Data Sheet

Bulletin 71.1:CSB400
5
Table 4. Differential Strength (DS) Pressure Ratings and Flow and Sizing Coefcients
Table 3. Integral Strength (IS) Pressure Ratings (Applicable only to applications where inlet rating cannot exceed outlet rating)
TYPE
MAXIMUM ALLOWABLE PRESSURE
(1)
/
MAXIMUM EMERGENCY INLET PRESSURE
MAXIMUM OPERATING INLET PRESSURE
(1)
P
S
P
umax
bar psig bar psig
CSB400, CSB400F, CSB404 and CSB404F
4.0 58 4.0 58
CSB420, CSB420F, CSB424 and CSB424F
CSB450 and CSB454
CSB410 and CSB414
CSB403, CSB403F, CSB423 and CSB423F
CSB403 and CSB423
1. FortheIntegralStrength(IS)version,themaximumvalueofP
S
and P
umax
shouldbesimilartothePSDusedfortheDifferentialStrength(DS)version.
TYPE
SPECIFIC MAXIMUM
ALLOWABLE
PRESSURE/MAXIMUM
EMERGENCY OUTLET
PRESSURE
MAXIMUM
OPERATING INLET
PRESSURE
MAXIMUM EMERGENCY
INLET PRESSURE
(1)
ORIFICE
SIZE
FLOW
COEFFICIENTS
WIDE OPEN
IEC SIZING
COEFFICIENTS
P
SD
P
umax
P
S
bar psig bar psig bar psig mm Inch C
g
C
v
C
1
X
t
F
D
F
L
CSB400F and CSB404F
4.0 58
6.0 87 12 174
17.5 11/16 428 11 43 1.16 0.84 0.90
CSB403F and CSB423F 6.0 87 10 145
CSB403 and CSB423
10 145 10 145CSB410 and CSB414
CSB430 and CSB434
CSB400 and CSB404
10 145 12 174
CSB420F and CSB424F
CSB420 and CSB424
16 232 20 290
CSB450 and CSB454
1. IforderedwithaPN16angedconnection,P
S
ratingisamaximumof16bar/232psig.P
S
ratingmaybelowerthan16bar/232psigasindicatedbythistable.
Table 5. CSB400 Series Primary Regulator Outlet Pressure Ranges
TYPE
OPERATING PRESSURE
RANGES, W
d
PART
NUMBER
SPRING
COLOR
SPRING
WIRE DIAMETER
SPRING
FREE LENGTH
mbar Inch w.c. mm Inch mm Inch
CBS400, CSB400F,
CSB403, CSB403F,
CSB404, CSB404F,
CSB410 and CSB414
17 to 24 6.8 to 9.6 GE30191X012 Pink 2.03 0.080 152 6.00
24 to 35 9.6 to 14 GE43955X012 Orange Stripe 2.19 0.086 110 4.35
35 to 60 14 to 24.1 GE30201X012 DarkGreen 3.23 0.127 110 4.35
54 to 100 21.7 to 40 GE30202X012 Ta n 2.85 0.112 127 5.00
CSB420, CSB420F,
CSB423, CSB423F,
CSB424, CSB424F,
CSB430 and CSB434
100 to 160 1.45 to 2.3 psig GE35081X012 Purple Stripe 3.86 0.152 124 4.90
138 to 300 2.0 to 4.4 psig GE30192X012 DarkBlue 4.27 0.168 118 4.65
276 to 517 4 to 7.5 psig GE33121X012 Red 4.93 0.194 118 4.65
CSB450 and CSB454
500mbarto1bar 7.3 to 14.5 psig GE30203X012 Light Blue 5.59 0.220 102 4.00
1 to 3 bar 14.5 to 43.5 psig GE30204X012 LightGreen 6.73 0.265 100 3.95
Principle of Operations
RefertoFigures4and5.Whendownstreamdemand
decreases,thepressureunderthediaphragm
increases.Thispressureovercomestheregulator
setting(whichissetbyaspring).Throughtheaction
ofthepusherpostassembly,leverandvalvestem,
thebalancedportassemblymovesclosertothe
oriceandreducesgasow.Ifdemanddownstream
increases,pressureunderthediaphragmdecreases.
Springforcepushesthepusherpostassembly
downwardandthebalancedportassemblymoves
awayfromtheorice.
Installation
TheCSB400Seriesregulatorsmaybeinstalledin
anyposition.However,thespringcaseventshould
bepointeddownward.Ifgasescapingthroughthe
CSB400Seriestokeninternalreliefvalvecould
constituteahazard,thespringcaseventmustbepiped
toalocationwhereescapinggaswillnotbehazardous.
Iftheventedgaswillbepipedtoanotherlocation,
obstruction-freetubingorpipingatleastequaltothe
ventandtheendoftheventpipemustbeprotected
fromanythingthatmightclogit.