Shaqada eewaalka dheelitirka lidka ku ah saliidda, oo sidoo kale loo yaqaan valve holding load, waa in la isticmaalo cadaadiska hadhka si loo ilaaliyo culayska oo looga hortago in rarka uu ka dhaco xakamaynta marka cadaadiska saliidda ee curiyaha firfircooni uu guuldareysto. Waalka noocaan ah wuxuu inta badan ku yaal meel u dhow jileeyaha wuxuuna si wax ku ool ah u xakameyn karaa dhaqdhaqaaqa culeyska xad dhaafka ah ee dhululubada iyo matoorada.
Xulashada valve-ka-hortagga habboon ee ku habboon ayaa muhiim u ah hubinta waxqabadka nidaamka. Xakamaynta Saliida Bost waxay bixisaa noocyo kala duwan oo ah waalka ka-hortagga isku-dheellitirka iyo qaybaha kontoroolka dhaqdhaqaaqa si loo daboolo baahiyaha waxqabadka ee codsiyo badan oo kala duwan. Waxaad ka dooran kartaa qaar ka mid ah qaybaha ugu badan ee la isticmaalo ka-hortagga isku-dheellitirka-iska-hortagga ee ku saleysan baahidaada codsiga.
Koontaroolada dhululubada ee raba inay yareeyaan wakhtiga fidinta iyada oo aan la kordhin awoodda socodka bamka, waalka ka-hortagga ee dib u soo kabashada ayaa la dooran karaa.
Kala duwanaanshaha buuxa ee xajinta xakamaynta saliida waxaa ka mid ah: valves check valves, valves counter balance, valves counter balance with regeneration, valves for motors including double cross valve valves, hal/ double counterbalance with brake release and movement control , load dhimista iyo cadaadiska cadaadiska, kormeerka iyo valves-ka cabbiraadda, nidaamiyayaasha socodka iyo qaar kaloo badan.
Si loo bixiyo tusaale gaar ah, valves-ka-hortagga culeyska-xajinta dib-u-soo-celinta ee ay soo saarto Xakamaynta Saliidda Bost waxa ku jira noocyo kala duwan, sida qaabaynta laba-geesoodka ah, noocyada cadaadiska-xasaasiga ah iyo kuwa-solenoid-ka-koontaroolada.
Waalka ka-hortagga waa isku-dar ah waalka gargaarka ee duuliyaha ku shaqeeya iyo waalka hubinta socodka xorta ah. Marka loo isticmaalo sida waalka-xajinta rarka ee nidaamka hydraulic, waalka ka-hortagga waxay ka hortagtaa saliidda inay ka soo baxdo dhululubada taas oo ilaalinaysa culeyska. Haddii aan la helin mashiinnadan, haddii socodka saliidda uu ka baxo xakamaynta, culeyska lama xakameyn karo.
Guud ahaan, fahamka iyo xulashada waalka ka-hortagga ee ku habboon shuruudaha codsigaaga ayaa ah tillaabooyin muhiim ah oo lagu hubinayo badbaado, hawl-qabad hufan oo nidaamka biyo-saarkaaga. Waxaan rajeynayaa in macluumaadka kor ku xusan ay ku caawin doonaan. Haddii aad u baahan tahay macluumaad dheeraad ah oo ku saabsan nooc gaar ah ama faahfaahinta wax iibsiga, fadlan la tasho soo saaraha ama qaybiyaha u dhigma.