Operation/Use
15.11.2018
DOUBLE-SEAT VALVE INOVA (Type 580)
BA 058000.06 EN
17 / 36
6
Operation/Use
6.1
Valve Switching Functions
The double-seat valve’s function is characterized through the following described switching
statuses.
6.1.1
Production – Valve Closed
•
The various process media flow through the upper and lower piping system or
valve housing.
•
Both valve disks are in the final position in the seat area and seal the piping
systems against each other.
•
The leakage chamber, which is connected with the free environment, is
formed between both valve disks.
•
When there are sealing problems in the seat area, the respective medium can
flow through the leakage chamber and the leakage outlet to the outside.
05
06
Fig. 4: Valve closed
Valve open
6.1.2
CIP or Production Valve Open
•
Through the compressed air supply at Pos. A (Page 21, Fig. 7/8) the lower
valve disk moves from its final position against the upper valve disk. At the
same time, the seat sealing is maintained. The double-seat valve switches
leak-free.
•
The leakage chamber between the now adjacent valve disks is sealed via the
leakage chamber sealing.
The valve disks travel into the opened valve position.
•
When the valve is closed, the valve disks now travel against the upper valve
seat.
•
The lower disk, maintaining its seat sealing, travels into the final position and
at the same time continually opens the leakage chamber.