Butterfly Check Valve

Product Introduction

‌Butterfly check valve‌is one that automatically opens and closes the valve disc by relying on the flow of the medium itself. It is mainly used to prevent the medium from flowing backwards. Its working principle is that when the medium flows in a positive direction, the fluid pressure pushes the valve disc to open, allowing the medium to pass through; When the medium flows in the opposite direction, the valve disc is automatically closed and cut off the flow under the action of fluid pressure and self-weight‌.

Product Advantages

1. The butterfly check valve has a simple structure, small size and light weight. The valve clack is disc-shaped and rotates around the rotating shaft of the valve seat channel. Its structure is simple and compact, with small size and light weight, and is easy to install and maintain‌.

2. The valve flap of the butterfly check valve closes quickly and has low water hammer pressure. It can quickly respond to fluid backflow and reduce the impact of water hammer on pipelines and equipment‌.

3. The structural length of the butterfly check valve is shorter than that of ordinary check valves and is suitable for places with limited installation space.

4. Butterfly check valves mainly include butterfly slow-closing check valves, double-disc butterfly check valves, single-disc butterfly check valves, stainless steel butterfly check valves, and carbon steel butterfly check valves.

• Design Standard: BS 1868

• End Flange: ASME B16.5/JIS B2212/DIN 2543/GB9113

• Face to Face: ASME B16.10

• Inspection and testing: API598

保存

• The valve clack of the butterfly check valve is disc-shaped and rotates around the shaft of the valve seat channel. The channel in the valve is designed to be streamlined and has low flow resistance, which is suitable for low flow rate and large diameter occasions with infrequent flow changes. Butterfly check valves are divided into three types: single-disc, double-disc and multi-disc to meet the needs of different flow and pressure‌.

• Butterfly check valves are widely used in pipeline systems in electric power, chemical, pharmaceutical, environmental protection and other industries. They are especially suitable for situations where it is necessary to prevent medium backflow and reduce pipeline pressure impact. For example, butterfly check valves can effectively prevent water hammer phenomena and protect piping systems and equipment from damage in water pump systems‌‌.

• The butterfly check valve relies on the flow of the medium itself to automatically open and close the valve clack. When the medium flows in the specified direction, the valve clack is opened by the action of the medium force; When the medium flows backward, the valve clack closely closes with the valve seat due to its own weight and reverse force, so as to prevent the medium from flowing backward‌‌.

Butterfly check valve

1) Design Standard: GB/T 12238

2) End Flange: ASME B16.5.JIS B2212.DIN 2543,GB9113

3) Size: 2"-12"

4) Pressure: 150lb~300lb

5) Temperature: 350℃

6) Materials: Carbon steel,Stainless steel

7) Suitable Medium: Water,Oil,Gas,Steam

Q1: How many connection methods are there for butterfly check valves?

A1:‌Butterfly check valves are available in flange or wafer types.

Q2: How many forms of butterfly check valves are there?

A2: Butterfly check valves are divided into three types: single-disc type, double-disc type and multi-disc type.