Brochure
Thermoplastic Valves Product Guide & Engineering Specifictions
Butterfly Valve Dimensions & Operational Information
Page 791 Suitable for Oil-Free air handling to 25 psi, not for distribution of compressed air or gas Spears
®
Manufacturing Company
Due to Material Cost Variations, Prices Sub
j
ect to Chan
g
e. Check On-line Catalo
g@
www.spearsmf
g
.com
HEX
Bolt Hole
Diameter
Bolt Circle
Diameter
Bolt Hole
Spacing
or
SQR
VALVE
Stem Height ±- .06
1: Gallons per minute at 1 psi pressure drop.
2: Operating torque for large diameter valves varies significantly with system operating pressure, flow direction and velocity.
Contact Spears
®
for torque requirement based on application.
C
v
Values & Operating Torque
Valve Size
C
V
1
Degrees Open
Operating
2
Torque
(in.-lbs.)
15° 30° 45° 60° 75° 90°
1-1/2 2 8 20 36 61 81 100
23 11 27 49 82 109 110
2-1/2 5 19 48 86 144 192 206
39 35 86 155 259 345 360
410 41 103 185 308 411 420
628 113 281 506 844 1125 720
856 225 562 1012 1687 2249 1200
10 111 444 1110 1998 3330 4440 1320
12 158
631 1577 2839 4732 6309 1920
14 176 705 1762 3172 5286 7048
See Notes
16 211 846 2114 3805 6341 8455
18 273 1092 2730 4914 8190 10920
20 355 1418 3545 6381 10635 14180
24 467 1866 4665 8397 13995 18660
Actuator Mounting Dimensions For Custom Actuation
Size
Bolt Hole
Spacing
Bolt Hole
Diameter
Bolt Circle
Diameter
Hex Square
Stem
Height
+.000 -.006 +.000 -.002
Standard Wafer Standard Wafer Standard Wafer Standard Wafer Standard Wafer
1-1/2 1.95 N/A .34 N/A 2.75 N/A .375 N/A .75 N/A
2 1.95 2.47 .34 .40 2.75 3.50 .500 .375 .75 1.30
2-1/2 1.95 2.47 .34 .40 2.75 3.50 .500 .375 .75 1.34
3 2.65 2.47 .41 .40 3.75 3.50 .563 .500 1.00 1.34
4 2.65 2.47 .41 .40 3.75 3.50 .625 .500 1.04 1.37
6 3.17 2.83 .41 .40 4.48 4.00 .875 .750 1.27 1.80
8 3.17 3.17 .41 .40 4.48 4.48 1.000 .875 1.29 1.96
10 3.54 N/A .41 N/A 5.00 N/A 1.125 N/A 1.38 N/A
12 3.54 N/A .41 N/A 5.00 N/A 1.250 N/A 1.38 N/A
14 3.54 N/A .41 N/A 5.00 N/A 1.250 N/A 1.62 N/A
16 3.54 N/A .41 N/A 5.00 N/A 1.250 N/A 1.75 N/A
18 3.54 N/A .41 N/A 5.00 N/A 1.250 N/A 1.75 N/A
20 3.93 N/A .41 N/A 5.56 N/A 1.250 N/A 1.75 N/A
24 4.33 N/A .41 N/A 6.12 N/A 1.250 N/A 1.75 N/A
Note: Standard = Standard, Lug & True Lug Style Valves
Wafer = Wafer Style Valves