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.
| 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.
