Swing Check Valve

Product Introduction

‌Swing check valve‌, also known as one-way valve or check valve, is an important fluid control equipment. Its main function is to prevent fluid from flowing backwards and ensure one-way flow of fluid in the pipeline. Its working principle is to rely on the flow pressure of the medium to open and close the valve. When the medium pressure drops, the valve disc automatically closes to prevent the fluid from flowing back‌.

Product Advantages

1. Swing check valves usually adopt a swing structure with a built-in rocker arm. All discs are installed inside the valve body and do not penetrate the valve body. Except for the sealing gasket and sealing ring in the middle flange, there is no leakage point as a whole to prevent the possibility of valve leakage. The connection between the valve clack and the rocker arm adopts a spherical connection structure, which makes the valve clack have a certain degree of freedom in the range of 360 degrees and proper trace position compensation‌.‌

2.The flow resistance of swing check valve is small, and the disc swings around the fixed shaft in the valve body. This design makes the resistance of medium flowing less, which is beneficial to improving the flow efficiency of pipeline‌‌‌.

3. The swing check valve has a flexible structure. The valve clack is round or oval and rotates around the axis of the valve stem. This design makes the valve flap more flexible when opening and closing‌.

4、‌Swing check valve mainly includes one-way valve, check valve, stainless steel check valve, and carbon steel swing check valve.

• Design Standard: API 6D / BS 1868 / DIN 3356

• End Flange: ASME B16.5 / JIS B2220 / DIN 2543

• Face to Face: ASME B16.10 / JISB2002 / BS EN558-1

• Inspection and testing: API598

• The swing check valve can open quickly when the medium flows forward, and can also close quickly when the medium flows backward. The response speed is fast, ensuring the safety of the equipment‌.

• Swing check valves are widely used in various pipeline systems, such as water supply systems, drainage systems, petrochemical, electric power, metallurgy and other industries. In the water supply system, the swing check valve can prevent the water from flowing backwards and ensure the safety of the water supply; In the drainage system, it can prevent sewage from flowing back and ensure smooth drainage; In the petrochemical industry, it can prevent the backflow of oil and gas and ensure production safety; It can prevent the backflow of cooling water and ensure the safety of power generation in the power industry; It can prevent the backflow of high-temperature molten metal and ensure production safety‌in the metallurgical industry.

• Swing check valves can be installed on horizontal, vertical or inclined pipelines, especially suitable for larger diameter pipelines. When used on vertical lines, the medium flow direction should be from bottom to top‌.

Swing check valve

1) Design Standard: API 6D,BS 1868,DIN 3356,GB/T12236

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

3) Size: 1/2"-20"

4) Pressure: 150lb~900lb

5) Temperature: -19℃~425℃

6) Materials: Carbon steel/Stainless steel

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

Q1: Are there any installation requirements for swing check valves?

A1: Swing check valve can be installed horizontally or vertically‌.

Q2: Does the swing check valve have great resistance?

A2: The disc of the swing check valve swings around a fixed axis in the valve body. This design makes the medium encounter less resistance when flowing.

Q3: What are the manufacturing standards for swing check valves?

A3: Swing check valve conforms to API 601, API 6D, BS 1868 and other design standards.