A Butterfly valve is a quarter-turn rotary motion valve, that is used to stop, regulate, and start the flow. Butterfly valves are a quick open type. A 90° rotation of the handle can completely close or open the valve. Normally, they are used in systems where a positive shut-off is not required.
2.In Tianjin Milestone Pump & Valve Co. Ltd, you will know about following Butterfly Valve Types
2)Lug Style Type
4)Butt Welded Ends Types
Large Butterfly valves are usually equipped with gearbox type actuator, where the handwheel is connected to the stem via a gearbox. This will reduce the force but at the same time reduce the speed of the operation. This Butterfly Valve Types should be installed in the open position. If the valve is closed during installation, the rubber seat will wedge against the valve disc and make it difficult to open.
3. Applications of Butterfly Valve Types
A Butterfly valve is used in many different fluid services and they perform well in slurry applications also. They can be used in liquids, steam, cryogenics, cooling water, air, gasses, firefighting & Vacuum services.
Butterfly Valve is used in all type of industries application even in High-pressure and temperature services.
4.Advantages of Butterfly Valve Types
1)Butterfly Valve is suitable for large valve applications due to Compact, lightweight design that requires considerably less space, as compared to other valves
2)Due to a quick operation, it needs less time to open or close;
3)The maintenance costs are usually low compared to other valve types
4)A pressure drop across a butterfly valve is small
5)Valve with Non-metallic seating can be used in chemical or corrosive media.
5.Applications of Double eccentric butterfly valves
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