
building the future
Diagram a.
Di gr m b.
Benefits
The Building Regul tions, Document H1 sub
section 1.31, stipul tes th t ny soil nd vent
pipe inst lled extern lly within three metres of
ny opening window, is required to termin te
minimum of 900mm bove the window.
This new development to the tr dition l
intern l Air Admitt nce V lve llows
soil st ck fitted with n extern l Air Admitt nce
V lve to termin te within three metres of
window opening. This llows the pipe to
termin te t the s me height s if it were
inst lled intern lly i.e. 200mm minimum bove
the highest wet entry point to the soil vent pipe.
(di gr ms & b).
The use of n extern l Air Admitt nce V lve
elimin tes the need for the inst ller to work nd
h ndle pipe bove the roof line, m king it
e sier to comply with Work t Height (WAHR)
nd M nu l H ndling Regul tions.
Remov l of unsightly ventil tion st ck.
Elimin tes the need for the inst ller to work
& h ndle pipe bove the roof line.
(Work t Height (WAHR) nd M nu l
H ndling Regul tions).
Reduced inst ll tion time.
M teri ls cost s ving - bends, pipe, vent
cowl.
Instruction leaflet for AX110 External Air A mittance Valve
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