kopbuis

Kopbuis is a Dutch term used primarily in mechanical, plumbing and piping contexts. Literally translated, it means “head pipe” or “end pipe” and refers to a short section of pipe or tubing that forms the connecting end of a run. The kopbuis serves as the interface between piping and another component, such as a valve, flange, hose, nozzle or piece of equipment. Depending on the application, the kopbuis may be manufactured with various end configurations, including threaded ends, flanges, socket or welding neck connections, or compression fittings.

In practice, a kopbuis is chosen for its ability to provide a reliable, leak-tight connection and to accommodate alignment with adjoining parts. Materials and finishes vary by use and include steel, stainless steel, copper, PVC, and other plastics. The dimensions and connection type are guided by relevant industry standards and the specific requirements of the installation, such as pressure rating, temperature, and fluid compatibility.

Common applications include water supply and distribution, heating, ventilation and air conditioning systems, gas piping, and process piping in industrial settings. Installation may involve cutting, deburring, threading or socketing, followed by secure fastening and, where required, sealing with appropriate gaskets or adhesives.

Terminology can vary by region and discipline, and in some contexts the term kopbuis may be used interchangeably with related terms such as end fitting, cap, or adapter, depending on the exact form and function of the end portion.