Flow Coefficients - PIETRO FIORENTINI GOVERNOR 30051 Use And Maintenance Manual

4.5.1 - FLOW COEFFICIENTS

The flow coefficients (Cg) of governors without filter are given in Tab. 4.21. (as per DIN EN 334):
Flow coefficients (governors without filter)
Version
[mm]
Diameter
[inches]
Cg
(Standard Version)
Cg
(Zero/Ratio versions)
Cg
(Goval version)
Pu ≤ 350 bar
Pd ≤ 35 mbar
The flow coefficients (Cg) of governors with filter are given in Tab. 4.22. (as per DIN EN 334):
Flow coefficients (governors with filter)
Version
[mm]
Diameter
[inches]
Cg
(Standard Version)
Cg
(Zero/Ratio versions)
Cg
(Goval version)
Pu ≤ 350 bar
Pd ≤ 35 mbar
LOW-PRESSURE GAS REGULATOR
EN
Use, maintenance and warning manual
Compact High flow rate
15 20 25 15
1/2" 3/4" 1" 1/2"
80 100 130 190
- - - 160
56 70 90 135
Compact High flow rate
15 20 25 15
1/2" 3/4" 1" 1/2"
68 82 110 135
- - - 116
56 70 90 108
| DESCRIPTION AND OPERATION
20 25 32 40
3/4" 1" 1" 1/4 1" 1/2
240 285 680 710
205 240 580 610
170 200 545 570
20 25 32 40
3/4" 1" 1" 1/4 1" 1/2
158 200 460 570
135 170 390 485
140 162 440 550
| REV. A
50 65 80 100
2" 2" 1/2 3" 4"
1300 1650 2000 3500
1100 1400 1700 2980
1200 1480 1800 3150
Tab. 4.20.
50 65 80 100
2" 2" 1/2 3" 4"
1150 1450 1600 2850
980 1250 1380 2430
1100 1380 1500 2700
Tab. 4.21.
32