FloPlast AF32 - Installation Best Practices and Limitations

8
Figure 5 Examples of drain venlaon provisions
6.3 To prevent self-siphonage a connecon to the AF32 or AFE32 valve is required within 1500mm of the trap (see
Figure 4).
6.4 To prevent induced siphonage in a row of wash-basins, a AF32 or AFE32 valve can be ed between
the two wash-basins furthest from the discharge stack (see Figure 4).
6.5 Air admiance valves should not be used as the only venlaon to sepc tanks or cesspools.
6.6 The valve should be installed within the building where it is easily accessible but not subject to inter-
ference from vandals.
6.7 If the valve is to be installed in, or in close proximity to, an habitable space where noise of operaon may cause a
nusiance, then consideraon must be given to the use of a suitable form of sound insulaon.
6.8 In addion, other than those shown in Figure 5, stacks should not be ed with the valves when the connecng
drain(s) are subject to periodic surcharging or are ed with intercepng traps. An open-topped discharge stack or
venlang stack should be used in such cases.
Up to four dwellings fitted with
FloPlast AVE110, AF110 or
AX110 valves
Index
C - Conventional vent stack
G - Gully
F - FloPlast 110mm or 82mm AAV
A - Access
Single multi-storey building with
FloPlast AVE110, AF110 or
AX110 valves
More than one multi-storey building
with FloPlast AVE110, AF110 or
AX110 valves
Row of 20 dwellings with
FloPlast AVE100, AV110, AF110 or AX110 valves
11 to 20 vent at head and mid point
5 to 10 vent to head
up to 4th
non conventional
vent stack
A
A
F
G
F
G
A
A
A
A A
G
C
A
A
C
G
G
F
F
G
F
G
A
A
A
A
20th
13th
12th 11th
10th
9th
8th 3rd 2nd
1st
head of
drain
A
A
F
G
A A
F
F
F
GGG
A
A
C
F
F
A
A
A
C
A
A A
A
F
A
A
F