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Drinking Water Protection

Drinking water is our most important resource. It is needed every day for drinking, cooking and washing. However, in order to keep it clean and hygienic, and therefore harmless to health, it must be protected in the pipes of the drinking water systems. A vital factor for a hygienically clean water supply is the protection of the drinking water in the pipeline system from contamination by non-drinking water. This is governed by the standard DIN EN1717 Drinking water protection and water hygiene according to EN1717.

DIN EN1717 divides all liquids into five categories based on the potential hazards for the person who might be exposed to this water. It also establishes the need for safeguarding to guarantee reliable drinking water protection.​

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Benefits

Applications & Products

Category 1 (Drinking water)

Category 2 (altered drinking water, no health hazard)

Category 3 (moderate health hazard)

Category 4 (strong health hazard, non-biological)

Category 5 (severe health hazard, biological)


​With Honeywell you have a partner to protect you against hazards from all fluid categories and that offers the right solution for safety fittings.

Protection up
to liquid category
Threaded connection
Flange connection
Drinking water application
Heating water application
Use in
domestic area
Use in
commercial area
Use in
industrial area
Housing material
Group/type according to
DIN EN 1717
Ball valve for backflow prevention
RV277
Backflow preventer
RV281
Backflow preventer
RV283P
System breakers
CA295
Refill combination
NK295C
Pipe separator
R295
System breakers
BA295D-3/4WH
System breakers
BA295D-1/2ASC
System breakers
BA295CS
System breakers
BA295S
System breakers
BA298I-F
System breakers
BA300
Fully automatic
Pipe separator

R295HP-F
Refill unit
NK300S
Safety barrier station
CBU140
Safety barrier station
CBU144/145

CBU146
2 2 2 2,3 2,3 2,3 2,3,4 2,3,4 2,3,4 2,3,4 2,3,4 2,3,4 2,3,4 2,3,4 2,3,4,5 2,3,4,5 2,3,4,5
R 1/2“–R 2“ R 1/2“–R 2“ R 1/2“–R 3/4“ R 1/2“ R 1/2“–R 2“ R 3/4“ R 1/2“ R 1/2“–R 2“ R 1/2“–R 2“ R 1/2“ R 3/4“
DN40–DN300 DN65–DN150 DN65–DN200 DN65–DN200 DN50–DN80 DN50–DN80
Brass Brass Grey cast iron Brass Brass Red brass Brass Brass Brass Brass Stainless Steel Grey cast iron Grey cast iron Brass
EA EA EA CA CA GA BA BA BA BA BA BA GB BA AB AB AB