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Butterfly Valve

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China Butterfly Valve Suppliers
A Butterfly Valve is a valve which can be used for isolating or regulating flow. The closing mechanism takes the form of a disc.
Operation is similar to that of a Ball Valve, which allows for quick shut off. Butterfly Valves are generally favored because they are lower in cost to other valve designs as well as being lighter in weight, meaning less support is required. The disc is positioned in the center of the pipe; passing through the disc is a rod connected to an Actuator on the outside of the valve. Rotating the actuator turns the disc either parallel or perpendicular to the flow. Unlike a ball valve, the disc is always present within the flow, so a pressure drop is always induced in the flow, regardless of valve position.
A butterfly valve is from a family of valves called quarter-turn valves. In operation, the valve is fully open or closed when the disc is rotated a quarter turn. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. When the valve is fully open, the disc is rotated a quarter turn so that it allows an almost unrestricted passage of the fluid. The valve may also be opened incrementally to throttle flow.

Material:
The body material: GG25/GGG40/GGG50/SS316/SS304
The disc material :DI/SS316/SS304/AL-BZ
The stem material:SS410/SS416/SS420/SS304/SS316
The seat material:NBR/EPDM/PTFE/VITON

Design Standard:API 609/ISO 5752/BS5155
Flange Standard:
ANSI 125#/150#; JIS5K/10K/16K; DIN 2501 PN6/PN10/PN16/; BS4504 PN10/PN16

Features:
1. Small in size and light in weight, easy installation and maintenance. It can be mounted wherever needed.
2. Simple and compact construction,
3. Minimized operating torque, energy saving.
4. Flow block is small. Excellent regulation performance.
5. Wide selection of materials, applicable for various medium.
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