Data Sheet

DandDAValves
D100039X012
Product Bulletin
51.2:D
March 2014
4
Table 5. Flow Coefficient (C
v
at Maximum Valve Plug Travel)
VALVE SIZE,
NPS
PORT DIAMETER,
mm (INCHES)
EQUAL PERCENTAGE D EQUAL PERCENTAGE DA
Flow Up Flow Down
1
6.4 (0.25)
9.5 (0.375)
12.7 (0.5)
19.1 (0.75)
1.66
4.03
6.51
12.3
3.21
7.06
11.2
16.8
2
6.4 (0.25)
9.5 (0.375)
12.7 (0.5)
19.1 (0.75)
25.4 (1)
31.8 (1.25)
1.66
4.03
6.82
14.1
23.7
34.5
3.21
7.06
12.1
21.2
31.8
44.9
Table 6. Port, Yoke Boss, Stem Diameters, and Rated Travel Specifications in mm (Inches)
VALVE
SIZE,
NPS
PORT
DIAMETER
STANDARD OPTIONAL
Yoke Boss
Diameter
Stem
Diameter
Rated
Travel
Yoke Boss
Diameter
Stem
Diameter
Rated
Travel
1
6.4 (0.25)
9.5 (0.375)
12.7 (0.5)
19.1 (0.75)
54 (2-1/8) 9.5 (3/8) 19.1 (0.75)
71 (2-13/16) 12.7 (1/2) 19.1 (0.75)
90 (3-9/16) 19.1 (3/4) 19.1 (0.75)
2
6.4 (0.25)
9.5 (0.375)
12.7 (0.5)
19.1 (0.75)
25.4 (1)
31.8 (1.25)
71 (2-13/16) 12.7 (1/2) 19.1 (0.75) 90 (3-9/16) 19.1 (3/4) 19.1 (0.75)
Figure 1. Typical Constructions
W0540-2
W0938-2