GEA VARIVENT X, Operating Instruction

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9.
Fit the seals.
10. Assemble the valve and depressurize the actuator.
®
The valve disk is lowered.
®
Install the valve with welded ends.
Hint!
We recommend using the automatic orbital welding method.
Housing O-rings: When assembling the valve always replace the
housing O-rings to ensure that the valve is tight.
6.6 Pneumatic connections
6.6.1 Air Requirement
The air requirement for the switching operation depends on the actuator type
(identification marking on the cover of the actuator).
Actuator type
Actuator Ø
[mm]
Air requirement (dm
3
n
/
Stroke)
A... 98 0.16
B... 109 0.26
C... 135 0.42
D... 170 0.70
E... 210 1.10
R...¹ 169 1.60
S...¹ 210 2
T...¹ 210 3.10
D...6 170 1.30
E...6 210 2
S...6 261 3.20
T...6¹ 210 4
U...6¹ 261 5.10
1
Actuators with booster cylinder for increasing the pneumatic actuating force
when lower control air pressures are used
dm
3
n
at 1.01325 bar at 0 °C according to DIN 1343.
6.6.2 Establishing Hose Connections
To ensure reliable operation, the compressed air hoses must be cut exactly
square.
Tools required:
• A hose cutter
Assembly and installation
Pneumatic connections
430BAL008430EN_4
30 08.03.2022