Operation Under Increased Temperature; Bake-Out; Trouble Shooting - VAT 590 Series Installation, Operating, & Maintenance Instructions

5.2

Operation under increased temperature

Maximum allowed temperature see product data sheet.
5.3

Bake-out

Bake-out temperature see product data sheet.
5.4

Trouble shooting

Failure
Leak at gate
Leak at body
Table 5-1
If you need any further information, please contact one of our service centers. You will find
the addresses on our website www.vatvalve.com.
14/23
OPERATION
Inconstant temperatures
Performance of the valve may deteriorate.
– Actuate valve only after the bake-out temperature has been stable for two
hours.
– If valve must be actuated during bake-out, make sure that the heating or
cooling rate does not exceed 10 °C per hour in the temperature range
from 100 °C to 300 °C
– Make sure that the temperature differences over the whole body do not
exceed 30 °C.
Check
Condition of gate
seal
Condition of
valve gate
Condition of
bonnet seal and
sealing surface
Edition 2013-07-03
NOTICE
Action
Please contact VAT
Please contact VAT
Please contact VAT
Series 590
See
www.vatvalve.com
www.vatvalve.com
www.vatvalve.com
299498EA