The value of 10 bar is to be taken as an example, in special cases {HEAD ~ the prestress} of the second non return valve is to be calculated with respect to {TAIL ~ the throttling action} of the orifice 
The value of 10 bar is to be taken as an example , in special cases { HEAD ~ the prestress } of the second non return valve is to be calculated with respect to { TAIL ~ the throttling action } of the orifice
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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH