Word.ws English Dictionary

jockey valve

jockey valve noun: a manually-controlled auxiliary valve on the regulator of a steam engine to control smaller amounts of steam than can be managed by the main valve.

Noun

jockey valve (plural jockey valves)

  1. A manually-controlled auxiliary valve on the regulator of a steam engine to control smaller amounts of steam than can be managed by the main valve.
    • Jockey-valves of locomotive regulators are small auxiliary ports which can be opened by a suitable movement of the regulator-handle, when it is desired to pass no more than a limited amount of steam to the cylinders, as, for example, over level or slightly falling track with light loads. A...1946 March and April, “The Why and The Wherefore: Jockey-Valves”, in Railway Magazine, page 129

Forms of jockey valve

pluraljockey valves

Questions about jockey valve

What does jockey valve mean?
Jockey valve means a manually-controlled auxiliary valve on the regulator of a steam engine to control smaller amounts of steam than can be managed by the main valve.
What part of speech is jockey valve?
Jockey valve is a noun.
What is the plural of jockey valve?
The plural of jockey valve is jockey valves.

Words near jockey valve in the dictionary

  1. jockey pumps
  2. jockey shorts
  3. jockey squat
  4. jockey strap
  5. jockey straps
  6. jockey valve
  7. jockey valves
  8. jockey's cap
  9. jockeydom
  10. jockeyed
  11. jockeyed for position

Source and license

Adapted from Wiktionary: jockey 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.

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