The butterfly valve is designed to be used as a shut-off or regulating valve for flow control in heat supply systems, water supply, in technological processes of the food, chemical, oil and gas, pulp and paper and other industries. Operating principle: The valves are opened and closed by turning the disk by 90°. Opening is performed by turning the handle counterclockwise, closing - clockwise.
DNOVA pneumatic rotary actuators double-acting PA-DA and pneumatic rotary actuators with return spring PA-SA are designed to automate the process of controlling industrial valves at a maximum torque of up to 2128 Nm.
The pneumatic distributor is used to change the direction, start, stop compressed air flows in a pneumatic system depending on the external control action.
The limit switch unit is an electrical device designed to open and close the working circuit and to visualize the positions of the shut-off element of pipeline valves. The sealed box usually contains two mechanical switches rated for up to 250 V, which monitor the position of the actuator rod and signal in extreme positions. They are mounted on top of the actuator surface. In the upper part of the limit switch unit there is a two-color hemisphere of the visual indicator. If the connected pipeline valve is closed, only the red part of the hemisphere with the inscription CLOSED is visible; if open, only the yellow part with the inscription OPEN. This visual indicator is clearly visible from afar, which simplifies the inspection of the equipment, and the color difference between the open and closed positions reduces the likelihood of erroneous perception of information. Thanks to the use of the LSU, it becomes possible to transmit information about the position of the pipeline valve (open / closed) to automated control systems, which increases the reliability of the system as a whole and simplifies diagnostics when faults are detected.
The air preparation unit is designed to clean compressed air from droplet moisture and solid particles, remove condensate, automatically maintain pressure at a given level, and supply lubricant from the reservoir to the compressed air flow to the elements of the pneumatic system.

Technical characteristics of the DNOVA WBV3131S-2W-T-H, body material - stainless steel AISI 304, seal - Silicon, with pneumatic actuator PA-SA, pneumatic distributor 4V320-08 220V, LSUAPL-410N EX, ATU AFC2000

Rotary pneumatic actuators DNOVA with return springs PA-DA

Technical characteristics of DNOVAru rotary pneumatic actuators with return springs PA-SA:

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