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SeriesCodeDescription
D2QD2NELES TRUNNION MOUNTED BALL VALVE SERIES D2, CLASS 150-300, WITH Q-TRIM VARIANT (Q-TRIM)

The D-series valve with Q-Trim is intended for applications where high Cv and excellent rangeability are required, combined with effective noise/cavitation attenuation. The Q-D2 valves are supplied as unidirectional one-seated version with specially designed ball control element to achieve improved noise/cavitation attenuation in gas, steam and liquid applications. The control seat is spring-loaded, capable of easing the contact on ball when throttling to eliminate friction, but assuring durable tightness at shut-off. Size range is DN 250...900 (10"...36") in pressure class ANSI 150, DN 100...900 (4"...36") in ANSI 300.

Cv-values

SIZERelative opening h
DNINCHRN10 %20 %30 %40 %50 %60 %70 %80 %90 %100 %
RN = Reduction Number
100407.8417.630.642.256.582127199344425
1506018.843.871.91091592263254998691170
20080327612418827439056186314962020
25010054126207313457650935143825023520
300120781812974506569331343206635905010
3501409722536955981411591667256544255780
400160129301494747108815492228342859228090
45018017741367910271497213130654715818511300
500200225522857129718902690387059531034913700
6002403457991310198428924117592291091591022300
70028039591815002280332447316805104681803826300
750300500117019202907423760318675133452312334000
9003607251690278042046127872112545192983353652300

Cv/d2-values

SIZERelative opening h
DNINCHRN10 %20 %30 %40 %50 %60 %70 %80 %90 %100 %
RN = Reduction Number
100400.0660.0660.10.140.160.170.180.190.2050.205
150600.0660.0660.10.140.160.170.180.190.2050.205
200800.0660.0660.10.140.160.170.180.190.2050.205
2501000.0660.0660.10.140.160.170.180.190.2050.205
3001200.0660.0660.10.140.160.170.180.190.2050.205
3501400.0660.0660.10.140.160.170.180.190.2050.205
4001600.0660.0660.10.140.160.170.180.190.2050.205
4501800.0660.0660.10.140.160.170.180.190.2050.205
5002000.0660.0660.10.140.160.170.180.190.2050.205
6002400.0660.0660.10.140.160.170.180.190.2050.205
7002800.0660.0660.10.140.160.170.180.190.2050.205
7503000.0660.0660.10.140.160.170.180.190.2050.205
9003600.0660.0660.10.140.160.170.180.190.2050.205

FL-values

SIZERelative opening h
DNINCHRN10 %20 %30 %40 %50 %60 %70 %80 %90 %100 %
RN = Reduction Number
100400.910.920.930.930.930.920.890.830.70.63
150600.910.920.930.930.920.910.880.810.670.56
200800.910.920.930.930.920.910.880.820.680.57
2501000.910.920.930.930.920.910.880.80.660.53
3001200.910.920.930.930.920.910.880.80.660.54
3501400.910.920.930.930.930.910.890.820.690.6
4001600.910.920.930.930.920.910.890.820.680.57
4501800.910.920.930.930.920.910.880.80.650.54
5002000.910.920.930.930.920.90.880.80.640.54
6002400.910.920.930.930.920.90.870.780.620.49
7002800.910.920.930.930.920.910.890.820.680.55
7503000.910.920.930.930.920.90.880.80.650.5
9003600.910.920.930.930.920.90.880.80.640.47

XT-values

SIZERelative opening h
DNINCHRN10 %20 %30 %40 %50 %60 %70 %80 %90 %100 %
RN = Reduction Number
100400.820.830.830.830.820.790.680.50.320.25
150600.820.830.830.820.80.750.630.460.290.21
200800.820.830.830.820.80.750.640.470.30.22
2501000.820.830.830.820.80.740.610.440.280.2
3001200.820.830.830.820.80.740.620.450.280.2
3501400.820.830.830.830.810.760.660.480.310.23
4001600.820.830.830.820.80.760.650.470.30.22
4501800.820.830.830.820.80.740.610.440.270.2
5002000.820.830.830.820.80.730.60.430.260.2
6002400.820.830.830.820.790.720.570.40.240.18
7002800.820.830.830.820.80.760.650.480.30.21
7503000.820.830.830.820.80.730.60.430.270.18
9003600.820.830.830.820.80.730.60.430.260.17

z-values

SIZERelative opening h
DNINCHRN10 %20 %30 %40 %50 %60 %70 %80 %90 %100 %
RN = Reduction Number
100400.560.550.540.520.510.480.440.380.30.27
150600.560.550.540.520.490.460.420.360.280.24
200800.560.550.540.520.490.460.420.370.290.24
2501000.560.550.530.520.490.460.410.360.280.22
3001200.560.550.530.520.490.460.420.360.280.22
3501400.560.550.540.520.50.470.430.370.290.25
4001600.560.550.540.520.490.470.430.370.290.24
4501800.560.550.530.510.490.460.410.350.280.22
5002000.560.550.530.510.490.460.410.350.270.23
6002400.560.550.530.510.480.450.40.340.260.2
7002800.560.550.540.520.490.470.430.370.290.23
7503000.560.550.530.510.490.460.410.350.270.21
9003600.560.550.530.510.490.460.410.350.270.2

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File creation day: 22.4.2024 (day.month.year)