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