Brochure
Thermoplastic Valves Product Guide & Engineering Specifictions
Butterfly Valves Overview
Made in the U.S.A. Suitable for Oil-Free air handling to 25 psi, not for distribution of compressed air or gas Page 780
Due to Material Cost Variations, Prices Sub
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ect to Chan
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e. Check On-line Catalo
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www.spearsmf
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.com
Basic Valve Options
ButterÀ y Valves can be purchased
with any combination of the
following options:
• Lever Handle Valve (through 8" only)
• Gear Operated Valve
• Valve Only (no handle/operator)
• True Lug Valves
— Stainless Steel
— Zinc Plated Steel
• Buna-N Seats
• EPDM Seats
• FKM Seats
• PTFE Sleeved Seats
Valve Repair & Accessory Kits
• Lever Handle Kits
• Gear Operator Kits
• Chainwheel Operator Kits
• Lug Insert Sets (for standard valve)
— Stainless Steel
— Zinc Plated Steel
• 2" Square / T-Style Gear Operator Nuts
• Seat & Seal Carrier Replacement Kits
• Valve Overhaul Kits
• Stem Extension Kits
General Conformance Speci¿ cations
Material — ASTM D 1784 (PVC Cell Classi¿ cation 12454, CPVC Cell Classi¿ cation 23447); Certi¿ e
d
by NSF International for potable water service.
Bolt Hole Pattern — ANSI/ASME B-16.5; ASTM D 4024
Laying Length (Standard valve ONLY) — AWWA C504 (wafer valve); MSS SP-67
Pressure Class — 150B, AWWA C504
Hydrostatic Pressure Test — AWWA C504, ASTM D 1599
SUITABILITY OF VALVE AND VALVE COMPONENTS FOR APPLICATION AND OPERATING ENVIRONMENT IS AT USER’S DISCRETION AND RE-
SPONSIBILITY.
C
v
V
a
l
ues
&O
perat
i
ng
T
orque
Valve
Size
Cv Degrees Open
Operating
Torque
(in.-lbs.)
15° 30° 45° 60° 75° 90°
1-1/2 2 8 20 36 61 81 100
2 3 11 27 49 82 109 110
2-1/2 5 19 48 86 144 192 206
3 9 35 86 155 259 345 360
4 10 41 103 185 308 411 420
6 28 113 281 506 844 1125 720
8 56 225 562 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
Note
NOTE: Operating torque for large diameter valves varies significantly with system operating pressure, flow
direction and velocity. Contact Spears
®
for torque requirement based on application.
SPEARS
®
ButterÀ y Valves are designed for installation with user supplie
d
full-face, 1/8" thick Neoprene (or desired elastomer) gaskets, hex bolts,
nuts, and washers. True Lug Valves may be installed for À ow in eithe
r
direction. Standard Valves may be installed for À ow in either direction in a
dual À ange (À ange each side) installation, but require attention to directio
n
of À ow when installed in a single-side (À ange one-side only) application
for dead-end service. Consult installation instructions for details of single-
side installation and special instructions for use of lug-insert option.