We found 18 dictionaries that define the word check valve:

General (11 matching dictionaries)

1. check valve: Merriam-Webster
2. check valve: Oxford Learner's Dictionaries
3. check valve: Collins English Dictionary
4. check valve: Wordnik
5. check valve: Wiktionary
6. check valve: Infoplease Dictionary
7. Check valve, check valve: Dictionary.com
8. Check valve: Wikipedia, the Free Encyclopedia
9. check valve: Stammtisch Beau Fleuve Acronyms
10. check valve: FreeDictionary.org
11. check valve: TheFreeDictionary.com

Business (1 matching dictionary)

12. Construction Term Glossary (No longer online)

Computing (1 matching dictionary)

13. check valve: Encyclopedia

Slang (1 matching dictionary)

14. check valve: Urban Dictionary

Tech (4 matching dictionaries)

15. AUTOMOTIVE TERMS (No longer online)
16. Schlumberger Oilfield Glossary (No longer online)
17. Pool Glossary (No longer online)
18. CHECK VALVE: Power Engineering

Definitions from Wiktionary (check valve) ▸ noun:  A valve in a pipeline which allows the liquid or gas to flow in one direction only. Similar: invert, lanes, waterline, keyline, flowpath, overbend, loop line, transition point, centerline, thalweg, more... Opposite: one-way valve, non-return valve, backflow preventer Phrases: ball check valve, Double check valve, more... ▸ Words similar to check valve ▸ Usage examples for check valve ▸ Idioms related to check valve ▸ Wikipedia articles (New!) ▸ Words that often appear near check valve ▸ Rhymes of check valve ▸ Invented words related to check valve