Butterfly Value
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".
Features & Benefits
- 1" to 4" Pipe Size
- Capacities to 20,000 C.F.H. Natural Gas
- All Sizes Component Recognized By Underwriters Laboratory
- 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
- 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
- Easy to Read Valve Position Indicator
- Low Pressure Drop Valve
- Temperature Rated -40°F to 250°F
Specifications
| 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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