Valve ili ndi mitundu yosiyanasiyana ya ntchito ndi mitundu, yomwe imatha kugawidwa m'mitundu iwiri:

1. valve automatic: valve yomwe imagwira ntchito yokha malinga ndi mphamvu ya sing'anga (madzi ndi mpweya).Monga valavu yowunika, valavu yotetezera, valavu yowongolera, valavu yothira, valavu yochepetsera kuthamanga, ndi zina zotero.

2. valavu yoyendetsa galimoto: valve yogwiritsidwa ntchito ndi manual, magetsi, hydraulic ndi pneumatic, monga butterfly valve, valve valve, valve gate, stop valve, valve flow flow valve, plug valve, etc.

Malingana ndi njira yoyendetsera galimoto, ikhoza kugawidwa m'magulu awiri:

1. Zamagetsi: zoyendetsedwa ndi mota kapena zida zina zamagetsi.

2. Hydraulic: yoyendetsedwa ndi (madzi, mafuta).Mtundu wa swing wotsetsereka

3. Mpweya;gwiritsani ntchito mpweya woponderezedwa kuti muyendetse valavu kuti mutsegule ndi kutseka.

4. Buku: mothandizidwa ndi handwheel, chogwirira, lever kapena sprocket, imayendetsedwa ndi anthu.Torque yotumizira ikakhala yayikulu, imakhala ndi zida zochepetsera liwiro monga gudumu ndi zida.

Malinga ndi cholinga, valavu akhoza kugawidwa mu:

1. Ntchito yosweka: imagwiritsidwa ntchito polumikiza kapena kudula sing'anga yamapaipi, monga valavu yoyimitsa, valavu yachipata, valavu ya mpira, valve ya Cambodian, ndi zina zotero.

2. Yang'anani ntchito: yomwe imagwiritsidwa ntchito poletsa kubwereranso kwapakati, monga valve yowunika.

3. Ntchito yoyang'anira: yomwe imagwiritsidwa ntchito poyang'anira kuthamanga ndi kutuluka kwa sing'anga, monga kuwongolera valavu ndi valavu yochepetsera mphamvu.

4.Distribution ntchito: imagwiritsidwa ntchito kusintha kayendedwe ka kayendedwe kapakati ndi kugawa kwapakati, monga pulagi ya njira zitatu, valve yogawa, ndi kuyeretsa.

5. Valavu yotetezera: pamene kuthamanga kwapakati kupitirira mtengo wotchulidwa, kumagwiritsidwa ntchito kutulutsa zowonongeka zowonongeka ndikuwonetsetsa chitetezo cha mapaipi ndi zipangizo, monga valavu yachitetezo ndi valavu yadzidzidzi.

6. Magulu ena apadera: monga valavu yowonongeka, valavu yotulutsa mpweya, valavu yowonongeka, ndi zina zotero.

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