The ball valve is mainly composed of valve body, ball, valve seat, valve stem and transmission device. . The ball rotates around the center line of the valve body to open and close the valve. The valve can be opened and closed by 90 ° rotation of the valve stem, which is used to close, distribute, adjust the flow and change the flow direction of the medium on the pipeline.
The ball valve has a wide range of pressure and diameter, but its temperature is limited by the seal ring material.
Ball valve is divided into fixed ball valve and floating ball valve in structure; In the form of seal is divided into soft seal ball valve, hard seal ball valve and soft hard double ball valve.
Product Advantages
1.The chemical composition & physical properties meets the requirement of natiaonal standard And send Testing Report to customers when shipment.
2.All valve body & parts are processed by CNC machine tools for ensuring product precision.
3.Every piece workblank must be tested by QC. Those defected workblank returns to bake again.
4.All products use petroleum and anti-rust oil to clean under high pressure before assembling works. Also clean the inside medium after pressure testing and the inner chamber cleanliness is up to the standard of GB/T7748.
5.Every piece valve makes pressure testing as per national standard before shipment. Any defected goods prohibit to ship for client.
The above data is for reference only, please contact us for more details.
Inventory and Quality Control
Why do valves always fail?
In the whole process of design,manufacture, installation,working condition,operation and maintenance,every step should not be lax.
The valve inspection process is as follows:
1:Appearance inspection:
(1)Whether there are sand holes, cracks and other defects on the inner and outer surface of the valve body;
(2)Whether all parts of the valve are damaged, whether the valve body is marked, etc;
2:Performance test
3.Shell strength test
4.Sealing test
5.Action performance test
6.Vacuum sealing test
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Exporting country
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