4.12 A tilting disc check valve is to be installed in a 4-nom sch 40 steel pipeline.

For the valve being considered, the angle α = 15°. The fluid being transported through the pipeline is a 20% ethylene glycol solution at a 20°F. The volumetric flow rate of the ethylene glycol is 180 gpm.

a. Specify the size and ASME class of the check valve required for this situation.

b. Determine the total head loss (ft) associated with the addition of the check valve and any required reducers to the pipe.