# A liquid flows upward through a valve situated in a vertical pipe. Calculate the differential pressure (kPa)

## Question:

A liquid flows upward through a valve situated in a vertical pipe. Calculate the differential pressure (kPa) between points A and B. The mean velocity of the flow is 4.1 m/s. The specific gravity of the liquid is 1.2. The pipe has constant diameter. The valve has a minor loss coefficient of 4.0. Assume that major losses (i.e., head losses in the pipe itself) can be neglected. Point A is located 3.2 meters below point B. Choose the closest answer (kPa):

(a) 3.4,

(b) 6.6,

(c) 40,

(d) 65,

(e) 78.

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**Related Book For**

## Engineering Fluid Mechanics

**ISBN:** 9781118880685

11th Edition

**Authors:** Donald F. Elger, Barbara A. LeBret, Clayton T. Crowe, John A. Robertson