HYDRAULIC ACTUATED VALVES

View: 394 - Date Submitted: 31/12/2019

Hydraulic actuators use liquid pressure rather than instrument air pressure to apply force on the diaphragm to move the valve actuator and then to position valve stem. ... If the passage of oil to and from a hydraulic cylinder is blocked by small valves, the actuator will become firmly “locked” into place.

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A broad range of hydraulic actuators with a choice of rack and pinion, scotch yoke, helical slot and linear designs suitable for heavy-duty service in the harshest environmental and operating conditions. Rack and pinion actuators provide the most economical on-off and modulating control for small to medium quarter-turn valves. The scotch yoke design creates high break-out torques making them suitable for quarter-turn valves up to the largest sizes. Helical slot is used when a reduced foot print impact is requested (it is available with a four-different output curves equivalent to R&P or SY), including models for very high-pressure applications.

Other product

ELECTRIC ACTUATED VALVES

Electric actuators can generate this force by transmitting it to the output shaft and then the valve stem. When pressure is applied to the valve stem, the valve’s orifice opens or closes.

PNEUMATIC ACTUATED VALVES

Pneumatic actuated valves used compressed air flowing into and exhausting from an actuator to open and close the valve. The type of pneumatic actuator required depends on the actuator valve. Valves requiring linear motion (gate, globe or diaphragm valves)...