Brochure

Actual Flow =
qCBI
C
v
= 1.52
q
q in GPM, p in Ft. of H2O
C
v
=
q
q in GPM, p in PSI
√
γ
Δ
√
p
√
p
√
Δ
Δ
ediuGnoitceleSevlaV
eziSevlaV
wolFfoegnaRlanimoN
lanimoN
snoisnemiD
sehcnI mm MPG )h/l(
2/12 56ND )k52-k01(
3 08ND )k13-k52(
4 001ND
)k05-k13(
5 521ND )k67-k05(
6 051ND )k801-k67(
8 002ND )k091-k801(
01 052ND )k043-k091(
21 003ND )k773-k043(
39 - 87
87 - 125
125 - 213
213 - 300
300 - 450
450 - 760
760 - 920
920 - 1500
Model STVG
Submittal Data
2 1/2" 3" 4" 5" 6" 8" 10" 12"
DN 65 DN 80 DN 100 DN 125 DN 150 DN 200 DN 250 DN 300
1.00 8 17 24 81 52 126 250 298
1.25 10 20 27 97 56 162 303 346
1.50 12 22 29 113 59 198 354 452
1.75 15 25
32 129 62 233 399 448
2.00 19 27 35 143 66 274 444 499
2.25 24 30 38 158 70 316 480 553
2.50 30 33 31 171 74 360 513 618
2.75 36 36
48 184 78 401 543 682
3.00 42 40 55 197 81 437 574 750
3.25 47 45 64 209 84 466 605 819
3.50 53 51 73 223 87 488 635 887
3.75 57 58 84
235 92 508 668 946
4.00 62 64 95 247 99 528 697 995
4.25 66 71 106 259 111 547 722 1,025
4.50 70 77 116 271 124 569 745 1,045
4.75 74 84 127 282
138 589 764 1,064
5.00 77 90 137 294 150 610 780 1,091
5.25 80 97 147 305 158 631 792 1,131
5.50 82 104 157 317 164 650 802 1,183
5.75 84 110 167 327 169
667 810 1,231
6.00 85 115 177 338 175 682 817 1,273
6.25 87 121 188 347 183 692 825 1,303
6.50 88 125 197 355 194 700 833 1,320
6.75 89 128 206 362 211 707 839
1,332
7.00 89 131 213 368 233 716 846 1,343
7.25 90 133 219 374 261 727 852 1,356
7.50 91 134 223 379 292 740 858 1,371
7.75 92 135 226 384 323 754 864 1,384
8.00 93
136 229 390 349 767 872 1,395
8.25 396 369 780 881 1,400
8.50 403 382 791 892 1,404
8.75 410 394 799 901 1,412
9.00 415 408 802 908 1,430
9.25 418 424 801 912 1,457
9.50 419
444 798 915 1,491
9.75 419 466 795 917 1,526
10.0
0
419 489 796 922 1,554
10.25 803 929 1,567
10.5
0
813 939 1,570
10.75 824 949 1,568
11.0
0
834 960 1,565
11.25 840 969 1,565
11.5
0
842 976 1,567
11.75 843 983 1,571
12.0
0
843 989 1,575
12.25 1,578
12.5
0
1,581
12.75 1,584
13.0
0
1,588
13.25 1,592
13.5
0
1,598
13.75 1,605
14.0
0
1,611
Flow coefficient values (Cv’s) at various handwheel sengs
Handwheel
Seng
Valve is fully open
Sizing a Balancing Valve
When the differential pressure and
design flow are known, use this
formula to calculate Cv value.
Grease the pipe ends, valve ends and rubber gasket
lips with grease, graphite paste or similar grease.
Slip the rubber gasket over the pipe end of each joint.
Slide the gasket past the grooves. Position the grooved
end valve between the pipe ends and slide the gaskets
back into the central spanned position.
All products have a flow direction arrow. Make sure that
it is pointing in the direction of the flow. Apply grease
on the outside of the gasket. Install housing clamps
over the gasket – insert bolts and nuts.
GROOVED END VALVE CONNECTIONS
Tighten nuts evenly, using socket or other wrench.
Tighten so that housing clamps come together evenly.
The connection is complete when housing clamps
meet metal to metal, further tightening of bolts is
not necessary.
Pre-assemble large diameter multi-segment housing
clamps loosely and install them as half-housings.
Take up evenly from top to bottom on alternate bolts.
Correction For Liquids
Applies to liquids other than water.
Correct the measured flow (q) by
the density ( ) according to this
formula
γ
INSTALLATION RECOMMENDATIONS
Form # STVG-03.14
Optional features and accessories available
for this Macon product are an extra charge,
and not included in the standard model price.
Tunstall Corporation
118 Exchange Street
Chicopee, MA 01013