ZZYP/M/N Self operated control valve was able to close or open by the medium forces without costing any additional energy.this valve could run at working place without electricity or air supply,which save energy.Pressue setting values could be ajusted while this valve working.It is Samrt actions and Hihg sealings performance.This valves is Widely used in Petroleum,Chemical industry,electricity industry,food,mechanical manufacturing to perform the pressure release,steady pressure or other automatic control.
