Butterfly Valve
Low Pressure Drop Valve
The Midco Butterfly Valve is a low pressure drop valve suitable for control of either air or gas flow up to 5 PSI pressure. A unique spring over-run feature is used on all valves. Either manual or motorized valves are available in pipe sizes from 1″ through 4″.
| Model Number |
Valve Size N.P.T. |
Capacity* in C.F.H. (.65 Sp. G.) at 0.3″ W.C. Drop |
A | B | C |
|---|---|---|---|---|---|
| MBF-100 | 1 | 800 | 2 15/16 | 1 3/8 | 1 7/8 |
| MBF-125 | 1 1/4 | 1,300 | 2 15/16 | 1 3/8 | 1 3/4 |
| MBF-150 | 1 1/2 | 1,850 | 2 15/16 | 1 9/16 | 1 3/4 |
| MBF-200 | 2 | 3,100 | 2 15/16 | 1 9/16 | 2 1/2 |
| MBF-250 | 2 1/2 | 5,350 | 3 3/4 | 1 13/16 | 2 1/2 |
| MBF-300 | 3 | 9,100 | 4 | 2 3/16 | 2 1/2 |
| MBF-400 | 4 | 20,000 | 4 5/8 | 2 3/4 | 3 1/4 |
| * For air, multiply capacities by 0.8 For Propane gas, multiply capacitors by 1.62 |
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Specialized Features
Ease of Adjustment Permitted By Spring Over-run Feature. Upper and lower limits set by stop screws regardless of motor stroke-no involved linkage adjustments necessary
Streamlined But Restricted Throat-to allow sensitive control of capacities normally used for given pipe size. 90° Closing Valve To Allow Ease of Synchronization With Shutters Using Suitable Linkage
Handles Air, Natural Gas or Propane up to 5 PSI
Not Affected by Sulfur
Designed for use with Honeywell or Penn-Johnson Modulating Motors
1″ to 4″ Pipe Size, Capacities to 20,000 C.F.H. Natural Gas. All Sizes Component Recognized by Underwriters Laboratory.
Easy to Read Valve Position Indicator, Low Pressure Drop Valve
Temperature Rated -40°F to 250°F
Product Information