Installation, Operating & Maintenance Instructions

Series 64, DN 63-400 (I.D. 21/2" - 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: