Type 8690 Pneumatic control unit ELEMENT
Buerkert Type 8690 Pneumatic control unit for decentralised automation of process valves ELEMENT
The pneumatic control unit Type 8690 is designed for decentralised automation of ELEMENT Type 21xx pneumatic process valves. Mechanical or inductive limit switches register the valve position. The integrated pilot valve controls single or double-acting actuators. The design of the control unit and the actuator enables an integrated pilot air duct without external tubings. Besides the electrical position feedback, the status of the device is shown directly on the pneumatic control unit itself. The housing is easy to clean and features proven IP protection and chemically resistant materials for use in hygienic processing, in food, beverage and pharmaceutical industries. Focused on wash down applications, the IP protection of the housing is supported by a positive pressure inside the control head. Combined with Buerkert ELEMENT actuators, the pneumatic actuating system enables spring chamber aeration that avoids actuator chamber contamination from the environment.
Product benefits
- Compact design
- Integrated pilot valve with manual override
- Integrated pilot air duct in the actuator
- Visual position indicator
- With ATEX II cat. 3G/D and cat. 2G/D approval
