Butterfly Valve 
Butterfly Valve  - Image 2
Butterfly Valve  - Image 3
Butterfly Valve  - Image 4

Butterfly Valve 

A butterfly valve is a mechanism that regulates the flow of materials within large pipe diameters by the quarter-turn rotation of a disc. A rod feeds through the center of a disc and this rod is connected to an actuator that controls the motion of the disc. The disc position is either parallel or perpendicular to the flow of media. A butterfly valve differs from other valves because the disc is always in the flow causing a pressure change for any position of the valve.

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Specifications

 

Standard: EN593/ ISO 5752 /BS5155/AWWA C504

Flange drilling is according to DIN 2501, BS4504, ANSI B16.1

Working pressure: 10bar/16bar/25bar

Testing pressure:

Shell: 15bar/24bar/37.5bar

Seal: 11bar/17.6bar/27.5bar

Material:

Body: DI/CI /Carbon Steel/Stainless Steel

Disc: DI/Stainless steel 304/316, AL-Bronze

Shaft: Stainless steel410/416/420, Seat: EPDM/NBR

Coating: Internal and external with fusion bonded epoxy coating min250μm

 

Different types of butterfly valves

 

Wafer Butterfly Valve: The disc of the Wafer Butterfly Valve is installed in the diameter direction of the pipe. In the butterfly valve body cylindrical channel, disc shaped butterfly plate around the axis of rotation, rotation Angle between 0°-90°, can play the role of flow regulation. when the butterfly plate rotation to 90°, the valve reaches the maximum opening. Wafer butterfly valve is with simple structure, small size, light weight, only by a few parts. And only need to rotate 90° can quickly open and close, simple operation, and the valve has good fluid control characteristics.

Actuated Butterfly Valve:1> The Operator flange conforms to work with manual, pneumatic, or electric actuators.2> The rubber seat is non-collapsible, stretch-resistant, and blowout-proof.3> The precision-machined disc ensures low operating torque and effective sealing up to 200 psi. The hydrodynamically designed disc allows for high-capacity flow.4> One-piece shaft design ensures dependability and positive disc positioning.5> Valves are epoxy coated and incorporate “zerk” style grease fittings for easy lubrication on neck & gearbox (if applicable).

Double Flange Butterfly Valve: The double flange butterfly valve has two flanges on the body of the valve, providing increased stability and security in high-pressure applications.

Double Eccentric Butterfly Valve: The double eccentric end-flanged resilient sealing butterfly valve is operated by the disc rotating from 0° to 90°, allowing for the cutoff or regulation of the media flow. It can be actuated by Vitreous, available upon request. Valve can be actuated by operating every. Handle wheel. electric actuator or pneumatic actuator.

 

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