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We found 9 dictionaries with English definitions that include the word vacuum valve:
Click on the first link on a line below to go directly to a page where "vacuum valve" is defined.

General (8 matching dictionaries)

1. vacuum valve: Merriam-Webster.com [home, info]
2. vacuum valve: Collins English Dictionary [home, info]
3. vacuum-valve, vacuum valve: Wordnik [home, info]
4. vacuum valve: Wiktionary [home, info]
5. vacuum valve: Dictionary.com [home, info]
6. Vacuum valve: Wikipedia, the Free Encyclopedia [home, info]
7. vacuum valve: Free Dictionary [home, info]
8. Vacuum valve: Dictionary/thesaurus [home, info]

Tech (1 matching dictionary)

9. Vacuum valve: AUTOMOTIVE TERMS [home, info]

Quick definitions from Wiktionary (vacuum valve) ▸ noun:  A non-return valve allowing atmospheric air into a boiler, if a cold boiler reduces its internal pressure on cooling down. ▸ Words similar to vacuum valve ▸ Usage examples for vacuum valve ▸ Idioms related to vacuum valve (New!) ▸ Words that often appear near vacuum valve ▸ Rhymes of vacuum valve ▸ Invented words related to vacuum valve