
Bulletin 71.1:CS400
17
Table 13. Type CS400 Relief Table, 14 in. w.c. / 35 mbar Setpoint, Internal Registration
ORIfICE SIzE REGULATOR SET PRESSURE
MAXIMUM INLET PRESSURE TO kEEP OUTLET PRESSURE AT/OR bELOW
(1)
In. mm In. w.c.
3/16 4.8
14 35
87 6.0 107 7.4
1/4 6.4 45 3.1 56 3.9
5/16 7.9 30 2.1 37 2.6
3/8 9.5 18 1.2 23 1.6
1. Relief values obtained by blocking regulator open per orice.
Figure 11. Type CS400IR Relief Curves (Blocked per Orice Size) at 14 in. w.c. / 35 mbar Set Pressure
0.5 /
34
1 /
69
1.5 /
103
2 /
138
2.5 /
172
3 /
207
0
3/16 in. /
4.8 mm
ORIfICE
1/4 in. /
6.4 mm
ORIfICE
5/16 in. /
7.9 mm
ORIfICE
1/2 in. /
13 mm
ORIfICE
5/8 in. /
16 mm
ORIfICE
3/8 in. /
9.5 mm
ORIfICE
3/4 in. /
19 mm
ORIfICE
100 /
6.9
50 /
3.4
10 /
0.69
20 /
1.4
30 /
2.1
40 /
2.8
60 /
4.1
70 /
4.8
80 /
5.5
90 /
6.2
110 /
7.6
120 /
8.3
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