Introduction; Intended Use - Mankenberg VV Serie Originalbetriebsanleitung

Original operating manual
Vacuum breaker VV

1 Introduction

This manual is intended to assist users of a MANKENBERG vacuum breaker during installation, operation and
maintenance. Read the manual thoroughly before installing or putting this valve into service.
Failure to follow the following instructions – particularly the cautionary and warning
notes – may lead to hazards and may invalidate the manufacturer's warranty.
caution
MANKENBERG is at your servíce for any assistance and queries. See section Further
information [} 16] for the addresses.
Technical information is also available at www.mankenberg.de

2 Intended use

A MANKENBERG vacuum breaker VV is a device only designed for protecting vessels or pipelines from
inadmissible underpressure (vacuum).
Is the internal pressure of a vessel decreasing by more than the preset differential pressure, the valve opens.
The system is vented until the preset differential pressure (towards the ambient pressure) is reached again.
Then the valve closes automatically closes.
The spring of a vacuum breaker is only slightly tensioned when delivered and not adjusted to a
defined opening pressure. It must be adjusted after installation. The pressure gauge needed
for the adjustment is not part of the supply schedule. A suitable vacuum indicator has to be
note
provided by the customer.
A vacuum breaker does not protect the vessel from overpressure.
Therefore a suitable safety valve must be installed.
caution
For very small differential pressures towards ambience or for precise vacuum control, the
installation of a MANKENBERG vacuum control valve is recommended.
note
MANKENBERG planning documents are available to give users precise assistance in selecting and designing
the appropriate fitting, e.g.:
In the section
<VV: Pressure control valves>:
<Know how vacuum valves>
<Data sheets VV34/36> with technical data and tables of the dimensions.
Admissible operating data are permanently marked on each device.
MANKENBERG valves are supplied as standard for screw-mounted or flange-mounted pipeline/tank
connections – also for special connections if required.
The upper limit of the permitted operating data for pressure and temperature is permanently marked on each
fitting supplied.
VV-4.X.22.3 Issue 01.09.2022
4
www.mankenberg.com