Normal Operation - Mankenberg VV Serie Originalbetriebsanleitung

Original operating manual
Vacuum breaker VV
Installation preparations
Check the seals on screw-mounted parts of the body and reseal if necessary. If required, ask
MANKENBERG for the tightening torques.
caution
Observe the relevant notes in Section Troubleshooting help [} 14] .
The flow rate specified in the data sheet and the article texts refer to the fully open valve. To achieve these flow
rates the scale setting of the response pressures ∆P for type 34 must be set 0.05 bar lower than the tabular
values. The reason for this is the spring force (spring rate) that increases with rising performance and cone lift.

9 Normal operation

A properly designed vacuum breaker works automatically and does not need any form of auxiliary energy.
It is necessary to ensure that the materials selected for the parts of the fitting in contact with
media are suitable for the media in use. The manufacturer accepts no liability for any damage
due to corrosion by aggressive media on parts made of unsuitable materials.
danger of
Failure to observe this regulation may mean danger to life and limb and may cause
fatalities
damage to the pipeline system and to the fitting.
The fitting has functional parts that have to remain capable of moving easily. Make sure that
parts in contact with the medium cannot freeze nor become blocked by dirt or deposits.
Observe the maintenance intervals.
caution
Failure to observe this instruction may cause damage to the pipeline system and to the
fitting.
It is recommended that the fitting should be inspected to ensure that it is functioning correctly after each new
start-up.
VV-4.X.22.3 Issue 01.09.2022
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