Installation, Operating, and Maintenance Instructions
Series 01, DN 16 - 50 (5/8" - 2")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel +41 81 771 61 61 Fax +41 81 771 48 30 [email protected] www.vatvalve.com
271691EB
2009-03-09
5/15
2.3 Admissible forces
Tighten mounting screws of the flanges uniformly in crosswise order. Observe the maximum torque of
9 Nm / 6.5 lbf
.
ft for CF flanges
Forces from evacuating the system, from the weight of other components, and
from baking can lead to deformation of the valve body and to malfunction of
the valve. The stress has to be relieved by suitable means, e.g. bellows
sections. The following forces are admissible:
Axial tensile or compressive force «FA»: 500 N / 112 lbf
Bending moment «M»:
30 Nm / 22 lbf
.
ft
If a combination of both forces («FA» and «M») occurs, the values mentioned
above are invalid. Please contact VAT for more information.
2.4 Connections
2.4.1 Compressed air connection
Connect compressed air only if
- valve has been installed into the vacuum system
- moving parts cannot be touched
With solenoid:
Connect compressed air to
IN
(internal thread R
1
/
8
“,
1
/
8
“ NPT for USA)
Without solenoid: Connect compressed air to
OPEN
and
CLOSE
(internal thread M5)
Compressed air pressure (min. - max. overpressure): 5.0 - 7 bar / 72.5 - 100 psig
Use only clean, dry or slightly oiled air!
2.4.2 Compressed air connection: Solenoid separate, without solenoid
Ordering No. 010 . . - . E12/22
Pneumatic actuator: single acting
with opening spring (NO)
3/2-way valve
Compressed air connection:
Internal thread R
1
/
8
“ (
1
/
8
“ NPT for USA)
Compressed air to connection <2>:
valve closes
Ordering No. 010 . . - . E11/21
Pneumatic actuator: single acting
with closing spring (NC)
3/2-way valve
Compressed air connection:
Internal thread R
1
/
8
“ (
1
/
8
“ NPT for USA)
Compressed air to connection <2>:
valve opens
Ordering No. 010 . . - . E14/24
Pneumatic actuator: double acting
4/2-way valve
Compressed air connection:
Internal thread
1
/
8
“
Compressed air to connection <A>:
valve opens
Compressed air to connection <B>:
valve closes
1
2
1
2
