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A STEM
- STEEL
ASTM A-311 AISI GRADE C1144: One piece
full length stem with integral "DD" disc position indicator.
B STEM RETAINER - ALLOY
625 ASTM B 446.
Insures positive retention of stem.
C BODY - CAST CARBON STEEL ASTM A-216
GRADE WCB WAFER OR LUG: Stronger than
cast or ductile iron. Not subject to thermal shock. Also
available in stainless steel and aluminum.
D DISC INSERT - ATSM A-108 AND A-487 GRADE
N: Lining material bonded to steel. .
E EXTERIOR FINISH
High Gloss Epoxy. Maximum protection
from environmental corrosion.
F GASKET SURFACE: Bonded to valve
body. Will not "fold" on insertion between flanges.
G BUSHING - RYTON/TFE: Reinforced
top stabilizer bushing prevents side loading.
H SECONDARY STEM SEAL: Pressure
activated Viton seal ring.
I & M PRIMARY
STEM SEAL: Integrally
molded O-Ring seal.
J & L BEARING - TFE: Isolates
elastomer sealing surfaces for long life and high cycle capability.
K BODY LINER: Molded and bonded
to body; prevents seat blowout.
N BUSHING/RETAINER
CUP - RYTON/TFE: Reinforced
bottom stabilizer bushing prevents side loading and leak
path to casting. Provides protection to stem from premature
wear caused by metal-to-metal contact.
O DISC TO STEM CONNECTION: Flat drive
mechanism.
The quarter turn operation of the disc
is easily accomplished by the handlever (with friction
lock positioner) or weatherproof gear operator. For pneumatic
or electric actuation packages, see Automated
Valves. The Mosites Butterfly Valve meets ANSI B16.104,
Class VI, bi directional shut-off specifications. The valve
can be used for full vacuum and dead end service.
C30 COEFFICIENT OF FLOW
Cv of valve opening
Valve Size |
20º |
30º |
40º |
50º |
60º |
70º |
80º |
90º |
2" |
1 |
8 |
18 |
30 |
43 |
73 |
117 |
159 |
3" |
3 |
16 |
38 |
75 |
132 |
195 |
296 |
429 |
4" |
9 |
43 |
82 |
150 |
241 |
377 |
615 |
884 |
6" |
21 |
95 |
186 |
338 |
541 |
872 |
1340 |
1800 |
8" |
38 |
165 |
330 |
601 |
963 |
1550 |
2460 |
3400 |
10" |
59 |
258 |
515 |
938 |
1500 |
2420 |
3850 |
5830 |
12" |
86 |
371 |
741 |
1350 |
2170 |
3490 |
5540 |
7960 |
C30 TORQUES & WEIGHTS
All weights shown in pounds
Valve Size |
ACTUAL TORQUE
INCH POUNDS* |
VALVE WEIGHT
LESS OPERATOR LUG BODY |
VALVE WEIGHT
LESS OPERATOR WAFER BODY |
GEAR OPERATOR
WEIGHT |
HANDLEVER OPERATOR
WEIGHT |
2" |
100 |
7.5 |
6 |
13 |
4 |
3" |
220 |
16 |
13 |
15 |
7 |
4" |
390 |
20 |
16 |
23 |
7 |
6" |
726 |
30 |
25 |
29 |
7 |
8" |
1162 |
65 |
59 |
29 |
9 |
10" |
2473 |
91 |
84 |
43 |
10 |
12" |
4550 |
132 |
122 |
43 |
10 |
* Torque specifications are based on optimum
test conditions. Actual torques may vary under different
field
and environmental applications. For actuator sizing multiply torques by 1.5.
C30 DIMENSION TABLE
Valve
Size |
A |
B |
C |
D |
E |
F |
G |
H |
J |
K |
L |
M(LUG) |
N |
P |
R |
S |
2" |
2.09 |
3.50 |
1.75 |
3.25 |
2.469 |
0.500 |
4.75 |
2.203 |
1.50 |
1.51 |
10-32
ON 1.125 BC |
5/8-11
4 HOLES |
3/8-16 2 HOLES |
- |
6.00 |
0.375 |
3" |
3.00 |
4.63 |
2.25 |
3.88 |
3.000 |
0.625 |
6.00 |
3.250 |
2.00 |
2.45 |
1/4-20
ON 1.375 BC |
5/8-11
4 HOLES |
1/2-13 2 HOLES |
- |
7.63 |
0.500 |
4" |
4.03 |
5.91 |
2.25 |
4.75 |
2.125 |
0.625 |
4.25 |
3.000 |
2.00 |
3.72 |
1/4-20
ON 1.375 BC |
5/8-11
8 HOLES |
1/2-13 2 HOLES |
- |
9.00 |
0.500 |
6" |
6.10 |
7.88 |
2.50 |
5.75 |
2.125 |
0.750 |
5.38 |
3.000 |
2.25 |
5.66 |
1/4-20
ON 1.984 BC |
3/4-10
8 HOLES |
1/2-13 2 HOLES |
- |
11.00 |
0.625 |
8" |
7.95 |
10.00 |
3.75 |
7.13 |
2.125 |
1.000 |
7.00 |
3.500 |
3.50 |
7.36 |
1/4-20
ON 2.203 BC |
3/4-10
8 HOLES |
1/2-13 2 HOLES |
- |
13.63 |
0.875 |
10" |
9.88 |
12.00 |
3.75 |
8.50 |
4.125 |
1.250 |
7.00 |
5.016 |
3.50 |
9.64 |
- |
7/8-9
12 HOLES |
1/2-13 4 HOLES |
2.313 |
17.00 |
1.000 |
12" |
11.88 |
14.00 |
4.00 |
10.00 |
4.125 |
1.500 |
8.00 |
5.016 |
3.75 |
11.53 |
- |
7/8-9
12 HOLES |
1/2-13 4 HOLES |
2.313 |
20.00 |
1.250 |
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