retaining valves
retaining valves is the plural of retaining valve.
Meaning of retaining valve
Noun
retaining valve (plural retaining valves)
- A device that retains some air pressure in a train's air brake cylinders even when the automatic brake valve is set to the fully-released position, used on steep downgrades to allow a degree of continuous braking effort to be maintained without depleting the pressure in the train's brakepipe (which would result in the loss of nearly all braking ability, causing a runaway).
- Synonyms:
- retainer
Questions about retaining valves
- What is retaining valves the plural of?
- Retaining valves is the plural of retaining valve.
Words near retaining valves in the dictionary
Source and license
Adapted from Wiktionary: retaining valves (page history and authors); retaining valve (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
Last updated:
Cite this entry: “retaining valves.” Word.ws, https://word.ws/retaining_valves. Based on Wiktionary, CC BY-SA 4.0.
