Entry from British & World English dictionary
A valve in an internal combustion engine mounted alongside the cylinder.
- Three more prototype cars were built, chassis number A3 was the third Aston Martin ever built and is the oldest in existence with a 1.5 litre 11 hp four cylinder side valve.
- Twenty of these engines had side valves; the remainder were overhead valve engines.
- Gasoline engines with overhead valves are less polluting than those with side valves.
For editors and proofreaders
Line breaks: side valve
What do you find interesting about this word or phrase?
Comments that don't adhere to our Community Guidelines may be moderated or removed.