The BURKERT 20053556 Type 8640 is a modular valve island designed to solve diverse and complex control problems due to its systematic modular construction and combination of pneumatic and electrical interfaces. This specific 33mm 3-bank valve block features a G 1/2 pressure port, G 1/4 working ports, and operates within a 2 to 8 bar pressure range. By putting together a row of pneumatic modules, multiple 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 built-in snap connectors.

System Features

• Compact design
• Modular configuration
• Higher flexibility in control cabinet due to AirLINE Quick
• Simple exchange of valves (with option "P-shut-off" – also possible during operation)

Technical Specifications

Property	Value
Add-on dimension	33 mm
Pressure port	G 1/2
Working port	G 1/4
Working connection position	Opposite of supply side
Nominal pressure	2 to 8 bar
Temperature medium	0 °C to 50 °C
Temperature environment	0 °C to 55 °C
Mounting type	DIN-rail installation
Protection type	IP20

Installation

Safety Warnings

Risk of injury due to high pressure and escaping medium.

• Switch off the pressure before working on the device or system. Vent or drain the pipes.

Risk of injury due to electric shock.

• Switch off voltage before working on the device or system. Secure against reactivation.

Valve Block Installation

Standard rail installation:

1. Hook the valve block with the upper groove into the standard rail (35 x 15 or 35 x 7.5 EN 50022).
2. Snap the lower clamping pieces into the standard rail.
3. Tighten the screws on the clamping pieces.

Wall installation:

• Fasten the valve block directly to the wall with M4 screws.

Pneumatic Installation

WARNING

Risk of injury from quickly accelerating device parts and unconnected compressed air hoses flapping around.

• Before applying pressure to the valve, check all hose connections and fittings for tight, secure fit.

Before connection:

• Check the hose lines for contamination and clean them.
• If necessary, install dirt traps upstream of the valve inlet (≤ 5 µm).

Pneumatic connection:

INFO

Breaking hazard: Do not use the coil as a lever arm. Do not use a pipe wrench when screwing in.

• Push the hose lines into the push-in connections of the solenoid valves until they come to a stop.
• Use PTFE tape or elastomer seal for sealing the threaded connection.
• Align hose lines.
• Connect the supply and working lines to the valve block.