A solvent $(\mathrm{SG}=0.9, \mu=0.8 \mathrm{cP}$ ) is transferred from a storage tank to a process unit through a $3 \mathrm{in}$. sch 40 pipeline that is $2000 \mathrm{ft}$ long. The line contains 12 elbows, four globe valves, an orifice meter with a diameter of $2.85 \mathrm{in}$., and a pump having the characteristics shown in Figure 8.2 with a $7 \frac{11}{4} \mathrm{in}$. impeller. The pressures in the storage tank and the process unit are both $1 \mathrm{~atm}$, and the process unit is $60 \mathrm{ft}$ higher than the storage tank. What is the pressure reading across the orifice meter in in. $\mathrm{H}_{2} \mathrm{O}$ ?

Figure 8.2

Size 2 3 R & C 1% in. Pedestal 3500 rpm 4' minimum NPSH 400 Impeller dia. Total head feet 8% in 300 200 18% in 7% in 7% in 6% in. 6% in. 100 50 0 S1 MISSION VALVE AND PUMP COM Semi-open impeller Dia. 6-8% in. Eye area 9.8 in. Max. sphere 1% in. Maximum normal capacity for slurries and abrasive fluids Curve 8 7 ft 30% 10ft 40% 15 ft 145% 50% 20 ft 25ft, 50% 45% 50 50 60 HP 40 HP 50 HP 30 HPV 15 HP 20 HP 25 HP 100 200 300 400 40% 500 600 700 Capacity-U.S. gallons per minute