• These requirements are applicable to gas stoppers as independent component or as part for installation in another component, for the application in plastic piping systems for the distribution of natural gas according to the “regeling gaskwaliteit”...
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  • This approval requirement describes the requirements with regard to flexible hose assemblies for use in installations for natural gas with a pressure of no more than 200 mbar in accordance with the NPR 3378-11 Code of Practice
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  • Insulation union couplings in gas conduits AR 154
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  • Hydrogen is an interesting substitute to natural gas. Especially since research demonstrates that existing natural gas infrastructures can be made suitable for the distribution of hydrogen relatively easily. Kiwa anticipates with a new approval requirement (AR) 214 "Suitability for hydrogen gas".
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  • 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.
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  • 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.
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  • The water supply capacity of water-based extinguishing systems shall be checked periodically to confirm whether the required capacity is still available. Kiwa R2B has a custom build test/measuring trailer equipped with a calibrated capacity meter and auxiliary hoses and fittings.
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  • (BRL) K23001-05 Product Certification Scheme for nonpressurized condensed aerosol generators and components used in fixed fire extinguishing systems.
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  • Kiwa R2B inspects gaseous fire extinguishing systems based on the CCV inspection schemes and compliance with standards; prevent fire damage to computer and other equipment! If you want to know more about inspection of an extinguishing gas system, click here.
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  • Welding is a special manufacturing process which is used in sectors to reveal structures which cannot be manufactured as one piece. The EN ISO 3834 series standards are also standards that define all Quality requirements for the operation of this particular process.
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