throttle valve
A valve that restricts fluid flow, used in engines and piping systems.
エンジンの絞り弁が詰まっている。
The engine's throttle valve is clogged.
Standard modern spelling.
Contains the outdated kanji 瓣; rarely used in modern texts.
Compound of 絞り (shibori, 'squeezing, throttling') + 弁 (ben, 'valve').