The valve can reduce the compressible fluid noise as well. In order to adapt to the gas throttling diffusion and expansion, sleeve is provided with many symmetrical holes to reduce the pressure drop. The valve core adopts the structure of pressure balance. The fluid channel is a streamlined “S” channel. And it has a contra-vane to improve balanced fluid flow around the sleeve with low pressure drop loss, large flow, low noise, cavitation corrosion resistance and anti-cavitation. Leakage level: for metal seat, less than 0.1% of the rated valve capacity, conforming to level IV of ANSI B16.104-1976.