Henan Quanshun Flow Control Science & Technology Co., Ltd.

Add.: No. 28 Huagong Road, High-tech Zone, Zhengzhou City, Henan Province, China
Tel.: +86-371-55693186
Fax: +86-371-55693182

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Butterfly Check Valve

The butterfly check valve is able to prevent medium from backflow. It is often used to cut off or connect medium in pipelines for industries such as petroleum, chemical, hydraulic power, and power generation.

Features
1. The check valve can prevent medium from backflow.
2. Automatic Operation Mode: When the medium flows forward, the valve disc will be opened under the fluid pressure, when it flows backward, the disc will be closed under the action of fluid pressure and disc’s weight.
3. The rubber valve seat makes for the reliable sealing performance of the check valve.
4. Produced with double springs, load is dispersed equally to the valve disc. So the butterfly check valve can be closed immediately when the medium flows back.

Technical Parameters
Design and Manufacturing Standard ANSI/ASME B16.34, BS1873
Standard of Structure Length ANSI/ASME B16.10
Flange Connection Standard ANSI/ASME B16.5 for NPS≤24"
Weld Standard ANSI/ASME B16.25
Norminal Diameter 2"-16"
Pressure Class 150
Material of Valve Body WCB(A105), WC6, WC9, LCB, CF8(304), CF8M(316), CF3(304L), CF3M(316L), etc.
Material of Sealing Surface Rubber, PTFE, Hard alloy, etc.
Connection Type Flange, weld, wafer

Applications
The butterfly check valve can be used in the pipeline of the petroleum industry, chemical industry, hydraulic power and power plant. The medium can be water, steam, oil and other corrosive medium.

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