éénhendel

Éénhendel is a Dutch term meaning single-handle or one-lever, used to describe devices and mechanisms that are operated with a single control lever. The expression is common in technical and consumer contexts, where it distinguishes single-lever operation from multi-lever or multi-handle systems.

In practice, éénhendel is most familiar in the plumbing sector, where éénhendelkranen (single-handle faucets) allow users to adjust both water flow and temperature with one lever. This contrasts with twee- of tweehendel kranen (two-handle faucets), which use separate levers for hot and cold water. The concept is also applied to other equipment and valves that use one control to regulate multiple functions or parameters, such as industrial valves, machinery controls, or consumer devices with a single control interface.

Etymology and spelling: the term combines één (one) and hendel (handle or lever). The accent on é in één is customary in Dutch when the numeral is used as a standalone determiner or in certain compound spellings.

See also: tweehendel (two-handle) in reference to opposite configurations; kraan (faucet) and hendel (lever) for related terminology.