VAT 64 Series - Compressed Air Connection

Installation, Operating & Maintenance Instructions
Series 64, DN 63-400 (I.D. 2
1
/2" - 16")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel +41 81 771 61 61 Fax +41 81 771 48 30 CH@vatvalve.com www.vatvalve.com
219034EM
2013-08-27
7/19
2.2.3 Compressed air connection
Connect air pressure to inputs '1' of the solenoids (internal thread R
1
/8“,
1
/8“ NPT for USA)
Solenoid valve:
Solenoid valve for impulse actuation:
Make sure the emergency operation screws are in remote position (fully counter-clockwise)
Note: Compressed air pressure (above atm): 4 - 7 bar / 56 -98 psi
Attention:
For proper function of the valve it is essential to use equal air pressure at OPEN -, CLOSE - and
MIDDLE Pos. inlets. See table on page 6. Please consider that different solenoids, tube lengths and
diameters can affect the air pressure.
Compressed air may only be connected if
- valve has been installed into the vacuum system
- moving parts cannot be touched
Use only clean, dry or slightly oiled air!
For secure switching of solenoids, the inner diameter of the air connection tubes has to be:
- 4 mm for lengths up to 1 m
- 6 mm for lengths from 1 m to 5 m
- 8 - 10 mm for lengths above 5 m
2
4
3
1
5
2
4
3
1
5
schematic: schematic: