An apparatus by which a stream of water is forced into a steam boiler.
An object that realizes a dependency injection.
One who injects (himself or herself with) psychoactive drugs.
Any of various devices that are used to inject something.
A valve, tap or faucet which regulates the flow of liquid or gas through a pipe.
A main shutoff for water to a home from a municipal supply. Usually these valves exist in pairs, one outside the property boundary and one inside the property boundary.
To control the gas pressure in (an oil well) by keeping the well closed in and the gas confined except during set intervals when the oil is flowed or pumped.