Radius Series MEH Electro-Hydraulic Actuator
The Radius Electro-Hydraulic Spring Return actuators are specifically designed for use on quarter turn valves and dampers. The unit utilizes a hydraulic spring return actuator assembled to a compact hydraulic unit. When electric power is lost, the springs in the actuator move it to a fail-safe position. The same electro hydraulic unit is used for all models. The unit has many control options such as fieldbus protocol, partial stroke testing devices and 4-20ma modulating positioners.
Features
- Mounting surfaces according to ISO 5211 and VDI/VDE 3845
- Standard NEMA 4, 4x. Wiring from the motor to control box protected with stainless steel tubing.
- The circuit pressure remains stable in spite of wide ambient temperature swings.
- Multiple combination of springs allow a wide range of torques for one model.
- Inner cylinder has been completely honed for long service life.
- Internal hydraulic porting eliminates leaking. No tubing, fittings or hoses.
- Easy maintenance with Smart Access to the hydraulic and electrical controls.
- Easily upgradable controls.
- Smart parts (same electro hydraulic unit is used for all models).
- Temperature range: -22° F to 176° F
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Options
- NEMA 7 and ATEX
- For larger torques, scotch yoke electro hydraulic actuators are available.
- Low temperature versions down to -58° F
- Stainless steel drive shaft.
- Special coatings for very high corrosive environments.
- Optional manual overrides attach easily to the actuator. Both manual gear boxes or hydraulic hand pumps.
- Fast closing time.
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