Vavu ntchito kulamulira kayendedwe ndi kutseka kwa actuator mbali zonse pozindikira kutsika olamuliridwa katundu kuti samathawa kukokedwa ndi kulemera kwake, monga valavu salola cavitation iliyonse ya actuator. Ndizosakhudzidwa ndi kupanikizika kwa msana ndipo zimagwiritsidwa ntchito pamene ma overcenters abwino sagwira ntchito bwino pakuwongolera katundu, kulola kuti kupanikizika komwe kumakhazikitsidwa ndi dongosolo kugwiritsidwe ntchito kuyendetsa ma actuators angapo mndandanda. Malumikizidwe a Flange amalola kuti valavu ikhazikike mwachindunji pa actuator.

Mavavu a BOST a mndandandawa ndi mavavu opindika pawiri: amagwira ntchito yochirikiza ndi kuwongolera kutsika kwa katundu mbali ziwiri. Ma valve owirikiza kawiri amagwiritsidwa ntchito popanga zinthu zokhala ndi zolemetsa ziwiri zomwe zimafunikira kutsimikizira kukhazikika pamalo ogwirira ntchito komanso kuwongolera kayendedwe kawo  mavavu ndi ma valve otseguka, mwachitsanzo, amatha kuyikidwa mwachindunji pa actuator (nthawi zambiri silinda ya hydraulic). Kupyolera mu flanging mizere yakumbuyo kuchokera ku silinda imagwirizanitsidwa ndi mzere wolamulidwa, kudyetsedwa mu gawo loperekera ndi kutuluka kwaulere kudzera muzitsulo ziwiri zowunika. Ma valve Counterbalance ndi ma valve oyendetsa ndege. Kukakamiza chingwe kumbali inayo kupita ku katundu, mzere wa woyendetsa ndege umagwiritsidwa ntchito ndikuwongolera mzere wophatikizika kuti ukhale ndi katundu wopondera ndikupewa patali. Chifukwa cha kuchepa kwa chiwerengero pakati pa mzere wonyamula katundu ndi mzere woyendetsa ndege wa hydraulic (pilot ratio), kupanikizika kofunikira kuti mutsegule ma valve ndi otsika kusiyana ndi kukakamiza kokhazikitsa. Ma valavu a  double counterbalance valve amathanso kugwira ntchito yoteteza ma hydraulic system ndi makina olumikizidwa ndi makinawo, kukhala ngati valavu yoletsa kugwedezeka pamene kuthamanga kwapamwamba kumachitika chifukwa chakuchulukira kapena kukhudzidwa mwangozi. Ntchitoyi ndi yotheka pokhapokha ngati mzere wobwerera kwa wogawa ukugwirizana ndi kukhetsa. Ndi valavu yopingasa yolipiridwa ndi semi-compensated: kuyika kwa valavu sikukhudzidwa ndi kukakamiza kotsalira pa mizere yobwerera, zopinga zomwe m'malo mwake zimawonjezera kuthamanga kwa woyendetsa kuti atsegule valavu. Valavu yamtunduwu ndiyoyenera kuyika m'makina omwe amaphatikiza ogawa omwe ali ndi zotsekera zotsekera, zogwiritsidwa ntchito zotsekedwa mosalowerera ndale.

Chofunikira kwambiri chothandizira katunduyo ndi chisindikizo cha hydraulic. Pofuna kutsimikizira kuti kusindikiza kumagwira ntchito bwino kwambiri, BOST imaika chidwi kwambiri pa kukwaniritsidwa kwa zigawozo, kuyambira pomanga ndi chitsulo cholimba kwambiri, cholimba ndi chopukutidwa, mpaka kutsimikizira kwa dimensional ndi geometric, komanso kuyezetsa zomwe zasonkhanitsidwa. valavu. Ma  antibalance mavavu ndi ziwalo za m'mavavu amthupi: zigawo zonse zimayikidwa mkati mwa ma hydraulic manifold, yankho lomwe limalola kuyang'anira kuthamanga kwambiri ndikuchepetsa miyeso yonse. Manifolds onse amapangidwa ndi chitsulo, izi zimalola kuti mavavu a BOST counterbalance agwire ntchito molimbika mpaka 350 bar (5075 PSI) ndikutsimikizira kukana kwakukulu kuvala kuti apindule ndi moyo wofunikira wa valavu. Pakukana kokwanira ku zochita za zowononga, thupi la mavavu ndi zida zakunja sizimathandizidwa ndi zinc plating. Thupi la valavu limayikidwa pamalo onse asanu ndi limodzi kuti azitha kuchiza bwino. Pazifukwa zomwe zimakhudzidwa ndi zinthu zowononga kwambiri (monga zapamadzi) mankhwala a zinki-nickel amapezeka ngati afunsidwa.  mavavu akupezeka mu makulidwe kuyambira BSPP 1/4 "mpaka BSPP 1/2" kuti azigwira ntchito mpaka 60 lpm (15,9 gpm). Kuphatikiza apo, masinthidwe osiyanasiyana ndi mareyitidwe osiyanasiyana oyesa amapezeka kuti agwirizane ndi mitundu yonse ya mapulogalamu. Kuti mugwiritse ntchito bwino, ndikofunikira kuti muyese valavu yopingasa pamtengo wa 30% kuposa kuchuluka kwa ntchito.