Factory production Y43X-A proportional valve, beautiful shape, reliable quality, the proportion of accurate, smooth, not only by the dynamic pressure is also reduced static pressure. 
 The internal piston valve by valve area produced by different carrier at both ends of the pressure difference and change the pressure after the valve to achieve the purpose of decompression. 
 I plant the decompression valve ratio: 2:1,3:1,4:1,3:2,5:2, could also be designed according to user's specific proportion of the valve.