Building materials

The valves are meant as a device to prevent backflow. Check valves with a nominal diameter smaller then or equal 50 mm are intended for application in drinking water installations with a maximum constant temperature of 65°C and a with a maximum of one hour with a water temperature of 90° C.

The products are intended to be used for the transport of drinking water and a working pressure of 1MPa (1,000 kPa), with a water temperature up to 65˚C and a maximum water temperature up to 90˚C for a period of maximum 1 hour.

ISO 9001 Quality Management Systems Certification with Kiwa: improve your performance, meet customers’ needs and increase your profit.

Kiwa Expert Centre Polymers is your partner for independent testing, certification and quality related services regarding plastics in pipes and fittings for sewage and drainage.

Your local Kiwa office also has extensive knowledge of international standards and market developments to offer various services regarding the certification of your products in various countries.

The plumbing fittings are being used to make capillary soldering and/or thread connections, in tap water installations, household gas installations and in heating installations. The plumbing fittings are intended for use in combination with copper...

Kiwa Expert Centre Polymers is your partner for reliablity engineering of plastic and rubber products. The realisation of reliable polymer and rubber products starts in the design or engineering stage. There the fundamental choices are made that have a major influence on the functioning of the product in the end.

Use the Kiwa Water Mark as a producer or supplier. If you want to market yourself with products that meet all requirements; both functional as well as all legal hygienic requirements specified in the “Materials and chemicals in the supply of drinking water and warm tap water Regulation” by the Dutch government.

OHSAS 18001 certification with Kiwa: reduce accidents, improve conditions and attract talent.

The evaluation guideline BRL 2020-2 includes all relevant requirements on the basis of which Kiwa will handle applications for certification and the issuing of KOMO product certificates for products of thermoplastic elastomers intended as pipe joint seals for non-pressure waste water applications.

When things go wrong, one needs a quick and reliable answer to a series of questions. For this experts are needed who have experience in a broad range of products and applications. Often a certain failure has occurred earlier in a total different application.

The products are intended to be used for general applications such as construction and equipment manufacturing, as well as for the transport of liquids and gases in pipe installations, equipment manufacturing, tank construction and petrochemicals.

Determination of the wather-tightness of solar energy systems in roofs.

Innerhoses flexible connecting hoses.

Sealing materials for metallic threaded joints. Part 3: Unsintered PTFE AR 31-3

Bendable hose assemblies AR 1

Elastomeric seals EN 681-1 | Testing, inspections

Polyethylene (PE) valves for plastic piping systems for the supply of gaseous fuels AR 136

External coatings for the corrosion protection of buried or immersed pipelines and joints AR 87

In the bitumen industry, the BDA Bending Tester® is generally accepted as an essential test to determine the quality of modified bitumen.