Design and Function
Leakage-Proof Shut-Off
26
Operating Instructions · VARIVENT
®
Mixproof Valve L with Lifting Actuator, suitable for pigging operation
Edition 26/08/2016
Leakage-Proof Shut-Off
Introduction
On valve LH and LS, the tank and the valve housing are each closed off by a valve seat.
The chamber between the two valve disks is connected to the open environment by the
double-disk (16) and the leakage housing (73). In the event of seal damage, the leaking
fluid can safely flow into the open. Defective seals can thus easily be detected. Any
penetration of fluids from the tank into the pipe or vice-versa is excluded under normal
operating conditions.
Cleaning
CIP solution is introduced into the leakage outlet system through a separate CIP
connection (11) integrated in the lantern.
The CIP solution is then sprayed through a cleaning nozzle into the chamber between
the two valve disks. The used solution drains into the open by gravity via the double-disk
and the outlet pipe of the leakage housing. Cleaning of the leakage outlet system can
take place independently of the opening or closing position of the valve.
CIP Solution
Supplied from a CIP supply station
Kay data of the CIP solution
•
Operating pressure: min. 2 bar (29 psi) , max. 5 bar (72,5 psi)
•
Operating temperature: max. 135 °C
