A coupling is a device that connects two or more hoses together so that they can be used as one unit. The top of the coupling has a threaded male connector and the bottom has female connector. The male connector is screwed into the female connector, which is then tightened with a wrench or pliers until it is firmly attached.
The purpose of an air hose coupling is to provide a connection between two different hoses. There are many different types of couplings, such as quick disconnect couplings, flareless couplings, and slip-on couplings.
A steam engine is a machine that uses the heat energy to force a piston to move back and forth. It generates the power needed for the machine.
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