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Swing Valve
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Swing Valve

Swing Valve

The swing return valve is also called a check valve, and its function is to prevent the medium in the pipeline from flowing back. The opening and closing parts open or close by themselves depending on the flow and force of the medium to prevent the backflow of the medium. The valve is called a check valve.
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Swing check valve is suitable for various pipelines with nominal pressure PN1.0MPa~42.0MPa, Class150-2500; nominal diameter DN15~1200mm, NPS1/2~48; operating temperature -196~540℃, used to prevent Medium flow back. By selecting different materials, it can be used in various media such as water, steam, oil, nitric acid, acetic acid, strong oxidizing media and urea.

Specifications

Nominal Diameter

DN40

DN50

DN65

DN80

DN100

DN125

DN150

DN200

DN250

DN300

DN350
Casting Type

Cast Iron

Ductile Iron
PN Value 16
Working Temperature -10 ... +120 °C
Applications

Hot and cold water systems

Liquid Fluids
  • Structural features of swing check valve

1. The structural length is short, and its structural length is only 1/4~1/8 of the traditional flange check valve;
2. Small size and light weight, its weight is only 1/4~1/20 of the traditional micro-resistance slow-closing check valve;
3. The valve disc closes quickly and the water hammer pressure is small;
4. Both horizontal and vertical pipes can be used and are easy to install;
5. The flow channel is smooth and the fluid resistance is small;
6. Sensitive action and good sealing performance;
7. The valve disc stroke is short and the valve closing impact is small;
8. Overall structure, simple and compact, beautiful appearance;
9. Long service life and high reliability.

  • Swing check valve installation and use

1. Slow-closing check valve is installed vertically on the horizontal pipeline, the use is generally in the fully open state;
2. The following work should be carried out before installation:
A. Remove the muffler cover and foam plate at both ends of the valve channel, clean the inner cavity and remove grease and scale;
B. Strip the valve valve surface on the oil paper, remove the valve on the surface of the oil scale;
3. The flow direction of the medium must be restricted during installation;
4. The medium through the pipeline should not have hard particles, so as not to damage the sealing surface;
5. The valve factory to one by one inspection and test qualified, the installation unit can be directly pressure test or installation and use.

Swing Check Valve

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