The valve is closed by applying an actuating pressure to an exterior side of the second diaphragm such that the second diaphragm mechanically causes the first diaphragm to close {HEAD ~ the fluid flow path} between {TAIL ~ the inlet} and outlet port 
between
The valve is closed by applying an actuating pressure to an exterior side of the second diaphragm such that the second diaphragm mechanically causes the first diaphragm to close { HEAD ~ the fluid flow path } between { TAIL ~ the inlet } and outlet port
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH