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The RHINO double pneumatic “Rack and Pinion” actuator is one of the best designs on the market. Available as “Double Action” (Air-air) or “ Spring Return” with torque outputs for small to large valves.

Both actuators have twin cylinders, horizontally opposed incorporated piston guides to assure the correct contact between the “Rack and Pinion” facilitating that the kinetic energy is transformed directly in a “turn room” that will provide a soft and constant torque.

Prepared with bores and threads that meet the international standards NAMUR and ISO. Built in robust extruded aluminum, but light and resistant to environmental corrosion.

PRINCIPLE OF OPERATION OF THE ACTUATOR ISO5211 WITH SPRING RETURN.

Air pressure applied to the Port “A” will cause the internal cavities to pressurize, forcing the pistons to move toward the end, compressing the springs.

The axis rotates in a counter clockwise motion. When stopping the application of air pressure in port “A” the springs will exercise pressure to close the pistons and to rotate the axis quickly in a clockwise motion. This action is frequently used to close the valve referred to as “NORMALLY CLOSED.”

The axis will rotate in counter clockwise motion when pressure is applied in Port “A”, it forces the pistons to separate.

During this operation, the air of the external cavity is expelled through port “B.” The turn of the axis in a clockwise motion is achieved with the action opposite to the previously described by applying pressure to port “B.”

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Contact Information

Rhino Valve USA
7500 Downing Ave.
Bakersfield, CA 93308