User guide
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Backflow Preventers with flanges
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Backflow Preventers with flanges
Backflow preventers of this type are suitable for the protection of drinking water systems against back 
pressure, back flow and back syphonage. Fluids up to and including liquid category 4 to EN 1717 are 
protected. They can be used for residential buildings, industrial and commercial purposes within the 
scope of their specification. The stainless steel housing provides increased corrosion protection.
Standard version with PN 10 flanges
Accessories
Reduced-pressure-zone backflow preventer with flange connections, BA298-F 
Approvals DVGW, SVGW, WRC
Media Water
Application class (EN1717) class 4
Body material stainless steel
Port connection type flanges
Max. media temperature 65
o
C
Static pressure PN10
Minimum inlet pressure 1,5 bar
Mounting position horizontal
Additional description • European approvals in all connection sizes
• Optimum protection of the drinking water supply system
• Easy access to all inner components
• Stainless steel housing gives increased corrosion protection 
• Easy Maintenance due to optimized construction
DN size Flow capacity Kvs
Type
mm
65 45
BA298-65FA
80 54
BA298-80FA
100 85
BA298-100FA
150 191
BA298-150FA
Test kit. Electronic pressure measuring device with digital indicator, runs by a battery. 
With case and accessories, ideal for inspection and maintenance of backflow 
preventer type BA.
TK295
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










