4
2600 Emrick Blv
d., B
et
hle
he
m, P
A 18020-8010 www
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nC
on
tr
ols
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om
Te
l: 800-922-0085 or 610-317-0800 F
ax: 610-317-2989
Flo
w Coefficients (Cv)
V
ersus
Tr
av
el
TY
PICA
L FLOW
CU
RVE
UP
P
E
R
LOW
E
R
COM
B
INE
D
2830
0
10
20
30
40
50
60
70
80
90
100
110
100
90
80
70
60
50
40
30
20
10
0
% TRA
V
E
L
% CV
TY
PICA
L FLOW
CU
RVE
2832
0
10
20
30
40
50
60
70
80
90
100
110
120
100
90
80
70
60
50
40
30
20
10
0
% TR
A
V
E
L
% CV
UP
P
E
R
LOW
E
R
COM
B
INE
D
2-Way Valves
(Control of Liquids, Gases, and Steam)
3-Way Valves
(Control of Liquids)
V
alve
2820
Flow Coefficients (Cv)
Two-W
ay Single Seat Unbalanced V
alve
V
alve
2830
Flow Coefficients (Cv)
Three-W
ay Mixing V
alve
2832
Flow Coefficients (Cv)
Three-W
ay Diverting/Mixing V
alve
V
alve
V
alve
Trim
Travel 100%
Size(IN)
Style
Upper
Lower
1
LINEAR
12
15
1-1/2
LINEAR
22
26
2
LINEAR
40
47
V
alve
Trim
Trim Port
Travel
V
alve
Trim
Trim Port
Travel
Size(IN)
Style
Size(IN)
Size
100%
Size(IN)
Style
Size(IN)
Size
100%
1/2
LINEAR
1.126 FULL
6.30
1-1/4
LINEAR
1.676 FULL
18.5
0.876
1SR 4.00
1.126
1SR 10.0
0.626 2SR
2.00
1-1/2
LINEAR
1.676 FULL
20.0
0.626
3SR 1.00
1.126
1SR 10.0
3/4
LINEAR
1.126 FULL
8.20
2
LINEAR
2.126 FULL
40.0
0.876
1SR 4.00
1.676
1SR 20.0
0.626 2SR
2.00
0.626 3SR
1.00
1
LINEAR
1.126 FULL
10.0
0.876 1SR
4.00
0.626 2SR
2.00
0.626 3SR
1.00
2-
W
A
Y
VA
LVE
TY
PICA
L FLOW
CU
RVE
0
10
20
30
40
50
60
70
80
90
100
% TRA
V
E
L
% CV
100
90
80
70
60
50
40
30
20
10
0
V
alve
Trim
Trim
Port
%T
ravel
Size(IN)
Style
Size(IN)
Size
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
1/2 EQ%
0.876
FULL
4.90
4.78
3.53
2.57
1.92
1.92
0.95
0.69
0.43
0.17
0.626
1SR
3.20 3.16 2.29 1.61 1.19 0.75 0.51 0.39 0.26 0.13
0.626
2SR
1.50 1.44 0.96 0.72
0.52 0.42 0.31 0.21 0.10 0.06
LINEAR
0.876
FULL
6.00 5.40 4.80 4.20 3.60 3.00 2.40 1.80 1.20 0.60
3/4
EQ%
0.876
FULL
7.20 7.09 5.53 3.51 2.53 1.73 1.24 0.88 0.52 0.27
0.876
1SR
5.50 5.31 3.73 2.64 1.95 1.21 0.96 0.70 0.43 0.17
0.626
2SR
3.30 3.30 2.34 1.63 1.20 0.75 0.51 0.39 0.26 0.13
0.626
3SR
1.50 1.45 0.96 0.73 0.52 0.42 0.31 0.21 0.10 0.06
LINEAR
0.876
FULL
7.20
6.48 5.76 5.04 4.32 3.60 2.88 2.16 1.44 0.72
1
EQ%
1.126
FULL
10.0 9.70 6.52 4.40 2.82 2.04 1.36 0.81 0.55 0.30
0.876
1SR
8.60 8.38 6.09 3.64 2.58 1.74 1.25 0.89 0.52 0.27
0.876
2SR
6.00 5.79 3.88 2.70 1.97 1.22 0.96 0.70 0.43 0.17
0.626
3SR
3.40 3.41 2.38 1.64 1.20 0.75 0.51 0.39 0.26 0.13
0.626
4SR
1.50 1.46 0.97 0.73 0.53 0.42 0.31 0.21 0.10 0.06
LINEAR
1.126
FULL
10.0 9.00 8.00 7.00 6.00 5.00 4.00 3.00 2.00 1.00
1-1/4
EQ%
1.438
FULL
16.0 15.5 10.4 7.04 4.51 3.26 2.18 1.30 0.88 0.48
1.126
1SR
10.0 9.70 6.52 4.40 2.82 2.04 1.36 0.81 0.55 0.30
0.876
2SR
8.60 8.38 6.09 3.64 2.58 1.74 1.25 0.89 0.52 0.27
0.876
3SR
6.00 5.79 3.88 2.70 1.97 1.22 0.96 0.70 0.43 0.17
0.626
4SR
3.40 3.41 2.38 1.64 1.20 0.75 0.51 0.39 0.26 0.13
LINEAR
1.676
FULL
17.2 15.5 13.8
12.0 10.3 8.60
6.88 5.16
