Masiku ano, DN1200 yofanana ndi kukula kwakevalavu yoyezera yozungulira yokhala ndi nyundo yolemeraMu workshop ya Jinbin, yamaliza ntchito yonse yopangira ndipo ikugwira ntchito yomaliza yopaka, yomwe ikuyembekezeka kutumizidwa kwa kasitomala. Kumaliza bwino kwa madzi awavalavu yoyezeraSikuti imangowonetsa luso lapamwamba lopangira zinthu la workshop, komanso ikuwonetsa kufunika kwakukulu kwa ma valve akuluakulu oletsa kutseka pang'onopang'ono m'munda wowongolera madzi m'mafakitale.

Ma valve akuluakulu oyesera, omwe ali ndi kapangidwe kake kapadera, ali ndi zinthu zingapo zodziwika bwino. Choyamba, mphamvu yoyenda bwino ndiye phindu lake lalikulu. Valavu yoyesera ya DN1200 flanged imatha kukwaniritsa kufunikira kwa kayendedwe ka madzi oyenda kwambiri, ndi kutayika pang'ono kwa mphamvu panthawi yoyendetsa, zomwe zingathandize bwino magwiridwe antchito a dongosololi. Kachiwiri, ili ndi kukhazikika kwakukulu kwa kapangidwe kake. Yopangidwa ndi zipangizo za alloy zolimba kwambiri, thupi la valve lili ndi makulidwe ofanana a khoma ndipo imatha kupirira zovuta zogwirira ntchito monga kuthamanga kwambiri ndi kutentha kwambiri. Nthawi yake yogwirira ntchito imaposa kwambiri ya valavu yoyesera gulugufe. Kuphatikiza apo, ma valve akuluakulu oyesera ali ndi magwiridwe antchito abwino kwambiri otseka. Kudzera mu kukonza bwino pamwamba potseka ndi pakati pa valve, amatha kuchepetsa kubwerera kwa sing'anga mpaka pamlingo waukulu ndikuwonetsetsa kuti dongosololi likugwira ntchito bwino.

Monga gulu lapamwamba pakati pa valavu yayikulu yachitsulo chopangidwa ndi chitsulo chopangidwa ndi chitsulo, valavu yowunikira yotseka pang'onopang'ono yolimba kwambiri imakhala ndi ntchito zosasinthika m'magawo angapo ofunikira. Mu mapulojekiti opereka madzi m'mizinda, imayikidwa kwambiri pamapaipi akuluakulu otumizira madzi a zomera zamadzi. Siingokwaniritsa kufunikira kwakukulu kwa madzi panthawi yomwe madzi amafika pachimake komanso imaletsa madzi kutsekeka pang'onopang'ono, kuteteza mapaipi ndi zida zopopera. Mu dongosolo la madzi lozungulira la zomera zamphamvu zotentha, valavu iyi yosabwerera imatha kuwongolera bwino momwe madzi ozizira amafikira, kuletsa madzi kubwerera akamatseka, ndikuwonetsetsa kuti zida zopangira madzi zimatsekedwa bwino. Mu zomera zazikulu zotsukira zinyalala, kapangidwe kake kolimba kakhoza kusintha kuti zigwirizane ndi kapangidwe ka zinthu zovuta za zinyalala. Pakadali pano, ntchito yotseka pang'onopang'ono imatha kuchepetsa kugwedezeka kwa mapaipi ndikuchepetsa ndalama zokonzera zida.

Ngati mukufunanso kusintha ma valve akuluakulu, chonde titumizireni uthenga pansipa. Mudzalandira yankho mkati mwa maola 24 ndipo tidzasintha yankho labwino kwambiri kwa inu nokha.