Media Valve Co., Inc.
Media Valve Co. Inc.

The Manufacturer of Mosites Butterfly Valves

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Engineering Data For A20 Butterfly Valve

A20 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

 

A20 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″ 35 9 7 12 4
3″ 210 17 14 12 7
4″ 228 21 17 23 7
6″ 657 33 27 23 9
8″ 830 74 65 27 9
10″ 2365 101 95 40 10
12″ 3797 142 135 40 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 1.25.

A20 Dimensions

A20 DIMENSION TABLE

Valve Size A B C D E F G H J K L M(LUG) N P R
(Wafer)
R
(Lug)
S
2″ 2.09 3.50 1.63 3.25 1.60 0.500 4.75 2.203 1.50 1.65 10-32 ON 1.125 BC 5/8-11 4 PLCS ON 4.75 BC 3/8-16 2 PLCS 6.00 6.37 0.375
3″ 2.99 4.63 2.25 3.88 * 0.625 6.00 3.250 2.00 2.45 1/4-20 ON 1.375 BC 5/8-11 4 PLCS ON 6.00 BC 1/2-13 2 PLCS 7.31 7.62 0.500
4″ 4.04 5.91 2.25 4.75 2.13 0.625 4.25 3.000 2.00 3.72 1/4-20 ON 1.375 BC 5/8-11 8 PLCS ON 7.50 BC 1/2-13 2 PLCS 8.38 9.00 0.500
6″ 5.88 7.88 2.50 5.75 2.13 0.750 5.38 3.000 2.25 5.66 1/4-20 ON 1.984 BC 3/4-10 8 PLCS ON 9.50 BC 1/2-13 2 PLCS 10.56 11.00 0.625
8″ 7.87 10.00 3.75 7.13 2.13 1.000 7.00 3.500 3.50 7.36 1/4-20 ON 2.203 BC 3/4-10 8 PLCS ON 11.25 BC 1/2-13 2 PLCS 13.63 13.63 0.875
10″ 9.89 12.00 3.75 8.50 2.63 1.250 7.00 5.016 3.50 9.64 7/8-9 12 PLCS ON 14.25 BC 1/2-13 4 PLCS 2.313 17.00 17.00 1.000
12″ 12.11 14.00 4.00 10.00 2.63 1.500 8.00 5.016 3.75 11.53 7/8-9 12 PLCS ON 17.00 BC 1/2-13 4 PLCS 2.313 20.00 20.00 1.250

* Contact manufacturer for mounting dimensions.

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