The ball valve is mainly composed of valve body, ball, valve seat, valve stem and transmission device. The closing part of the flange ball valve is a ball. 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.

1.The chemical composition and mechanical properties of the vavle body material meet the national standard requirements.

2.All valve bodies and parts are processed with CNC machine tools and interchanged wildly to ensure product accuracy.

3.Before assembly of the whole product,kerosene and anti-rust oil are used for high-pressure jet cleaning,and the pressure-testing medium is cleaned after pressure test and sprayed with anti-rust oil.

4.Each valve must be pressure tested in accordance with national standards before leaving the factory,and unqualified products will never leave the factory.

5.The valve stem is designed with explosion-proof device.

6.The handle can be locked.

Product parameters

The above data is for reference only, please contact us for more details.

Inventory and Quality Control

1.Parts inspection：make sure every components has good guarantee.

2.Tightness inspection: make sure the sealing of valve.

3.Whole product inspection and test.

(1)before assembly:remove the burr of all parts , clean all parts and the inner cavity of the valve body.

(2)after assembly:Whole product inspection and test

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

Company qualification

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