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Backflow Preventer with integrated shut-off facility, BA295D-AS/ASC

Backflow Preventer with integrated shut-off facility, BA295D-AS/ASC

Backflow preventers of this type are suitable for the protection of drinking water systems against back pressure, back flow and back syphonage.

Product Description

Backflow preventers of this type are suitable for the protection of drinking water systems against back pressure, back flow and back syphonage. They are used to protect taps. Fluids up to and including liquid category 4 to EN 1717 are protected. 

Technical Properties

Approvals DVGW
Media Drinking water
Liquid category (EN1717) class 4
DN size 10 mm
Port diameter 1/2 inch
Mounting position vertical
Minimum inlet pressure 1.5 bar
Max. media temperature 65 oC
Body material brass, dezincification resistant
Additional Descriptions
  • Highspeed maintenance: replacement kit, all BA functional parts in one housing, replacement/maintenance without time-consuming test procedure
  • Highspeed installation: easy and quick installation / retrofit
  • Due to integrated shut-off facility installation directly into the pipework possible
  • Optimized outlet position, thereby bending of the connected flexible tube is prevented
  • Integrated inlet strainer
  • Optimal protection of the drinking water supply system
  • Inlet check valve and discharge valve are combined in one cartridge
  • Rotatable housing - connection always in the right position
  • Minimal maintenance required, because the valve cartridge is completely replaceable
  • Low maintenance effort, because the strainer and the valve cartridge are completely replaceable without draining the system
  • Optimized design prevents water Stagnation in normal operation
  • Compact construction
  • Low pressure loss and high flow rate
  • Triple security - two check valves and a discharge valve sepa-rate the backflow preventer into three pressure zones
  • Meets KTW regulations for drinking water
  • Easy and quick Installation/ retrofit
  • Threaded connections; inlet: R1/2 (ISO 2999), outlet: G1 (ISO 228-1)
  • 1" IG to 3/4" AG threaded adapter included
Maximum inlet pressure 10 bar

Certifications and Awards

Related Material

Products

Product Type Body finishing
Approval reference
Chrome-plated, discharge pipe connection

BA295D-1/2ASC
chrome plated

NW-6373CQ0046

Product

BA295D-1/2AS

NW-6373CQ0347

Accessories and replacement parts

Accessories

Image Description Product Type Downloads
Test kit. Analogue pressure measuring device with differential pressure display. With case and accessories, ideal for inspection and maintenance of backflow preventer type BA. TKA295  
Maintenance-set for BA295STN type backflow preventers for use with Test kit TK295 resp. TKA295 WS295STN  

Spare parts

Image Description Product Type Downloads
Shutoff facility AS295D  
Replacement unit - brass AE295D  
Strainer S295D  
Check valve insert for safety valves 3/4" 2110200  
Set of blanking plugs (5 pieces each) brass PS295STN  
Seal brackets (10 pieces) PS295D  
Retaining clip (10 pieces) HK295D