abusanitair ventilair air-admittance valves

abusanitair ventilair air-admittance valvesType-tested and monitored according to DIN EN 12380, type classification Class A I, by LGA Bautechnik, No. 0420151

Pipe ventilation

explained

The essentials

Air-admittance valves can be used in waste water pipes following theacknowledged rules of technology to reduce negative pressure.

In line with the harmonisation of waste water standards at European and national level, the installation recommendations are contained in DIN EN 12056-2 and DIN 1986-100.

Air-admittance valves can also be installed in deviation from the recommendations if when installing waste water systems certain structuralrequirements need to be taken into consideration. These can arise as aresult of the German Heat Insulation Ordinance, for building conservationreasons or because of structural requirements. Deviations from the standardare also possible in the case of contractually regulated installation.

Air-admittance valves must meet the requirements of DIN EN 12380 and belabelled with the relevant type class.

The relevant applicable national standards must be adhered to.

2

Requirements for the use of air-admittance valves in areassusceptible to frost

• No damage to the building as a result ofpipes penetrating delicate roofs

• No heat lost, thanks to closed system

abusanitair ventilair air-

admittance valves are classified

in the highest type classification

Class A I and can be used for

installation below the backflow

level in a temperature range

from -20°C to +60°C. This

classification is manifested by

the attached CE mark.

The logo “Type-tested and

monitored” by LGA QualiTest

GmbH documents third-party

control and compliance with

DIN EN 12380.

The results of the regular

inspection are recorded annually

in a report.

The new generation of

abusanitair ventilair air-

admittance valves gives you the

required level of safety, with just

three models to cover all

eventualities. Only air-admittance valves which are classified in Class I may be installed.Requirement of DIN EN 12056-1, section5.8, regarding frost protection:Drainage systems must be planned andinstalled in such a way as to avoid the riskof their being destroyed or ceasing tofunction as a result of frost damage.

abusanitair ventilair

Installation recommendationaccording to DIN 1986-100

Advantages of installing mechanical air-admittance valvesin the position of the old rooftopventilation system fittings

(particularly relevant to old buildingswhere waste water pipes are not insulated, and top floor flats)

• Particularly suitable for low-energy houses and passive houses

• Reduces the risk of open main ventilation pipes freezing up

• Creates the necessary conditions for the ventilation of waste systems insidebuildings. Water drains away more efficiently invulnerable pipe areas

• If there is a fire, the risk of fire andfumes spreading via the drainagesystem is reduced, as the chimneyeffect is eliminated

• Creates flexibility in the planning of drainage system ventilation

• Cost savings thanks to quick installation

Illustration from DIN EN 12056-2: installation possibilities for air-admittance valves

11 Bathtub / 22 Washbasin / 33 WC / 44 Floor drain / 55 Air-admittance valve / 66 Discharge pipe / 77 Connection pipe / 88 Underground pipe / 99 Main ventilation pipe / 1100 Recirculating ventilationpipe / 1111 Urinal

Installation possibilities for air-admittance valves in downcomer pipes • In detached and semi-detached houses

or in comparable household waste waterusage situations

• Prerequisite is that at least one downcomer pipe with the shortest flowdistance to the collecting drain at rooflevel is two-way vented

Installation possibilities for air-admittance valves in multi-storey pipes• As indirect secondary ventilation,

replaces all recirculation ventilationsystems

• At the end point of multiple connectionpipes

• In single connection pipes

3

Classification of air-admittancevalves according to DIN EN 12380

Nominal diameters for

abusanitair ventilair

DN 32 DN 50DN 40

In order to achieve the required frost protection (down to -20°C), the upper partof the polystyrene packaging is mountedon the valve as a frost protection cover.

The description abusanitair ventilair air-admittance valve with construction surveillance approval, Class A I, means:• Tested by a third party, according to

DIN EN 12380 and classified in Class I• Subject to an annual sample test with

third-party supervision by the LGA (State Trade Office of Bavaria)

Class A means:• Suitable for installation below the back-

flow level (= the highest level that the water can reach in a drainage system). The air-admittance valve must be testedat 30 Pa, 500 Pa and 10,000 Pa.

