Question: Two streams of water join together at a reducing tee where the upstream pressure of both is 40 pig. Stream 1 is flowing in a 1-in. pipe at 50 lbdmin, stream 2 in a 2-in. pipe at 100 lbm/min, and stream 3 exits from the tee in a 3- in. pipe. The straight run flow is from stream 2 to stream. Calculate the force of the pipe threads on the tee if the downstream pressure is 35 psig. Use positive coordinates in the direction of flow as shown in the following figure.
