Tunstall Macon STV Series Manual page 32

Differential Pressure Table
Model MBF / MF, MBG / MG, MP, VF, VG & VW Valves size 2.50" - 6.00"
Flow
GPM 250 300
24.0 10
26.0
12
28.0
14
30.0 16
32.0 18
34.0 20
36.0
22
38.0 25
40.0 28
42.0 31
44.0 34
46.0 37
48.0
40 10
50.0 43 11
55.0 52 13
60.0 62 15
65.0 73 18
70.0
85 21
75.0 97 24
80.0 111 27
85.0 125 31
90.0 140 35
95.0 156
39
100.0 173 43
110.0 52
120.0 62
130.0 72
140.0
84
150.0 96
160.0 109
170.0 124
180.0 138
190.0 154
200.0 171
220.0
240.0
260.0
280.0
Size 2.50" 3.00"
FF 7.600 15.297
Flow Formulas
GPM = FF x (DP)
2
DP = (GPM/FF)
PPL = DP x 0.12
Optional features and accessories available for this
Macon product are an extra charge, and not included
in the standard model price.
www.maconbalancing.com
Differential Pressure: Inches W.C.
Model Size
400 500
8
9
3
4
5
6
7
8
9
10
11
12
14
16 4
20 5
23 6
7
27
31 8
35 9
39 10
44 12
49 13
54 14
66 17
78 21
92 24
107 28
4.00" 5.00"
27.104 52.986
Notes:
1) Accuracy ± 3% of flow rate.
2) Repeatability ± 0.25% of rate.
3) Values in BOLD type represents traditional 10" to 100" sizing range.
4) All valves will function above and below ranges shown. Pressure drop
and readability should be taken into account.
- Model Sizes 2.50" to 6.00"
Flow
600 GPM
300.0
325.0
350.0
375.0
400.0
425.0
450.0
475.0
500.0
525.0
550.0
575.0
600.0
625.0
650.0
675.0
700.0
725.0
750.0
775.0
800.0
825.0
850.0
900.0
925.0
950.0
975.0
1000.0
1100.0
1200.0
1300.0
6 1400.0
7 1500.0
8
10
11
13
16
6.00" Size
70.972 FF
118 Exchange Street · Chicopee, MA 01013
Phone (413) 594-8695 · Fax (413) 598-8109
Section: Components
32
Model Size
400 500
123 32
144
38
167
44
191 50
57
64
72
80
89
98
108
118
128
139
150
162
175
187
200
4.00" 5.00"
27.104 52.986
Tunstall Corporation
Bulletin-MB-VF-250-600-0915
600
18
21
24
28
32
36
40
45
50
55
60
66
71
78
84
90
97
104
112
119
127
135
143
161
170
179
189
199
6.00"
70.972