Both our cold water pipes and our fittings are DVGW certified, ensuring the highest quality and safety for drinking water. Our high-quality irrigation system is particularly pressure-resistant up to 10 bar and heat-resistant up to 20 °C. Quality is very important to us. Therefore, our cold water pipes are especially resistant to aging, corrosion, and deposits, as well as to algae and bacterial growth. Easily install a garden irrigation system or lay our cold water pipes wherever you need water. In our range of hoses and fittings, you will find everything you need for watering your outdoor area. No special tools required! Professional installation since 1922. Technology that connects. W. Kirchhoff GmbH is your reliable partner in sanitary and heating construction, offering a range of installation products including fittings, pipe systems, siphons, and much more. High-quality products and coordinated installation systems have been impressing our customers for 100 years.