AUK2 or AUK3 air
gap as
appropriate
Washbasin,
sink or bath
Single check valves if
required
Cold water
supply
Hot water
supply
Combination tap: -
Cutaway section
showing cold and
hot water mixing in
the body of the tap
Diagram 1
BIDETS WITH OVER-RIM SUPPLY ARRANGEMENTS
(a) Bidets installed in domestic locations of
the over – rim type, that have no
ascending spray and/or flexible hose
may be supplied with cold and hot water
through single or combination tap
assemblies from either a supply pipe or
distributing pipe providing that a Type
AUK2 air gap is provided between the
outlet of the water fitting and the
spillover level of the bidet and shall also
comply with (c) below.
(a) Bidets installed in premises other than
domestic locations of the over – rim
type, that have no ascending spray and
/ or flexible hose where a higher fluid
category of risk may be present, may
be supplied
with cold and hot water through single or combination tap assemblies from either a
supply pipe or a distributing pipe providing that a Type AUK3 air gap is provided
between the outlet of the water fitting and the spillover level of the bidet as (a)
above and shall also comply with (c) below.
(c) In case of a bidet equipped with a single outlet (single flow) mixing tap, shall
also be installed in accordance with IRN R010. See Diagram 1 below
Bidets, including WCs adapted as bidets,
incorporating and ascending spray inlet or
utilising a flexible hose or an arrangement with
a spray or jet, are a fluid category 5 risk in
that the ascending spray inlet could be
contaminated with urine or other matter and
the spray or jet handset could be deposited in
the bidet or WC. Bidets of this type must not
be supplied with water from a cold or hot
water supply pipe or a common distributing
pipe. The zone of backflow risk is shown and
the highest part of this zone must be not less
that 15mm below any cistern serving the
bidet. See Diagram 2 below.
05
Hose and spray
Bidet
FL
Independent
distributing
pipes for cold
and hot water
Zone of
backflow risk
Not less than 15mm
WP
air gap
BIDETS (INCLUDING WCS ADAPTED AS BIDETS) WITH SUBMERGED
WATER INLETS AND / OR FLEXIBLE HOSE WITH SPRAY OR JET
HANDSET FITTINGS
Diagram 2
Type AG
05
Summary of Contents for QD 1/2 C
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