Series 65 
ERROR! REFERENCE SOURCE NOT FOUND. 
 
963283EA  Edition 2019-05-03  101/
 
 
 
5.9  Operation under increased temperature 
 
 
 
CAUTION 
Hot valve 
Heated valve may result in minor or moderate injury. 
Do not touch valve and heating device during operation. Once heating is switched off 
(valve and system) await until the valve is cooled down complete before doing any 
work. 
 
 
 
This valve may be operated in the temperature range mentioned in chapter 
«Technical data». 
5.10  Behavior In case of compressed air pressure drop 
Valve position 
before 
pressure drop: 
Valve closed 
Valve remains closed. 
Valve open or in any 
intermediate position 
Sealing ring moves down and blocks the pendulum plate at the current 
position. 
 
 
Refer to chapter: «Troubleshooting» for details.