Functional Description; Leakage-Proof Shut-Off; Cleaning Function; Cleaning By Lifting - GEA VARIVENT R Manual

Description

Functional description

3.2 Functional description
3.2.1

Leakage-Proof Shut-Off

The upper and the lower valve housing are each equipped with a valve seat. The
chamber between the two valve disks is connected to the open environment by
an isolation outlet integrated into the lower valve stem. In the event of seal
damage, the leaking fluid can safely flow into the open. Defective seals can thus
easily be detected. Under normal operating conditions, liquid from one pipe is
prevented from entering the other pipe.
3.2.2

Cleaning function

A cleaning liquid is supplied to the leakage drain system via a separate
connection (1) arranged in the lantern. The cleaning fluid is sprayed into a cavity
between both of the valve discs over a ring nozzle (2) and flows out through a
drain free of pressure.
Fig.6
The cleaning of the leakage drain system occurs independently from the opening
and closing of the valve.
The cleaning fluid flows out of a CIP-cleaning unit.
Cleaning fluid data:
•
•
3.2.3

Cleaning by lifting

When cleaning the pipeline, the valve disk in contact with the cleaning liquid can
be lifted separately. This allows the cleaning liquid to enter the leakage cavity and
to clean the seats and the leakage cavity.
22
Service pressure: min. 2 bar (29 psi), max. 5 bar (72.5 psi)
Service temperature: max. 135 °C (275 °F)
430BAL008394EN_6
20.09.2023