Section 11
Specifications
20413013
8-2012/Rev 10
11-10
Table 11-6
Horsepower Requirements
Orifice Size
inches (mm)
45,000 psi
(3,103 bar)
50,000 psi
(3,447 bar)
55,000 psi
(3,792 bar)
60,000 psi
(4,137 bar)
0.020 (0.508) 73.9 86.6 99.9 113.8
0.021 (0.533) 81.5 95.4 110.1 125.5
0.022 (0.559) 89.4 104.8 120.9 137.7
0.023 (0.584) 97.8 114.5 132.1 150.5
The horsepower requirements for operating multiple orifices are determined by adding the
requirements in Table 11-6 for each orifice. Examples are shown below.
Orifice Size
inches (mm)
Number of
Orifices
Operating
Pressure
Calculation
Total
Horsepower
0.009 (0.229) 3 55,000 3 x 20.2 60.6
0.015 (0.381)
0.010 (0.254)
1
1
50,000 48.7 + 21.6 70.3