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Flanged BA Protection Device BA 009 DN65 and DN80

The BA 009 protection device consists of two check valves in series with a chamber in between containing a relief valve. This configuration prevents backflow of contaminated water even if both check valves are contaminated by maintaining a reduced pressure in the intermediate zone. The relief valve will open to create an atmospheric separation between drinking water and the user network in this scenario. The first check valve, second check valve, and relief valve can be easily dismounted for maintenance.

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83 views1 page

Flanged BA Protection Device BA 009 DN65 and DN80

The BA 009 protection device consists of two check valves in series with a chamber in between containing a relief valve. This configuration prevents backflow of contaminated water even if both check valves are contaminated by maintaining a reduced pressure in the intermediate zone. The relief valve will open to create an atmospheric separation between drinking water and the user network in this scenario. The first check valve, second check valve, and relief valve can be easily dismounted for maintenance.

Uploaded by

kruhak.dominik
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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DRINKING WATER PROTECTION

BA PROTECTION

Flanged BA protection device BA 009


DN65 and DN80
15
The BA 009 protection device consists of two check valves in series
with a chamber in between containing a relief valve. The device
functions on the basis of maintaining a reduced pressure in this
intermediate zone (see picture). Even if a counterpressure exists on
the outlet side and both check valves are contaminated, the unit will
still prevent the backflow of dirty water. The relief valve will in this
case open and create an atmospheric separation between drinking
water and user network. This situation is shown in the picture.

Dismountable check valves


The first check valve, the second check valve and the relief valve are
easy to dismount, which makes it easy to perform maintenance.

Dimensions Intermediate zone


BA 009 DN65 and DN80

Inlet Outlet

First check valve Second check valve

Relief valve

Pressure loss curves BA 009 DN65 and DN80


110
Delta P [kPa]

009DN65
100

90 009DN80

80

70

60

50

40

30

20

10

0
0 10 20 30 40 50 60 70 80
Flow [m3/h]
009DN65 009DN80

Sylax lug type butterfly valve Y333P strainer with relief valve
Article number Type Article number Type
600011686 Sylax lug DN65 600003282 Y333P DN65
600011691 Sylax lug DN80 600003283 Y333P DN80

Article numbers BA 009 DN65 and DN80 Material specifications BA 009 DN65 and DN80
Article number Type Weight in kg Body cast iron with epoxy coating
406065000 BA 009 DN65 39,0 Flange bore according to EN1092-2 / DIN 2532
406080000 BA 009 DN80 39,5 Check valve seats plastic
Seals rubber
Approvals BA 009 DN65 en DN80 (device) Relief valve seat stainless steel
Belgaqua, Kiwa
Technical specifications BA 009 DN65 and DN80
Max. system pressure PN 10 (10 bar)
Nom. operating temperature 60 °C

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