There is today, with meters of modern type, no reason to use a check valve or a safety valve.
A reverse current cut-out is a form of check valve that prevents the storage battery from discharging through the generator.
Attached to each pipe at its point of entrance is a check valve to spray the steam through the mash.
F is a box carrying a check valve to keep the water from issuing from the boiler when the apparatus is not at work.
There is one check valve in the supply pipe which conducts the water from the tank or well to the pump cylinder.
When the plunger returns, the check valve closes, and the water is forced into the feed-pipe to the boiler.
There was a check valve in the bottom—a door that opened inwardly, to take in water and fragments of rock when need arose.
It is a sort of check valve that permits current to flow through the charging circuit in one direction only.
Some steam-heating systems have a check valve in the pipe which returns water to the boiler.
What is a check valve, and what is its use, and where located?