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