Class I means:• Suitable for a temperature range of

between -20°C and +60°C

The description tested according toDIN EN 12380, Class A II, means:• The air-admittance valve has been

tested by us according to the requirements of DIN EN 12380

Class A means:• Suitable for installation below the

backflow level

Class II means:• Suitable for a temperature range of

between 0°C and +60°C

Class A I:Installation below backflow level is possible,temperature range: -20°C to +60°C

Class A II:Installation below backflow level is possible,temperature range: 0°C to +60°C

Class A III:Installation below backflow level is possible,temperature range: 0°C to +20°C

Class B I:Installation only above backflow level,temperature range: -20°C to +60°C

Class B II:Installation only above backflow level,temperature range: 0°C to +60°C

Class B III:Installation only above backflow level,temperature range: 0°C to +20°C

Air-admittance valves are used in order tocreate a balance of pressure in gravitydrainage systems.

• Absolutely vertical installation is essential; slanting or horizontal air-admittance valves will not function

• Accessibility must be ensured, for maintenance purposes

• In case of installation in concealed locations, a sufficient air supply must beavailable

• If fitted to a horizontal waste pipe, theair-admittance valve must be installed atleast one pipe-thickness vertically abovethe level of the pipe

• When installed underneath a roof withair insulation, the ambient temperaturemay not fall below -20°C

• Outdoor installation is not permissible

Our air-admittance valves open when thereis negative pressure in the pipe system,and close again after ventilation to become impermeable to odours andwater. If there is positive pressure or abalance of pressure in the system, thevalve remains closed. If the cross-sectionof the drainage system is reduced, a backflow develops. The positive pressurethat is created means that the valveremains closed. The required intake of aircan thus not take place.

• In areas where there is a risk of backflow

• In drainage systems which are connected to domestic sewage treatment plants (chamber pits)

• On discharge pipes in buildings in whichbathrooms/toilets are connected to thepipe on more than 3 floors

• On reservoirs, e.g. lifting or separatorsystems, which do not have a vent atroof level

• In installation situations where only ahorizontal or slanting position is possible

DN 70 DN 80 DN 100

Installation description

Explanation

Function

Frost protection

Installation situations whereair-admittance valves cannotbe used

Our systems have been designed in sucha way that they can each be fitted with arubber connector to pipes of three different sizes: DN 100 – 80 – 70 and DN 50 – 40 – 32. The nominal connection diameters have been selected to make itpossible to fit the valve to a pipe of diameter DN 80 and DN 40 by inserting it into a sleeve. If the valve is to be inserted into a pipe without a sleeve, ofnominal width DN 100 or DN 50, the rubber connector has to be used. Fornominal diameters DN 70 and DN 32, therubber connector is used to allow thevalve to be pushed onto a pipe without asleeve. For non-standard pipe dimensions,adapters must be used.

4

Art. no. 76 00 99

Art. no. 76 03 99 and Art. no. 76 45 99

down to -20°C

incl. frost protection cover

Art. no. 76 34 99Art. no. 76 36 99 without ventilair air-admittance valve

Concealed boxeswith a high-grade cover plate and integrated shadow gap to ensure a sufficient supply of air. Cover plate can be easily removed for inspection purposes. Colour of the cover plate: RAL 9016, with structure. Corrosion-protected concealed boxmade from hot-dip galvanised sheet steel for indoor installation according to the relevant standards.

Art. no. 76 33 99Art. no. 76 35 99 without ventilair air-admittance valve

Type-tested and monitored according to DIN EN 12380, type classification Class A I, by LGABautechnik, No. 0420151, temperature range from -20°C to +60°C, with sealed connectionsfor the dimensions stated, and a polystyrene frost protection cover.

ventilair air-admittance valves – product range

Air-admittance valve stations for installation in damp and dry locations

Art. no. 76 00 99suitable for DN 32 - 50 volumetric flow 5 l/s



Concealed box with ventilair air-admittance valveDimensions: W x H x D = 166 x 204 x 130 mmType-tested and monitored according to DIN EN 12380, type classification Class A I,by LGA Bautechnik, No. 0420151, temperature range from -20°C to +60°C, with sealed connections for the dimensions stated, and a polystyrene frost protectioncover. Volumetric flow 19 l/s.DN 70 - 100

Concealed box with ventilair air-admittance valveDimensions: W x H x D = 104 x 154 x 100 mmType-tested and monitored according to DIN EN 12380, type classification Class A I,by LGA Bautechnik, No. 0420151, temperature range from -20°C to +60°C, with sealed connections for the dimensions stated, and a polystyrene frost protectioncover. Volumetric flow 5 l/s.DN 32 - 50

5

Art. no. 76 10 99DN 32 air-admittance valve, volumetric flow 2 l/s



DN 40 Art. no. 76 04 99

DN

40/5

0/56

Tested according to DIN EN 12380, Class A II, suitable for installation below the backflow level, temperature range: 0°C to+60°C, volumetric flow up to 3.3 l/s


Art. no. 76 15 99DN 90 air-admittance valve, volumetric flow 3.3 l/s

Art. no. 76 14 99DN 100 air-admittance valve, volumetric flow 3.3 l/s

DN 50 Art. no. 76 05 99 DN 56 Art. no. 76 07 99

Tested according to DIN EN 12380, Class A II, temperature range: 0°C to +60°Cfor connection to standard traps of DN 32 in order to improve drainage

Art. no. 76 30 9990° waste bend, L = 250 mm, DN 32, with 11/4" cap nut for connection to pipe trap.Chromed brass with chromed1/2" air-admittance valve, testedaccording to DIN EN 12380,Class A II, volumetric flow 2 l/s

Art. no. 76 31 99Straight waste outlet, L = 250 mm, DN 32, for connecting to bottle traps.Chromed brass with chromed1/2" air-admittance valve, testedaccording to DIN EN 12380,Class A II, volumetric flow 2 l/s

Art. no. 76 37 99DN 32 air-admittance valve, chromed, with adapter and 1/2"thread, for replacing defective components or components which do notcomply with the relevant standards, tested according toDIN EN 12380, Class A II, volumetric flow 2 l/s

Type-tested and monitored according to DIN EN 12380, type classification Class A I, by LGABautechnik, No. 0420151, with additional test according to DIN EN 274, temperature range up to+95°C, volumetric flow 5 l/s.Suitable for retrofitting underneath sinks for improving drainage, trap connection 11/2".

Plastic trap connectors with ventilair air-admittance valves

Air-admittance valves for the ventilation of individual objects according to DIN EN 12380

Chromed trap connectors with chromed air-admittance valves according to DIN EN 12380

Art. no. 76 32 99Extension pipe with sleeve, L = 125 mm, DN 32, chromedbrass with chromed 1/2" air-admittance valve, testedaccording to DIN EN 12380,Class A II, volumetric flow 2 l/s

6

Vent atroof levelDowncomer pipe 1

Air-admittance valve

Underground pipe

Downcomer pipe 2Air-admittance valve

Air-admittance valve Air-admittance valve

Calculation of the air flow for a downcomer pipe in a 3-storey block of flats

Vent atroof level



Underground pipe

45° branch in old buildings

Air flow for the abusanitair ventilair air-admittance valves

Through-flow quantity in I/s with 2.5 mb negative pressure in the waste pipe system

