Features:
Leflow is manufacturing Cast Steel Swing check valve according to BS1868(API 594B) and API 6D, These two standards have little difference, BS1868 has SPINDLE body,which is Bilateral Symmetry;While the body of 6D is different sides. All sizes of 6D must be FULL bore, so does BS1868 valve when size is bigger than 4”, the smaller size is not full open. The cover is bolted when pressure is less than 900lbs,and above, Pressure seal type is recommended. The seat can be Integral and replaceable type. When pressure and size is big, counter weight is necessary, sometimes, Hydraulic damper is selected, to protect valve seat and pipeline.
The cast steel swing check valve is an automatic valve, when the fluid comes as defined, the disc leave the seat and valve is open, the more the pressure, the bigger open(≤90D) the disc, when the big pressure comes bigger than coming ones, the disc will come back to seat, and close the valve, the bigger the pressure difference, the better sealing performance it will be. This kind of valve is used to control the flow of different media such as water, oil, steam, and gas, and achieve switching and regulating control under different process conditions.
It has following benefits:
1.The disc is hinged inside the body,No stem leak points;
2.Good sealing performance: It has excellent sealing performance, effectively preventing media leakage and improving the safety and stability of the pipeline system.
3.Flexible operation: It adopts a rotary method for opening and closing, making the operation flexible, convenient, and highly reliability
4.Can be installed in either vertical or horizontal applications.
5.Head loss is lower compared to other type of check valves.
