400X流动的控制阀

The 400X flow control valve is a multifunctional valve that adopts the mode of flow control employed by high-precision pilot valves. It is suitable for use in water distribution pipes within which the flow and pressure need to be controlled, and can serve to keep the preset flow constant, restrict excessive flow at a preset value and reduce the excessively high pressure upstream properly. This valve differs from other conventional throttle valves, which normally work through reducing the flow area by means of orifice plates or purely mechanically, by making use of an appropriate pilot valve to minimize the loss of energy in the course of flow regulation. The 400X flow control valve can completely stop the flow in case of an emergency to avoid loss. Accordingly, it boasts high control sensitivity and is reliable, safe, simple to debug and offers a long service life. The main valve comprises valve body, diaphragm, stem assembly, and seat. The valve is separated by diaphragm into two chambers, up and down. The upper chamber is control chamber, and down chamber is flow through chamber. The valve stem is driven by diaphragm up and down, and driven force comes from the differential pressure taken by two sides of diaphragm. Specifications: 1) Pressure rating: PN10. PN16. PN25/Class150 2) Size range: DN20mm-DN800mm (3/4" ¨C 32") 3) Test and inspection: GB/T 13927, API598