DN Art. no. 76 00 99 Art. no. 76 03 99 Art. no. 76 45 99

100 – 19.0 I/s 33 I/s

80 – 19.0 I/s 33 I/s

70 – 17.0 I/s 29 I/s

50 5.0 I/s – –

40 4.5 I/s – –

32 4.0 I/s – –Calculation formulas

Qww = K x ∑DU Qa = Qww x 8

DU 21.6 = 4.64 x K 0.5 = Qww 2.32 l/s

Required quantity of air Qa = 2.32 l/s x 8 = 18.59 l/s

Example calculation for abusanitair ventilair air-admittance valves

The following sanitary DU I/sappliances are connected

6 WCs with up to 7.5 l 12.0 (6 x 2.0)

6 washbasins 3.0 (6 x 0.5)

3 bathtubs 2.4 (3 x 0.8)

3 showers 1.8 (3 x 0.6)

3 washing machines 2.4 (3 x 0.8)

DU = 21.6 l/s

DU = connection value for sanitary appliances in l/s

K = drainage index: frequency of use of sanitary appliances

Qww = waste water drainage in l/s

Qa = required air flow in l/s

7

DN 100

Negative pressure

DN 70

IDID

Inside diameters of 113 to 127 mmPush the ventilair with additional sealed connection asfar as it will go into the openend of the pipe. Bend thestainless steel fixing straps andfix them to the air-admittancevalve and pipe with the4 supplied screws(see DN 100).

DN 70Push the ventilair with sealedconnection as far as it will goonto the open end of the pipeand secure in place with ahose clip.(Not included in delivery package).

DN 80Push the ventilair withoutsealed connection as far as itwill go into a sleeve socket (notincluded in delivery package).Push the sleeve onto the openend of the pipe. Bend the supplied stainless steel fixingstraps and fix them to the air-admittance valve and sleevewith the 4 supplied screws. Alsofasten the sleeve to the pipe.

DN 100Push the ventilair with sealedconnection as far as it will gointo the open end of the pipe.Bend the supplied stainlesssteel fixing straps and fix themto the air-admittance valve andpipe with the 4 suppliedscrews.

Cut off the existing vent hoodfrom the pipe. Ensure a neat,square cut.

Art. no 76 44 99 brick-red

Art. no. 76 52 99 black

ventilair air-admittance valve for outdoor use

Installation of ventilair air-admittance valve for outdoor use DN 70 /80 /100 and inside pipe diameters of 113-127 mm

The solution for combating disturbing smells coming fromfreely vented downcomer pipes

� on roof terraces � next to skylights and dormer

windows � next to roof windows on gable roofs � on terraces and balconies

Tested according to DIN EN 12380,Class A I, volume flow 24 l/s, frost-resistant and weatherproof, fits DN 70/80/100, with additionalseal for inside diameters from 113 to 127 mm

8

ventilair active – two-way vent valve with activated carbon filter pad

Vent at roof level withventilair for outdoor use

Venting of the liftingsystem with ventilair active

Upper edge of streetBackflow level

or inside aroof areawith ventilair

Inflow pipe

Pumping off

Vent at roof level withventilair for outdoor use

Ventilation of the liftingsystem with ventilair active

or inside aroof areawith ventilair


Inflow pipe

9

In accessible external areas, for filteringarising gases in domestic sewer systems,toilet lifting systems, existing open vents,e.g. on oil tanks, grease traps, etc.

The ventilair active functions in a 2 waysystem.

This means that when positive pressuredevelops in systems, e.g. when filling lifting systems or containers, a balance ofpressure outwards occurs (see Fig. 1below and Chart 1 on page 10).

At the same time the gases and smells arising are held back by the activated carbon.

When pumping off lifting systems or containers negative pressure occurs in thesystem, which the ventilair active compensates with air flowing in from outside (see Fig. 2 below and Chart 2 onpage 10).

The filter insert is a multi-layer fabric, impregnated with active carbon. Life of the carbon filter: depending on loading, up to several years.

A toilet, a shower and a washbasin maybe connected to such a system. Here it ispossible to connect the ventilair activedirectly in the room where the above itemsare set up.

The ventilair active is not suitable fortwo-way venting of waste waterdowncomer pipes.

