PVC (polyvinyl chloride) ndi UPVC (unplasticized polyvinyl chloride) ndi zida zomwe zimagwiritsidwa ntchito kwambiri popanga zopangira mavavu osiyanasiyana.

Zidazi zimadziwika chifukwa cha kulimba, kukana kwa dzimbiri, komanso kukwanitsa kukwanitsa, zomwe zimawapangitsa kukhala zosankha zotchuka pamagwiritsidwe osiyanasiyana. Mtundu umodzi wa ma valve oyenerera omwe nthawi zambiri amapangidwa kuchokera ku PVC kapena UPVC ndi valve ya butterfly.

Mfundo ya valavu ya gulugufe ya PVC imachokera pa mapangidwe osavuta koma ogwira mtima. Valavu imakhala ndi disc, yomwe imayikidwa pa shaft yozungulira. Pamene valavu ili pamalo otsekedwa, diskiyo imakhala yosakanikirana ndi kutuluka kwa madzimadzi, ndikuletsa bwino. Pamene valavu imatsegulidwa, diski imazungulira mofanana ndi kutuluka, kulola kuti madziwo adutse.

Kugwiritsa ntchito PVC kapena UPVC pomanga ma valve agulugufe kumapereka maubwino angapo. Zidazi ndizopepuka, zomwe zimapangitsa kuti ma valve azitha kugwira ntchito ndikuyika. Zimalimbananso ndi dzimbiri, zomwe zimapangitsa kuti zikhale zoyenera kugwiritsidwa ntchito m'malo osiyanasiyana, kuphatikizapo omwe ali ndi mankhwala kapena nyengo yovuta. Kuphatikiza apo, PVC ndi UPVC sizowopsa komanso zotetezeka kuti zigwiritsidwe ntchito pophatikiza madzi amchere kapena kukonza chakudya.

Malo osalala amkati a PVC ndi ma valve agulugufe a UPVC amachepetsa kukana, kuchepetsa kutsika kwamphamvu komanso kugwiritsa ntchito mphamvu. Izi zimawapangitsa kukhala chisankho chabwino chowongolera kutuluka kwamadzi mudongosolo. Kuphatikiza apo, zidazi sizimasamalidwa bwino, zomwe zimafunikira kusamalidwa pang'ono pa moyo wawo wonse.

Ma valve agulugufe a PVC ndi UPVC amagwiritsidwa ntchito m'mafakitale monga kuthirira madzi, kuthirira, kukonza mankhwala, ndi machitidwe a HVAC. Kusinthasintha kwawo komanso kutsika mtengo kumawapangitsa kukhala chisankho chodziwika bwino pakuwongolera kayendedwe ka madzi, mpweya, ndi madzi ena m'magwiritsidwe osiyanasiyana.

Pomaliza, mfundo ya valavu ya gulugufe ya PVC imachokera ku kusinthasintha kwa disc kuti athetse kutuluka kwa madzi. Kugwiritsa ntchito zida za PVC ndi UPVC pomanga mavavuwa kumapereka maubwino ambiri, kuphatikiza kulimba, kukana dzimbiri, komanso kuchita bwino. Makhalidwewa amapangitsa ma valve agulugufe a PVC ndi UPVC kukhala njira yodalirika komanso yotsika mtengo yowongolera madzimadzi m'mafakitale osiyanasiyana ndi malonda.