Flangedma valve pachipatandi mtundu wa valve yachipata yolumikizidwa ndi flanges. Iwo makamaka amatsegula ndi kutseka ndi kayendedwe ofukula kwa chipata motsatira mzere wapakati pa ndimeyi ndipo amagwiritsidwa ntchito kwambiri poletsa kutseka kwa machitidwe a mapaipi.

(Chithunzi:Carbon steel flanged gate valve valveDN65)

Mitundu yake imatha kugawidwa m'magulu awiri potengera mawonekedwe apangidwe: molingana ndi mawonekedwe amayendedwe a tsinde lachipata, pali tsinde lowonekera ndi mitundu yobisika yobisika. Pamene tsinde lowonekera valavu yachitsulo yachitsulo imatsegulidwa kapena kutsekedwa, tsinde limatuluka kunja kwa chivundikiro cha valve, kulola kuyang'ana mwachindunji kwa digiri yoyamba. Ndizoyenera zochitika zomwe zimafuna kuyang'anitsitsa nthawi yeniyeni, monga madzi a mutauni ndi malo opopera madzi. Tsinde la chobisika tsinde chipata valavu handwheel sikupitirira kupyola chivundikiro cha valve. Ili ndi kaphatikizidwe kakang'ono ndipo ndi koyenera nthawi zocheperako monga mapaipi apansi panthaka Wells ndi zomera zamankhwala zokhala ndi zida zowuma. Malinga ndi kapangidwe ka mbale ya pachipata, pali mtundu wa wedge ndi mtundu wofananira. Mbalame ya chipata cha wedge imakhala yooneka ngati mphero, yokhala ndi chisindikizo cholimba, ndipo ndi yoyenera pazochitika zapakati komanso zopanikizika kwambiri (PN1.6 ~ 16MPa). Pakati pawo, mbale zotanuka pachipata zimatha kubweza kusiyana kwa kutentha ndipo nthawi zambiri zimagwiritsidwa ntchito pamapaipi onyamula nthunzi ndi mafuta otentha. Ma mbale a zipata zofananira ali ndi mbali ziwiri zofanana ndipo amasindikizidwa ndi kukakamiza kwa sing'anga. Amagwiritsidwa ntchito kwambiri paziwonetsero zotsika kwambiri komanso zazitali zazikulu zokhala ndi DN300 kapena kupitilira apo, monga mapaipi akuluakulu amadzi. Iwo ali otsika kutsegula ndi kutseka kukana ndipo ndi oyenera ntchito pafupipafupi.

Pogwiritsira ntchito, chifukwa cha kukhazikika kwapadera ndi kudulidwa kwa maulumikizi a flange, amagwiritsidwa ntchito kwambiri m'mafakitale ambiri: mtundu wa ndodo yobisika kapena mtundu wa mbale yofanana ndi chipata umagwiritsidwa ntchito m'matauni ndi kumanga madzi ndi ngalande, komanso mapaipi otetezera moto. M'makampani a petrochemical, ma valve a pachipata cha wedge amagwiritsidwa ntchito nthawi zambiri pamapaipi amafuta osakanizidwa ndi mafuta oyeretsedwa pansi pazovuta kwambiri. Pankhani ya mphamvu ndi mphamvu, mavavu a chipata cha wedge okhala ndi kutentha kwabwinoko nthawi zambiri amasankhidwa kuti azitha kuziziritsira madzi ndi mapaipi a nthunzi ya boiler. Otsika-anzanu kufanana chipata mavavu ndi kukana amphamvu zonyansa ndi oyenera mafakitale zinyalala kachitidwe madzi mu zitsulo ndi mankhwala madzi. Popanga chisankho, kupanikizika, malo ndi makhalidwe apakati ayenera kuganiziridwa. Kuchita kwake kodalirika kumapangitsa kukhala gawo lalikulu la machitidwe a mapaipi m'mafakitale osiyanasiyana.

Kusankhidwa kwa mtundu wa ma valve a chipata cha flanged kumafunika kuganizira kupanikizika, malo ndi makhalidwe apakati. Kuchita kwake kodalirika kotseka kumapangitsa kuti ikhale gawo lowongolera pamapaipi amakampani osiyanasiyana. Ngati muli ndi zosowa zina, chonde titumizireni pansipa. Monga wopanga ma valve a Industrial gate wazaka 20, Jinbin Valve amakupatsirani mayankho aukadaulo. (Chipata Chachipata Chokhala Ndi Mitengo)