pilot valve
noun1
A small hand-operated valve to let in liquid to operate a valve that is difficult to turn by hand.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
noun
A small hand-operated valve to let in liquid to operate a valve that is difficult to turn by hand.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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