The BURKERT 20068183 Type 8640 valve unit system is designed to solve diverse and complex control problems due to its systematic modular construction and combination of pneumatic and electrical interfaces. By putting together a row of pneumatic modules with different numbers of valves, 2 to 24 valve functionalities may be realized on one valve unit. Bodies and connection modules are made of high-quality plastic (polyamide) and are easy to assemble by means of the built-in snap connectors.

Configuration Details

This specific configuration (Article No. 20068183) features an 11 mm width per station, 20x 3/2-way valve function C, a collective socket module, and is designed for DIN-rail installation with IP20 protection.

General Technical Data

Feature	Specification (11 mm Width)
Body Material	PA (polyamide), aluminium
Seal Material	FKM, NBR and PUR
Width per station	11 mm
Manual override	Standard
Number of valve slots	Max. 24
Pressure range	2.5...10 bar (Specific to 20068183)
Operating voltage	24 V DC (±10% Voltage tolerance)
Nominal operating mode	Continuous operation (100% duty cycle)
Operating medium	Oil-free or lubricated compressed dry air, neutral gases (5 μm filter recommended)
Compressed air quality	ISO 8573-1: 2010, Class 7.4.4
Degree of protection	IP20 (IP65 in closed control cabinets)
Ambient temperature	0 °C...+ 55 °C

Circuit Functions

Symbol	Description
	Circuit function C (CF C) 3/2-way solenoid valve Servo-controlled, with manual override Normally closed

Product Connections

Module	Description
Collective connection module	Connection via individual stranded wires Looped-through ground potential Max. 24 valves Degree of protection IP20 Screw-type terminals

Product Design and Assembly

Pneumatics 11 mm width per station

No.	Element
1	Pneumatic connection module, left
2	Basic pneumatic modules
3	Pneumatic connection module, right
4	Valves (for example 3/2-way)

Dimensions

Pneumatics 11 mm width per station(Dimensions in mm, unless otherwise stated)

Standard rail EN 50022 35 x 7.5 or 35 x 15