Kiwa Watermark Certification and Testing for Backflow Prevention Safety Devices
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Who is Kiwa Watermark certification and testing for?
The Kiwa Watermark product certification for backflow prevention safety devices is important for contractors, architects, installers, plumbers and anyone working for a municipality or housing association involved in installing drinking water installations.
About Kiwa Watermark for backflow prevention safety devices
Kiwa Watermark quality mark certified backflow prevention devices guarantee compliance with the requirements of Dutch and international standards for products used for drinking water distribution. In addition, the products meet the hygienic requirements, as set by the Dutch government.
Only products that meet all requirements - including an agreed constant quality level - can be certified by Kiwa with the Kiwa Watermark. In many cases, a Kiwa Watermark certificate is a base for certification in other European countries, for example, DVGW (Germany), CSTB (France), ÖVGW (Austria) and SVGW (Switzerland).
Protection of dangerous devices
The protection of so-called dangerous appliances is an important part of the protection of Dutch drinking water. Due to the nature of the liquids contained in these appliances, they can pose a risk to the drinking water in the installation to which they are connected.
Hazardous devices that occur are therefore assessed; the assessment is aimed at identifying the risk and prescribing appropriate security. In the performance of their statutory audit task, drinking water companies then check whether the correct security is indeed in place. More information can be found at infodwi.nl.
Field of application Kiwa Watermark product certification
Kiwa Watermark for backflow prevention devices are intended to be used in drinking water installations with an operating pressure of 1MPa (10 bar) and a maximum water temperature of 65 ºC.
Kiwa Watermark certification evaluation guidelines
The Kiwa Watermark evaluation guidelines include all requirements set by the market and government for products that come into contact with drinking water: both the private, functional requirements and the public, hygienic requirements.
Aerators (BRL-K628)
The products are intended for usage in tap water installations with a maximum operating pressure and water temperature as defined in this table:
The evaluation guideline BRL K628 is a certification scheme for the Kiwa product certificate for aerators, family D, types A, B and C:
- Family D, type A: in-line anti-vacuum valve (DN 8 - DN 80);
- Family D, type B: pipe interrupter with atmospheric vent and moving element (DN 15 and DN 20);
- Family D, type C: pipe interrupter with permanent atmospheric vent (DN 10 and DN 20).
Backflow protection devices (BRL-K629)
The Kiwa product certificate for backflow protection is for check valves meant as backflow protection device for fluid class 2 and p>atm. The functional requirements for these products are based on NEN-EN 13959.
The evaluation guideline BRL-K629 is intended for the following backflow types:
- Family E, type A, controllable check valve with verification connection
- Family E, type B, non-controllable check valve, including check valve cartridge
- Family E, type C, controllable double check valve with verification connection
- Family E, type D, non-controllable double check valve, including check valve cartridge
Download BRL-K629 Evaluation Guideline (Dutch)
Controllable backflow protection devices, Family B, Type A (BRL-K646)
The Kiwa product certificate for backflow protection is for controllable backflow prevention meant as backflow protection device for fluid class 4 and p>atm. The functional requirements for these products are based on NEN-EN 12729.
Together with necessary peripherals (upstream and downstream valves, sieve, 3 control taps) these products are used as backflow prevention units Family B, Type A in tap water installations.
The evaluation guideline BRL K46 is a certification scheme for the Kiwa product certificate for controllable backflow protection devices, family B, type A.
Non-controllable backflow preventers, Family C, Type A (BRL-K648)
The Kiwa product certificate for backflow protection is for non-controllable backflow prevention meant as backflow protection device for fluid class 3 and p>atm. The functional requirements for these products are based on NEN-EN 12367.
Together with necessary peripherals (upstream valve and strainer) these products are used as backflow prevention units Family C, Type A in tap water installations.
The evaluation guideline BRL K48 is a certification scheme for the Kiwa product certificate for non-controllable backflow preventers, with different pressure ranges - family C, type A.
Kiwa safety certificate for Technical Water Protection for appliances with contamination risk (BRL-K14011)
The Kiwa Safety Certificate guarantees an appliance can be directly connected to the drinking water system in a safe way, making this certificate important for buyers, inspection bodies (water companies and government inspection services (IL&T)), installers, advisors and the supervisory body and supplier/producers.
The certificate is based on the following standards:
- NEN-EN 1717 ‘Protection against the pollution of drinking water in water systems and general requirements for devices preventing backflow pollution';
- NEN 1006 ‘General requirements for tap water systems (AVWI)’;
- Kiwa Evaluation guidelines for backflow protection;
- Water worksheet 3.8 ‘Security devices for (dangerous) appliances’. (See downloads.)
The BRL-K14011 evaluation guideline specifies the requirements for the prevention of contamination by manufactured appliances intended for direct connecting to drinking water installations. These appliances shall be protected with a backflow prevention unit, adapted to the level of risk of the appliance with the containing fluids, at the connection point of the drinking water installation.
The backflow prevention unit shall prevent that water upstream from the protection point will be contamination as a result of backflow from the appliances with a contamination risk and/or downstream connected applications or installation.
The evaluation guideline BRL K14011 is a certification scheme for the Kiwa safety certificate for technical water protection for appliances with contamination risk.
Download BRL-K14011 Evaluation Guideline
Download BRL-K14011 Clarification Clause
Backflow protection devices Family A, type A, B, C, D, F and G (BRL-K14030)
The Kiwa pros certificate for backflow protection devices Family A, type A, B, C, D, F and G is aimed at suppliers, installation companies and companies in the industry.
The BRL-K14030 evaluation guideline applies to series-produced backflow preventers belonging to Family A, in various types as included in NEN-EN 1717 and provided with a downstream storage tank not intended for drinking water storage.
The products are intended as a provision to prevent pollution of potable water installations due to backflow.
The products are intended for direct connection to drinking and/or hot water installations with a maximum working pressure of 1 MPa (10 bar) and a maximum temperature of 70°C.
The evaluation guideline BRL K14030 is a certification scheme for the Kiwa product certificate for Backflow protection devices family A, Type A, B, C, D, F and G in accordance with NEN-EN 1717, in combination with a holding tank not intended for drinking water.
Kiwa Domestic Water Safety Certificate
The Kiwa Domestic Water Safety Certificate guarantees an appliance can be directly connected to the drinking water system in a safe way, making this certificate important for buyers, inspection bodies (water companies), installers, advisors and the supervisory body and supplier/producers.
The certificate is based on the following standards:
- NEN-EN 1717 ‘Protection against the pollution of drinking water in water systems and general requirements for devices preventing backflow pollution';
- NEN 1006 ‘General requirements for tapwater systems (AVWI)’;
- Kiwa Evaluation guidelines for backflow protection;
- Water worksheet 3.8 ‘Security devices for (dangerous) appliances’.
Contact our certification experts in this area to study your question and work with you to find the right solution to obtain the Kiwa Watermark quality mark.
Kiwa Watermark certification process
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Additional information
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