Swing Check Valve

The swing check valve is used to prevent the backflow of media. By selecting different materials (WCB, CF8(M), CF3(M), 1Gr5Mo, 15CrMo1V), it can be applied to various media such as water, steam, oil, nitric acid, acetic acid, strong oxidizing media and urea. It is mainly used in pipelines of petroleum, chemical, pharmaceutical, fertilizer, electricity, etc.

Structural features

The swing check valve adopts an internal rocker arm swing structure. All the opening and closing parts of the valve are installed inside the valve body and do not penetrate the valve body. Except for the sealing gasket and sealing ring used in the middle flange, there is no external leakage point as a whole, eliminating the possibility of valve leakage. The swing check valve rocker arm and valve disc connection adopts a spherical connection structure, which allows the valve disc to have a certain degree of freedom within a 360-degree range and has appropriate micro-position compensation.

It is suitable for clean media, not suitable for media containing solid particles and high viscosity. Design standard: API 6D     API 594     BS1868

Product range:

1. Pressure range: CLASS   150Lb~2500Lb

2. Nominal diameter:  NPS        2~60″

3. Main body material: Carbon steel   Stainless steel   Duplex stainless steel   Alloy steel  Nickel alloy steel

4. Connection form: RF   RTJ   BW

Product features: 

1. Small fluid resistance; 

2. Fast closing and sensitive action; 

3. Small closing impact, not easy to produce water hammer; 

4. Optional heavy hammer or gear opening structure; 

5.Optional soft seal design; 

6. Optional to lock the disc position in the fully open position; 

7. Optional jacket insulation design;