ANSI Standard Ductile Iron Lug Type Centerline Wafer Butterfly Valve
Product introduction:
Butterfly valves are quarter-turn valves that are often used for on-off or modulating functions. Its main function is to control the fluid flow in a pipeline. The flow rate can be precisely controlled by rotating the disc-shaped element at any angle between 0 and 90 degrees. For on/off applications or to modulate flow, they are commonly utilized. They provide unhindered flow when completely opened with a negligible pressure drop. When shut, they provide a tight seal that stops any flow. They are available with huge orifice diameters and operate quickly. The disk attached to a rod. The disk spins to allow fluid to pass through when the valve opens. When the rod spins the disc by a quarter turn to a point perpendicular to the flow direction, it closes. It is a rotational motion valves with a quarter-turn, to stop the flow of fluid. They have the ability to control the flow. They have a wide range of applications, particularly in flow isolation, and are utilized in a wide range of process media and industries, including water supply, collection, and distribution, as well as pumping stations.
Lug type butterfly valve is American standard butterfly valve, same function as wafer butterfly valve product, which is connected between two pipe flanges with a double bolt valve, its simple structure, small size, light weight, only by a few parts. And only need to rotate 90° can quickly open and close, simple operation, while the valve has good fluid control characteristics. When butterfly valve is in full open position, butterfly plate thickness is the only resistance when medium flows through the valve body, so the pressure drop produced by the valve is very small, so it has good flow control characteristics. Butterfly valve has two sealing types: spring seal and metal seal. Elastic seal valve, sealing ring can be mounted on the valve body or attached to the disc periphery.
Product technical paramters:
| Nominal Diameter DN (mm) | 50~600 |
| Nominal Pressure PN (MPa) | 1.6/150lb |
| Test Pressure (MPa) | Strength (water) | 2.4 |
| Enclose (Water) | 1.76 |
| Main Components | Valve body | Ductile iron |
| Disc | Ductile iron, stainless steel |
| Seat | EPDM, PTFE |
| Axle | 20Cr13 |
| Working temperature | ≤120℃ |
| Medium suitable | Water and oil |
| Connection | Wafer type |
| Driven method | Level, worm gear, pneumatic and electric actuators |
Product features:
1. Design according with API 609/EN 593.
2. Tightness in both ways, lug type with threaded ears.
3. Flexible sleeve adapted to the shape of the body assures low operating torque. High and low semi stem giving a high flow coefficient, machined disc on periphery giving a low and regular torque.
4. Mounting flange according to ISO 5211, for worm gear, pneumatic actuator and electric actuators installation for easy operation.
5. Small operating torque, labor-saving dexterity.
6. Quick open and close speed and good sealing effect.
6. Can be installed in any position,space saving design, low cost and easy maintenance.
7. Wide application in industries such as chemical, oil and gas, petrochemical, energy, textile and water fields for water treatment, chemical processing, oil and gas, power generation etc.
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Centerline Wafer Butterfly Valve Images
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