Burkert Type 8640 - Manual (Page 109)

109
Valves
22. VALVES
22.1. General description
Automation systems are being used increasingly in all areas in which open and closed loop tasks are to be managed.
The valves form the interface between electronics and pneumatics. The valves consist of a pilot control solenoid
valve and a pneumatic valve. Pilot valve and valve body are clamped or bolted to each other. The active principle
allows high pressures to be switched at low power consumption and short switching times.
The valves operate maintenance-free.
Ex license II 3 G Ex nA II T4 for Types 6524 / 6525 and Types 6526 / 6527
Type 6524
(2 x 3/2-way) Type 6524 Type 6525
Figure 77: Example of a valve: Types 6524 (2 x 3/2-way), 6524 and 6525
Variants
Valve Operating principle Operation Width Type
3/2-way C (NC) Internal control air 10 6524
D (NO)
C (NC) Control assist air
(External)
D (NO)
C - Vacuum (NC)
2 x 3/2-way 2 x C (NC) Internal control air
2 x C (NC) Control assist air
(External)
english
Type 8640