I Ivalvu yoLawulo lobushushulisango lokuvula nelokuvala. Icala lokuhamba kwesango lithe nkqo kwicala lolwelo. Ivalvu yoLawulo loBushushu inokuvulwa ngokupheleleyo kwaye ivalwe ngokupheleleyo, kwaye ayinakulungiswa okanye iqhotyiswe. Ivalvu yoLawulo loBushushu ivalwe ngokudibana phakathi kwesihlalo sevalvu kunye nepleyiti yesango. Ngokwesiqhelo, umphezulu wokutywina uya kuba ngaphezulu ngezinto zesinyithi ukwandisa ukumelana nokuguguleka, ezifana nokugquma i-1Cr13, i-STL6, intsimbi engatyiwayo, njl. Isango linesango eliqinileyo kunye nesango elithambileyo. Ngokweesango ezahlukeneyo, iValvu yoLawulo loBushushu yahlulwe yaba yiValvu yoLawulo loBushushu oluqinileyo kunye neValvu yoLawulo loBushushu oluthambileyo.

Inxalenye yokuvula neyokuvala yeIvalvu yoLawulo lobushushuyisango, kwaye indlela yokuhamba kwesango ihambelana ngqo necala lolwelo. Ivalvu yoLawulo loBushushu inokuvulwa ngokupheleleyo kwaye ivalwe ngokupheleleyo, kwaye ayinakulungiswa okanye iqhotyiswe. Isango lineendawo ezimbini zokutywina. Iindawo ezimbini zokutywina zemo esetyenziswa kakhulu yiValvu yoLawulo loBushushu zenza imilo ye-wedge. I-engile ye-wedge iyahluka ngokweeparamitha zevalvu, ngokuqhelekileyo yi-5°, kunye ne-2°52′ xa ubushushu obuphakathi bungekho phezulu. Isango leValvu yoLawulo loBushushu le-wedge linokwenziwa libe lilonke, elibizwa ngokuba yi-rigid gate; linokwenziwa libe yisango elinokuvelisa ukuguquguquka okuncinci ukuphucula ubuchule balo kunye nokulungisa ukuphambuka kwe-engile yomphezulu wokutywina ngexesha lokucubungula. Ipleyiti ibizwa ngokuba yi-elastic gate. Xa iValvu yoLawulo loBushushu ivaliwe, umphezulu wokutywina unokutywinwa kuphela ngoxinzelelo oluphakathi, oko kukuthi, ukuxhomekeka kuxinzelelo oluphakathi ukucinezela umphezulu wokutywina wesango kwisihlalo sevalvu kwelinye icala ukuqinisekisa ukutywinwa komphezulu wokutywina, okuzitywina ngokwakho. Uninzi lweeValve zoLawulo loBushushu zivalwa ngenkani, oko kukuthi, xa ivalve ivaliwe, isango kufuneka linyanzeliswe kwisihlalo sevalve ngamandla angaphandle ukuqinisekisa ukuqina komphezulu wokutywina. Isango leValve yoLawulo loBushushu lihamba ngokuthe ngqo kunye nesiqu sevalve, esibizwa ngokuba yiValve yoLawulo loBushushu yentonga yokuphakamisa, eyaziwa ngokuba yiValve yoLawulo loBushushu yentonga ephakamayo. Ngokwesiqhelo, kukho imisonto yetrapezoidal kwinduku yokuphakamisa. Nge-nut ephezulu yevalve kunye nomjelo wesikhokelo emzimbeni wevalve, intshukumo ejikelezayo iguqulwa ibe yintshukumo ethe ngqo, oko kukuthi, i-torque yokusebenza iguqulwa ibe yi-operating thrust. Xa ivalve ivuliwe, xa ukuphakama kwesango kulingana ne-1:1 amaxesha ububanzi bevalve, umjelo wolwelo awuthintelwa, kodwa le ndawo ayinakujongwa ngexesha lokusebenza. Ekusetyenzisweni kwangempela, umphezulu wesiqu sevalve usetyenziswa njengophawu, oko kukuthi, indawo apho ingenakuvulwa khona, njengendawo yayo evulekileyo ngokupheleleyo. Ukuze kuqwalaselwe into yokutshixa ebangelwa kukutshintsha kobushushu, idla ngokuvulelwa kwindawo ephezulu, ize ibuyele kwi-1/2-1 turn, njengendawo yevalvu evuleke ngokupheleleyo. Ke ngoko, indawo evuleke ngokupheleleyo yevalvu imiselwa ngokwendawo yesango, oko kukuthi, istroke. Kwezinye iiValve zoLawulo loBushushu, i-stem nut ibekwa kwisango, kwaye ukujikeleza kwesondo lesandla kuqhuba i-valve stem ukuba ijikeleze, nto leyo eyenza isango liphakame. Olu hlobo lwevalvu lubizwa ngokuba yi-rotary stem Temperature Control Valve, okanye i-dark stem Temperature Control Valve.