Suitable for vertical or horizontal installation (see Fig. 3 and 4 on page 10).

When installed horizontally the ventilairactive must be assembled with weather protection (e.g. concealed box art.no. 76 36 99).

We recommend also checking the activated carbon filter system when carrying out the required servicing ofsystems in which ventilair active is installed.

When odours are noticed, the filter pad isexhausted. Open the cap and replace thefilter insert.

For safety reasons installation should onlybe carried out in accessible outdoor areas,so that when the activated carbon is saturated no gases can get into the livingarea.

Installation Note

Function

Venting of a lifting system Ventilation of a lifting system

Filter insert

Fig. 1 Fig. 2

Service

Installation possibilities

Use in toilet lifting systemsfor limited deployment according to DIN EN 12056-4:

With lifting systems �� 20 m3 pumpingcapacity an air-admittance valve mustadditionally be installed in the inflowpipe (see Fig. 2 below and Chart 2 onpage 10).

ventilair active performance data

250500 750 1000

15002000

3000

4000

5000

6000

7000

8000

9000

10.000

0

2000

4000

6000

8000

10000

12000

8.2m3/h

11.0m3/h

13.7m3/h

16.9m3/h

19.4m3/h

21.6m3/h

25.5m3/h

30.2m3/h

37.4m3/h

46.0m3/h

50.0m3/h

52.9m3/h

58.6m3/h

64.8m3/h

2.28l/s

3.05l/s

3.80l/s

4.69l/s

5.39l/s

6.00l/s

7.08l/s

8.39l/s

10.39l/s

12.80l/s

13.90l/s

14.69 l/s

16.28l/s

18.00l/s

Flow rate

Posi

tive

pres

sure

in P

a

Ratio of air flow rate – positive pressure, measured at LGA

0

50

100

150

200

250

300

350

0.2 m3/h 4.2 m3/h 5.6 m3/h 8.4 m3/h 12 m3/h 24.1 m3/h 28 m3/h

0.06 l/s 1.17 l/s 1.56 l/s 2.33 l/s 3.33 l/s 6.69 l/s 7.77 l/sIntake volume

Neg

ativ

e pr

essu

re in

Pa

> 20 m3

Ratio of air intake volume – negative pressure, measured at LGA

10

Example:

At a pressure volume of 8.2 m3

= 2.28 l/s, positive pressure of 250 Pa (= 25 mm of watercolumn) occurs before the ventilair active.

Example:

At an intake volume of 3.33 l/snegative pressure of 250 Pa (= 25 mm of water column)occurs in the system.

With lifting systems �� 20 m3

pumping capacity an air-admittance valve mustadditionally be installed in theinflow pipe

Venting via roof

or within roofarea withventilair


Venting via roof

or within roofarea withventilair


Weatherproof installation e.g. concealed box Art. no. 76 36 99

ventilair active – vertical installation ventilair active – horizontal installation

Chart 1

Positive pressure(pressure drag)

Chart 2

Negative pressure

Fig. 3 Fig. 4

Art. no. 76 46 99

ventilair active with sealed connection, complete with filter insert, for use in unpressurised areas, fits sizes DN 70 / 80 / 100

Art. no. 76 55 99

ventilair active with 2 " external thread, complete with filterinsert, for use at pressures of up to 1 bar, with two additionalreducers for 11⁄2" and 11⁄4" external threads, fits connections with2", 11⁄2" and 11⁄4" internal threads.

Art. no. 76 47 99

Replacement filter insert for ventilair active

Art. no. 76 46 99

Art. no. 76 55 99

The ventilair active is available in two different versions:

11

AG = external thread

IG = internal thread

970

733

GB

·3·V

I/08

Abu-plastKunststoffbetriebe GmbH

Am Bahnhof 20 · D-96472 RödentalPhone: +49(0)9563/930Fax: +49(0)9563/93227e-mail: [email protected]

abusanitair ventilair air-admittance valves

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