English – Burkert Type 6520 User Manual
Page 6
4 - 6520
english
NOTE
Under normal conditions, the devices work maintenance-free.
•
Drives:
- Piezo drive,
•
Valve housing with membrane and seat seals (5/2)
•
Service ports 2 (B) / 4 (A) with change-over plate to MAMUR flange layout,
plus feed and drain connections 1, 3 and 5 with G 1/4 internal thread
•
Can be installed in any position, preferably with connection at top
Operating voltage:
24 V DC ±10%
Pressure range:
2,5 to 7 bar
Flange:
NAMUR flange
Standby current:
< 150 µA at 24 V
Power dissipation:
< 10 mW
Permissible temperature range
Ambient:
- 20 to +55 ° C
Medium:
- 20 to +50 ° C
Protection class:
IP 65
The valve can be supplied in explosion protection class
to EN 50020, II 2G EEx ia IIC T6
3 GENERAL TECHNICAL DATA
3.1 Type 6520 NAMUR with 24 V connection
3.2 Valve construction