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