Matched context for prevent back and meter

The page lists matched contexts for prevent back and meter.

Share - prevent back	Share - meter	Phrase
7.78%	18.28%	{prevent back or meter} fuel [perform operation]
22.16%	5.50%	{prevent back or meter} flow [perform operation]
16.84%	2.89%	valve [does] {prevent back or meter}
4.47%	3.87%	chamber [location] {prevent back or meter}