Brochure

Thermoplastic Valves Product Guide & Engineering Specifictions
Butterfly Valve Accessories
Page 795 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
Chainwheel Operator Kits
For Wafer Style Butterfly Valves replace the “CO”
prefix with “COW” in the part number.
• Bolt-on conversion unit for all Spears
®
Butterfly Valves.
Includes all hardware for direct mount to valve.
• Enables operation of Spears
®
Butterfly Valves in high,
normally out of reach locations. Makes valve opening
or closing easy by means of a slight pull on the
sprocket chain.
• Unit consists of Cast Aluminum high efficiency Gear
Operator with Aluminum Alloy Sprocket Rim and
Chain Guide.
• Chain options provide choice of 316 Stainless Steel,
Hot-Dipped Galvanized or Brass. Order separately to
desired length.
Note: In horizontal system installations, Chainwheel Operators should
be generally mounted with operator below valve (inverted valve) to
maintain clearance between chain and system piping. Check for
adequate clearance before installing an operator in a top-mount
position.
Determining
Floor-to-Chainwheel Height
Typical orientation is shown for valve in horizontal
piping system installation. Floor-to-Chainwheel
height is determined by subtracting the specified “C”
dimension from the system centerline height (add
“C” dimension if used with top-mount orientation).
In vertical piping system installations, the Floor-to-
Chainwheel height is the same as that for the centerline
location of the valve in the system.
(VALVE NOT INCLUDED)
A
B
C
D
E
FLOOR-TO-
CHAINWHEEL
OPERATOR
FLOOR LEVEL
3' 0"
CHAIN DROP
F
C
AB
D
E
F
H
G
H
G
Chainwheel Operator Dimensions (Note: w denotes Wafer Style Butterfly Valve Dimensions)
Valve
Size
A A w B B w C C w D D w E E w F F w G G w H H w
2 12-15/16 12-3/16 9-15/16 9-1/8 5-7/8 5-1/8 2-3/8 2-3/8 4-13/16 4-13/16 5-7/16 5-7/16 7-3/4 7-3/4 7-3/8 7-3/8
2-1/2 13-11/16 13-3/16 10-3/16 9-5/8 6-1/8 5-5/8 2-3/8 2-3/8 4-13/16 4-13/16 5-7/16 5-7/16 7-3/4 7-3/4 7-3/8 7-3/8
3 14-7/16 13-3/4 10-11/16 10-1/16 6-5/8 6-1/16 2-3/8 2-3/8 4-13/16 4-13/16 5-7/16 5-7/16 7-3/4 7-3/4 7-3/8 7-3/8
4 15-15/16 14-13/16 11-7/16 10-1/2 7-3/8 6-1/2 2-3/8 2-3/8 4-13/16 4-13/16 5-7/16 5-7/16 7-3/4 7-3/4 7-3/8 7-3/8
6 19-5/16 17-13/16 13-13/16 12-1/4 9-3/4 8-1/4 2-3/8 2-3/8 4-13/16 4-13/16 5-7/16 5-7/16 7-3/4 7-3/4 7-3/8 7-3/8
8 21-9/16 20-7/16 14-13/16 13-9/16 10-3/4 9-9/16 2-3/8 2-3/8 4-13/16 4-13/16 5-7/16 5-7/16 7-3/4 7-3/4 7-3/8 7-3/8
10 24-3/16 – 16-3/16 – 12-1/8 – 2-3/8 – 5-3/8 – 6-7/16 – 7-3/4 – 7-3/8 –
12 26-11/16 – 17-3/16 – 13-1/8 – 2-3/8 – 5-3/8 – 6-7/16 – 7-3/4 – 7-3/8 –
14 31 – 20-1/2 – 14-1/2 – 2-3/4 – 6-7/8 – 7-1/4 – 10-1/2 – 9 –
16 33-1/2 – 21-3/4 – 15-3/4 – 2-3/4 – 6-7/8 – 7-1/4 – 10-1/2 – 9 –
18 35 – 22-1/2 – 16-1/2 – 2-3/4 – 6-7/8 – 7-1/4 – 10-1/2 – 9 –
20 37-1/2 – 23-3/4 – 17-3/4 – 2-3/4 – 6-7/8 – 7-1/4 – 10-1/2 – 9 –
24 42 – 26 – 20 – 2-3/4 – 6-7/8 – 7-1/4 – 10-1/2 – 9 –
Valve Size Part Number
2 CO-020
2-1/2 CO-025
3 CO-030
4 CO-040
6 CO-060
8 CO-080
10 CO-100
12 CO-120
14-24 CO-140
2-1/2" and smaller kits available on special
order basis.
LOCK-LINK CHAIN
OPTIONS
Part
Number
Hot-Dip Galvanized GC-1
Brass BC-1
Stainless Steel SC-1
How to Order Chain
Required chain length is based on chain drop at 3 ft. from floor.
Floor-to-Chainwheel Height 7' 8' 9' 10' 11' 12' 13' 14' 15'
Required Chain Length
10' 12' 14' 16' 18' 20' 22' 24' 26'