Case Pressure
- 45 psi
Temperature Limits
- 14° F to 158° F
- -10° C to 70° C