A batch of high-performance top entry ball valves with DN150-DN500 and PN100-PN180 have been successfully produced and passed various tests in the RAYS factory. All the valves have been delivered to its foreign customers at the end of September 2020 and will be put into use for a large natural gas project.
The valve body for this order is forged by integrated forging. Compared to casting, the mechanical property is more stable and reliable under the working condition of the gas medium at minus 60 degrees. All of the workpieces were machined by CNC lathe and machining center, which ensures the shape, position tolerance, and accuracy of the workpiece. Also, the ball and valve seat products adopt: cemented carbide spraying technology, the sealing surface hardness is high, wear-resisting, high-temperature resistance, erosion resistance, and other excellent characteristics.
The finished product test after assembly simulated the gas working condition of the user. After the nitrogen high-pressure gas test, the hard contact sealing surface reached the standard of zero leakage.
The top entry ball valve is used mainly in the pipeline and industrial systems which can utilize inline maintenance. Its main features are simple structure design, low flow drop, compact size, lightweight, reliable sealing, and quick open/close. The operation methods can be manual, gear, pneumatic, electric, gas-over-oil, electro-hydraulic, and others.
