Data Sheet

Bulletin 71.2:310A
7
Figure 7. Typical Wide-Open Monitor Installation
Figure 8. Typical Working Monitor Installation
Table 3. Maximum Travel
Table 4. Wide-Open Flow Coefficients for Relief Valve Sizing with Body Size Piping for Relief Valve Sizing
FLEXIBLE WIDE-OPEN MONITOR ARRANGEMENT THAT PERMITS
WIDE-OPEN MONITOR TO BE EITHER UPSTREAM OR
DOWNSTREAM OF THE WORKING REGULATOR
24B4134
B2445_2
MINIMUM PIPING WIDE-OPEN MONITOR ARRANGEMENT THAT
REQUIRES WIDE-OPEN MONITOR ALWAYS TO BE
UPSTREAM OF WORKING REGULATOR
A0714_2
TRIM SIZE
BODY SIZE, INCHES (DN)
1 (25) 2 (50) 3 (80) 4 (100) 4 x 6 (100 x 150)
30%
C
g
238 835 1810 3080 4400
C
v
8.6 30.6 64.6 114.9 181.8
C
1
27.7 27.3 28 26.8 24.2
50%
C
g
313 1240 2810 4620 6600
C
v
10.3 46.3 99.3 172.4 280.9
C
1
30.4 26.8 28.3 26.8 23.5
70%
C
g
- - - - 1800 3780 6660 9000
C
v
- - - - 69 129 213 360
C
1
- - - - 26.2 29.3 31.3 25
100%
C
g
612 2610 5510 8830 16200
C
v
22 95 200 322 661
C
1
28.1 27.5 27.5 27.4 24.5
BODY SIZE, INCHES (DN) MAXIMUM TRAVEL, INCH (mm)
1 (25) 0.5 (13)
2 (50) 0.875 (22)
3 (80) 1 (25)
4 (100) 1.125 (28)
4 x 6 (100 x 150) 1.5 (38)