40
Wavin AS+
Technical Manual
Phone. +31(0)38 42 94 951
Ventilation valves
Ventilation valves may be installed in drainage systems equip-
ped with primary ventilation systems, as an alternative to air-
circulation or indirect secondary ventilation systems designed
to reduce vacuums in the piping system. Only ventilation
valves conforming to DIN EN 12380 may be used.
Ventilation valves may be used as a substitute for primary-
ventilated pipes in single/two-family residential properties or
buildings with comparable residential units with a drainage
system only for residential waste water, provided there is at
least one downpipe running up to above roof height. In this
case, the downpipe with the largest nominal diameter should
be aerated/ventilated at above roof height.
Ventilation valves should be installed in such a way that
allows them to be replaced without structural building work
in the event of a defect. A sufficient supply of air must be
guaranteed.
This area of application is subject to the operating temperatu-
re and installation position specified in Table 2, in accordance
with DIN EN 12380.
Ventilation valves must not be used in areas endangered by
backflow or for the ventilation containers (e.g. pump stations).
Fig. 25: Use of ventilation valves in single/two-family
residential properties.
Table 20: Operating conditions and designations of ventilation valves.
Operating conditions and designation of ventilation valves
Determining factor
Area/position
Designation
Location:
Usable beneath flow level
a
of the connection pipe of the connected
Yes
A
drainage sources
No
B
Temperatures
-20°C to +60°C
I
0°C to +60°C
II
0°C to +20°C
III
a
Flow level within the meaning of the term “backflow level”, as defined in DIN EN 12380
NOTE Valves corresponding to Designation I are designed for use in places where the ambient temperature at the point
of installation (e.g. unheated attics) may drop to below freezing point over several days.
Downpipe
Airvents
Airvents
