BURKERT Type 8640 modular valve island (SKU 20106345) 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. The 11 mm width per station variant supports a mixed valve population and features a multi-pole electrical connection, making it highly flexible for control cabinet installations.

General Technical Data (11 mm Width per Station)

The following specifications apply to the 11 mm width per station configuration, utilizing pilot valves such as Type 0460, Type 6524, and Type 6525.

Feature	Specification
Material (Body)	PA (polyamide), aluminium (Type 0460)
Material (Seal)	FKM, NBR and PUR
Width per station	11 mm
Manual override	Standard
Number of valve slots	Max. 24 (Max. 12 for impulse and double valves with multipole connection)
Pressure range	Vac...10 bar
Operating voltage	24 V DC (±10% tolerance)
Nominal power per valve	0.8 W (Single valves); 2x0.8 W with power reduction (Impulse/double valves)
Degree of protection	IP20 (IP65 in closed control cabinets)
Operating medium	Oil-free or lubricated compressed dry air, neutral gases (5 μm filter recommended)
Ambient temperature	0 °C...+ 55 °C (0 °C...+ 50 °C when using Type 0460)

Product Assembly

Electronics

The electrical connectivity is achieved via multi-pole interfaces, allowing for streamlined wiring and integration.

1. Electrical end module, left
2. Terminal module for feedback
3. Extension module for electrical inputs
4. Multi-pin digital inputs (initiators)
5. Electrical end module, left
6. Basic electrical module standard
7. Fieldbus module
8. Multipin valve outputs
9. Common connection module

Pneumatics (11 mm width per station)

1. Pneumatic connection module, left
2. Basic pneumatic modules
3. Pneumatic connection module, right
4. Valves (for example 5/2-way)

Dimensions

Dimensions for the 11 mm width per station pneumatics configuration (in mm, unless otherwise stated):

Installation & Safety Instructions

DANGER

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. Observe any applicable accident prevention and safety regulations for electrical devices.

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.

NOTE

Pilot pressure: For pneumatic control units, the pilot pressure depends on the pressure of the flow medium; it must be between 2 ... 10 bar (at least 70% of operating pressure).

Pressure difference: Ensure a pressure difference between port 1 and 3 of at least 2 bar. When temperatures are below 0 °C, operation is restricted to dried air.

Recommended Action for Push-in Connectors

To ensure optimal performance and prevent leakage with push-in connectors:

• Use suitable materials: Ensure the appropriate combination of hose material (polyamide or polyurethane) and push-in connector is used.
• Check the hose size: Ensure the outer diameter of the hose matches the specification of the push-in connector.
• Cut the hose correctly: Cut the hose straight. Cutting it diagonally adversely affects the holding force.
• Insert the hose correctly: Press the hose into the push-in connector with sufficient force so that it is held correctly by the claws.