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o r e d u c e dp r e s s u r e systemF r o mm a i nsystemD r a i nL e a k a g e f l o w k e e p s v a l v e s l i g h t l y o p e n B e l o w v a l v e s e t t i n g A t o r a b o v ev a l v e s e t t i n gF i g u r e 1 0 1 5 D i r e c t a c t i n g p r e s s u r e r e d u c i n g v a l v eCO PYR IG HT (20 0 1 ) EA T ON C OR POR A TIO NCFig ur e 1 0 16 Dir ect ac ting p re ssu re r ed uc ing cir cu itCO PYRIGH T (20 0 1 ) EA T ON CORPO RA TIO NCReduce d PressurePPDR.Pi lot S t ageMain S t ageDash Po tCheck V al vePi lot S t age OrificeFi gure 1017 Pilo t operated pressure reduci ng valv eCO P YRIG HT (20 0 1) E A T ON COR P OR A TIONCFigu re 1 018 P ilot ope rate d pr essure red ucing va lve reg ulating in a clam p cir cuitC OP YRIG HT (20 01) EA T O N C OR PO R A TIO NC8:1 or 16:1 Pil ot Pist onThread ed Mount V er si on SubPlate Mounted V er si onMain S poolDrai n Pass age Pressu re Adjust ment Drai n Pass a