What type of fitting is used to connect two pipes of different diameters?
A. Tee
B. Union
C. Coupling
D. Bell reducer
A. Incorrect. A tee allows the splitting or joining of flows.
B. Incorrect. A union joins two sections of threaded pipe but allows them to be disconnected without cutting or disturbing the position of the pipe.
C. Incorrect. Coupling is used to connect two threaded pipe sections or hoses.
D. Correct. A bell reducer is used to connect two pipes of different diameters.
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