3.44 1.72
1-1/2
EQ%
1.676
FULL
24.0 22.5 19.7 15.1 10.3 7.30 4.90 3.20 1.90 0.90
1.438
1SR
16.0 15.5 10.4 7.04 4.51 3.26 2.18 1.30 0.88 0.48
1.126
2SR
10.0 9.70 6.52 4.40 2.82 2.04 1.36 0.81 0.55 0.30
0.876
3SR
8.60 8.38 6.09 3.64 2.58 1.74 1.25 0.89 0.52 0.27
0.876
4SR
6.00 5.79 3.88 2.70 1.97 1.22 0.96 0.70 0.43 0.17
LINEAR
1.676
FULL
18.0 16.2 14.4 12.6 10.8 9.00 7.20 5.40 3.60 1.80
2
EQ%
2.126
FULL
40.0 37.1 33.1 27.3 19.8 13.2 8.50 5.30 2.80 1.10
1.676
1SR
24.0 22.5 19.7 15.1 10.3 7.30 4.90 3.20 1.90 0.90
1.438
2SR
16.0 15.5 10.4 7.04 4.51 3.26 2.18 1.30 0.88 0.48
1.126
3SR
10.0 9.70 6.52 4.40 2.82 2.04 1.36 0.81 0.55 0.30
0.876
4SR
8.60 8.38 6.09 3.64 2.58 1.74 1.25 0.89 0.52 0.27
LINEAR
2.126
FULL
37.0 33.3 29.6 25.9 22.2 18.5 14.8 11.1 7.40 3.70
5
PS 2800 C 0305
For additional applic
at
ion
s, and/or pr
oduc
ts c
all: 800-922-0085 or vi
sit
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ols
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om
Steam
Temp.
Temp.
Sensible
Latent
Total
Pressure
°F
°C
Heat
Heat
Heat
PSIG
BTU/Lb.
BTU/Lb.
BTU/Lb.
0
212
100
180
971
1151
10
239
115
207
952
1159
25
266
130
236
934
1170
50
297
147
267
912
1179
75
320
160
290
896
1186
100
338
170
309
881
1190
125
353
178
325
868
1193
150
365
185
339
858
1197
200
387
197
362
838
1200
250
406
208
381
821
1202
300
422
217
399
805
1204
400
448
231
438
778
1216
500
470
243
453
752
1205
600
489
254
475
729
1204
Steam T
able
Load Sizing Calculations
Rectangular T
ank Capacity in Gallons
Height x Width x Length (inches)
Gallons =
230
or
Gallons =
H x W x L (Ft.) x 7.5
Circular T
ank Storage Capacity in Gallons
Storage =
6D
2
x L (Gallons)
Where:
D = T
ank Diameter in Feet
L = Length in Feet
Heating W
ater with Steam
Quick Method
GPM
Lbs./Hr
. =
x
Δ
T
2
Accurate Method
GPM x 500 x
Δ
T
Lbs./Hr
. =
h
fg
Heating or Cooling W
ater with W
ater
°F water
2
temp. rise or drop
GPM
1
=
GPM
2
x
°F water
1
temp. rise or drop
Heating or Cooling W
ater
BTU / Hr
.
GPM =
(°F water temp. rise or drop ) x 500
Heating Oil with Steam
GPM
Lbs./Hr
. =
x (°F oil temp. rise)
4
Heating Air with W
ater
CFM x (°F air temp. rise)
GPM = 2.16 x
1000 x (°F water temp. drop)
Heating Liquids with Steam
GPM x 60 x Cp x W
Lbs./Hr
. =
x
Δ
T
h
fg
Heating Liquids in Steam Jacketed Kettles
GPM x Cp x S x 8.33
Lbs./Hr
. =
x
Δ
T
h
fg
x t
General Liquid Heating
W x Cp
Lbs./Hr
. =
x
Δ
T
h
fg
x t
Heating Air with Steam
CFM
Lbs./Hr
. =
x
Δ
T
900
Glossar
y of T
erms
t =
T
ime in Hours
Cp =
Specific Heat of Liquid
S =
Specific Gravity of Fluid
W =
W
eight in Lbs.
Δ
T =
Temperature Rise or Fall in °F
h
fg
=
Latent Heat of Steam
Conversion Factors
1 Lb. Steam / Hr
. =
1000 BTU / Hr
.
1 Cubic Meter =
264 U.S. Gallons
1 Cubic Foot W
ater =
62.4 Lbs.
1 PSI =
2.04 Inches of Mer
cur
y
1 PSI =
2.3 Feet of W
ater
1 PSI =
27.7 Inches of W
ater
1 U.S. Gallon W
ater =
231 Cubic Inches
1 U.S. Gallon W
ater =
8.33 Lbs.
Sizing R
efer
ence
Содержание PVG WW
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