Installation, Operating & Maintenance Instructions
Series 284, DN 16, 25, 40, 63
(ID 5/8”, 1”, 1½”, 2½”)
Series 285, DN 16, 25, 40, 63
(ID 5/8”, 1”, 1½”, 2½”)
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel +41 81 771 61 61 Fax +41 81 771 48 30 [email protected] www.vatvalve.com
268249EF
2011-07-14
5/8
2 Installation
2.1 Unpacking
Before unpacking the valve, make sure that the packaging is in impeccable condition and the valve has not suffered
damage.
Note!
The plastic packing material and/or protective covers may only be removed immediately before the valve is
mounted into the system. Unprotected sealing surfaces must be treated with care and kept clean.
2.2 Installation into the system
DN (nom. I.D.)
Axial tensile or
compressive force
«F
A
»
Bending moment
«M»
mm
inch
N lbf Nm
lbf . ft
16
5
/
8
25
6 1
0.8
25 1“
70
16
3 2.2
40 1½
100
22 6 4.5
63 2½
200
45 18 13
A combination of both forces «F
A
» and «M» is prohibited. Please contact VAT.
3 Operation
3.1 Normal
operation
The valve is fully open when the green marking on the spindle is visible.
3.2 Operation under increased temperature
See «1.1 Technical data»
If you need any further information, please contact one of our service centers. You can find the addresses on our website:
http://www.vat.ch
