Picture 5: Limit curve of the VAG EKN
®
Butterfly Valve
Example of a limit curve of the VAG EKN
®
Butterfly Valve
At a pressure of 5 bars and a flow velocity of 8 m/s, the hydraulic
moment of the flow around the disk is so high that a PN 16 VAG
EKN® Butterfly Valve must be selected.
3.4 Permissible and impermissible modes of
operation
The maximum operating temperatures and operating
pressures specified in the technical documentation
(KAT-A 1310) must not be exceeded. The pressure
applied to the closed valve must not exceed its rated
pressure.
The VAG EKN
®
Butterfly Valve has its limit stop in the gearbox.
This stop limits both the open and the closed position. Due to the
automatic lock of the gear, it suffices to touch the end position.
Do not tighten it as this will not improve the tightness of the valve.
VAG Operation and Maintenance Instructions • 6
Permanent operation of the valve in throttle position can result
in its increased wear and tear and even destroy the valve or the
downstram pipeline. The operational limits according to Section
3.3.1 need to be established. leitung führen. Die Betriebsgrenzen
gemäß Punkt 3.3.1 sind zu ermitteln.
