Installation; General Notes - Mankenberg EB 1.12 ATEX Originalbetriebsanleitung

Original operating manual
Bleeding and Venting Valves EB 1.12 ATEX

6 Installation

6.1 General notes

The same installation regulations apply to a fitting as to the system into which it is installed.
Section Transport and storage [} 9] should also be observed during transport to the installation site.
Vent valves should always be installed at high points in pipelines or vessels. Do not install vent valves on
standpipes or in flushing lines but at those points where air accumulates. Select a pipe run where the flow
velocity is reduced and, if required, install a vent dome.
You should choose an installation site where the vent valve is not likely to "hammer" and thereby get damaged.
Select the installation location in such a way that the bleeding and venting valve is not exposed to direct air flow,
otherwise the internal parts may be damaged. When air is expelled, no drops of liquid must be entrained or
enter the body at high velocity. If in doubt, plan a baffle plate or deflector.
Examples of assembly on filter vessels
Picture 1: wrong, in center
a = Bleeding/venting valve
A small amount of liquid may escape during the venting process. In the case of toxic or
hazardous media, a pressureless drain line must therefore be connected to the vent outlet to
discharge the escaping medium safely (also recommended for other media).
danger of
fatalities
Bleeding and venting valves must be installed in such a way that the inlet connection is
vertical.
note
Please make sure that the cross-sectional area of the tank outlet is not less than that of the
vent valve inlet.
note
The statics of the pipeline must match the weight of the device, especially of those with off-centered mass. If
required the pipeline may have to be properly supported on both sides next to the fitting (or at the fitting itself) –
particularly in the case of fittings with a substantial mass and especially if vibrations are to be expected in the
system.
When the fitting is supported, it is important to check that all functioning parts (levers, floats) remain capable of
moving freely and are not blocked.
The valve must not be coated with a thermal insulation which may cause the max. admissible temperature to
exceed the value indicated on the nameplate.
EB 1.12 ATEX-4.X.222 Issue 26.07.2022
Picture 2: right, off-centre
b = Water supply
10
Picture 3: right, with deflector
c = Vent line
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