Function and purpose:the main valve is mounted in the section needing to control flow and pressure in the distributing pipeline to keep the preset flow unchanged,limit an exxessive flow at a preset value and resuce the upstream high pressure to downstream low pressure.Even if the upstream pressure of the main valve changes,it will not affect the downstream flow of the main valve.
Pressure class:PN10,PN16,PN25
Diaphragm type:DN20~450
Piston type:DN500~750
Medium temperature:0~80℃
