I-valve isetshenziselwa ukulawula ukunyakaza nokukhiya kwe-actuator kuzo zombili izinkomba ngokuqaphela ukwehla okulawulwayo komthwalo ongaphunyuki uhudulwa yisisindo sawo, njengoba i-valve ingavumeli noma iyiphi i-cavitation ye-actuator. Ayizweli ukucindezela emuva ngakho-ke isetshenziswa lapho ama-overcenters avamile engasebenzi kahle ekulawuleni ukulayisha, okuvumela ingcindezi ebekwe isistimu ukuthi isetshenziselwe ukusebenzisa ama-actuator amaningana ochungechungeni. Ukuxhumeka kwe-Flange kuvumela i-valve ukuthi ifakwe ngqo ku-actuator.

Amavalvu e-BOST ochungechunge ama-valve angaphezulu nendawo aphindwe kabili: enza umsebenzi wokusekela nokulawula ukwehla komthwalo ngezindlela ezimbili. Ama-valve aphikisayo aphindwe kabili asetshenziswa ezinhlelweni ezinemithwalo eqondiswe kabili lapho kudingeka khona ukuqinisekisa ukuzinza endaweni yokusebenza nokulawula ukunyakaza kwawo amavalvu angama-flangable, okungukuthi angasetshenziswa ngokuqondile ku-actuator (ngokuvamile i-hydraulic cylinder). Ngokufaka i-flanging imigqa yangemuva evela ku-cylinder ixhunywe kulayini olawulwayo, ondliwe esigabeni sokulethwa ngokugeleza kwamahhala ngokusebenzisa ama-valve amabili okuhlola. Ama-counterbalance valves ama-valve asebenza ngomshayeli. Ukunika amandla umugqa ohlangothini oluphambene nomthwalo, umugqa womshayeli uyasebenza futhi ulawula ukuvulwa okuyingxenye komugqa wokwehla ukuze uvumele ukulawulwa kokunyakaza ngisho nalapho kukhona imithwalo yamandla adonsela phansi futhi ugweme i-cavitation phenomenon. Ngenxa yesilinganiso sokunciphisa phakathi komugqa wokulayisha kanye nomugqa wokushayela we-hydraulic (isilinganiso somshayeli), ingcindezi edingekayo ukuze uvule ama-valve iphansi kunokucindezela kokubeka. I-valve  i-double counterbalance valve ingakwazi futhi ukwenza umsebenzi wokuvikela isistimu ye-hydraulic kanye nesakhiwo somshini esixhunywe kuso, isebenze njengevalvu evikela ukushaqeka lapho ukuphakama kwengcindezi kwenzeka ngenxa yemithwalo eminingi noma imithelela yengozi. Lo msebenzi ungenzeka kuphela uma ulayini wokubuyisela kumsabalalisi uxhunywe ku-drain. I-valve ephikisana nesilinganiso esinxeshezelwe kancane: ukulungiselelwa kwevalvu akuthintwa yinoma iyiphi ingcindezi eyinsalela emigqeni yokubuyisela, izingcindezi eziphikisayo esikhundleni salokho ezikhuphula umfutho womshayeli odingekayo ukuze uvule i-valve. Ngakho-ke lolu hlobo lwe-valve lufanele ukufakwa kumasistimu afaka abasabalalisi abanezilayidi ezimaphakathi nendawo evaliwe, nokusetshenziswa okuvalwe ngokungathathi hlangothi.

Isici esiyinhloko sokusekela umthwalo yi-hydraulic seal. Ukuze kuqinisekiswe ukusebenza okuhle kakhulu mayelana nokubekwa uphawu, i-BOST inaka ngokukhethekile ukufezekiswa kwezingxenye, kusukela ekwakhiweni kwazo ngensimbi enamandla amakhulu, eqinile negayiwe, kuya ekuqinisekisweni kobukhulu nejiyomethrikhi, kanye nasekuhlolweni kokuhlanganisiwe. i-valve. Amavalvu  aphikisayo ayizingxenye kumavalvu omzimba: zonke izakhi zifakwe ngaphakathi kwe-hydraulic manifold, isixazululo esivumela ukulawula amazinga okugeleza aphezulu kuyilapho kugcina ubukhulu bubonke buphansi. Wonke ama-multifolds enziwe ngensimbi, lokhu kuvumela ama-valve aphikisayo e-BOST ukuthi asebenze nezingcindezi ezifika ku-350 bar (5075 PSI) futhi kuqinisekisa ukumelana okuphezulu okugqokwa ukuze kuzuze impilo ewusizo yamavalvu. Ukuze kube nokumelana okwanele esenzweni sama-ejenti abolayo, umzimba we-valve nezingxenye zangaphandle azikho ngaphansi kokwelashwa kwe-zinc plating. Umzimba we-valve usezingeni kuzo zonke izindawo eziyisithupha ukuze uthole ukusebenza kahle kokwelashwa. Ngezicelo ezivezwe ikakhulukazi ezintweni ezilimazayo (isb. izicelo zasolwandle) ukwelashwa kwe-zinc-nickel kuyatholakala uma ucelwa.  amavalvu atholakala ngosayizi ukusuka ku-BSPP 1/4 "kuya ku-BSPP 1/2" ngamakhono okusebenza afika ku-60 lpm (15,9 gpm). Ngaphezu kwalokho, ububanzi bezilungiselelo ezihlukahlukene kanye nezilinganiso ezahlukene zokuhlola ziyatholakala ukuze zivumelane kangcono nazo zonke izinhlobo zezinhlelo zokusebenza. Ukuze usebenze kahle kuhle ukulinganisa i-valve yokulinganisa ngenani elingu-30% ngaphezu komthwalo omkhulu womsebenzi.