4. Calculate the friction factor and head loss hi (m) for 177.2 feet of ½ inch type L copper tube with water at 56°C flowing at a rate of 1.22 imp gallon/min. h

The Figure shown below is a parallel pipeline system with two branches used to supply lubricating water to the bearings. The main line and two branches use the same size of pipes. The pressures at section 1 and section 2 are   and  ,  respectively. The resistance coefficients for two bearings are   and  .  The cross section areas of two branch pipes are   .  The energy loss caused by friction can be ignored. The energy loss caused by one bend is  . (4)   Calculate the energy loss    for branch b_________

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Calculate the resistance coefficient K for a check valve swing type placed in a 6 inch schedule 40 steel pipe if water at 100º F flowing with a velocity of 10 ft/s