Data Sheet

Bulletin 71.1:CS200
4
Table 3. Inlet Pressure Ratings and Flow and Sizing Coefficients
TYPE
ORIFICE SIZE
MAXIMUM OPERATING INLET
PRESSURE TO OBTAIN
OPTIMUM PERFORMANCE
(1)(2)
MAXIMUM
EMERGENCY INLET
PRESSURE
(2)
FLOW
COEFFICIENTS
(WIDE-OPEN)
C
1
IEC SIZING COEFFICIENTS
Inch mm psig bar psig bar C
g
C
v
X
T
F
D
F
L
CS200
1/8 3.2 125 8.6
175 12.1
12 0.4 30 0.53 0.87
0.89
3/16 4.8 125 8.6 24 0.8 30 0.58 0.82
1/4 6.4 125 8.6 44 1.52 29 0.53 0.85
3/8 9.5 60 4.1 102 3.3 31 0.6 0.83
1/2 13 40 2.8 172 4.4 39 0.97 0.72
CS205
and
CS206
1/8 3.2 125 8.6 17 0.6 28 0.5 0.82
3/16 4.8 125 8.6 37 1.4 27 0.49 0.8
1/4 6.4 125 8.6 65 2.2 30 0.5 0.8
5/16 7.9 100 6.9 88 2.7 33 0.65 0.79
1. Inlet pressures based on lock-up performance. For maximum inlet pressure values with optimum regulating performance refer to the applicable Flow Capacity table.
2. To comply with ANSI B109.4 relief requirements, the maximum inlet pressure may need to be reduced. Reference the Relief Performance Tables 8, 11, 16, and 21.
SERIES BODY SIZE, NPS END CONNECTION BODY MATERIAL
PRESSURE RATING
psig bar
CS200
3/4
3/4 x 1
3/4 x 1-1/4
1
1 x 1-1/4
1-1/4
NPT Gray Cast Iron 175 12.1
Table 2. Body Sizes, Material, End Connection, and Pressure Rating
TYPE NUMBER OPTIONS
C S 2 0
OVERPRESSURE PROTECTION MODULE
0 Without Overpressure Protection Module
5 With Secondary Seat™ Protection
6
With Secondary Seat Protection with bleed to indicate Secondary Seat
is functioning
PRESSURE REGISTRATION
I Internal Registration
RELIEF
N Non-Relief
R Internal Relief
Table 1. Available Configuration