IPA: /ˈvælv.lɛt/
KK: /ˈvælvˌlɛt/
A small device that controls the flow of liquid or gas.
The engineer installed a valvelet to regulate the water pressure in the system.
Valvelet → It is formed from "valve" (from Latin *valva*, meaning a folding door or flap) and the diminutive suffix "-let" (meaning small or little). The word "valvelet" refers to a small valve or a small flap that controls the flow of a substance.
Think of a 'small flap' ('valvelet') that controls the flow of something, just like a valve does.