Mavavu agulugufe amagwira ntchito yofunika kwambiri pankhani yowongolera kutuluka kwa madzi m'mapaipi. Mu ntchito za mafakitale,Mavavu agulugufe a PVCndi chisankho chodziwika chifukwa cha kulimba kwawo komanso kuchita bwino. M'nkhaniyi, tiwona mozama ntchito za ma valve agulugufe, makamaka opangidwa ndi PVC, ndikuwona chifukwa chake ali ofunikira m'mafakitale osiyanasiyana.

Ntchito ya valavu ya butterflyndi yosavuta koma yofunika kwambiri. Kwenikweni, imayendetsa kutuluka kwa madzimadzi pogwiritsa ntchito diski yotchedwa "gulugufe" yomwe ili pakati pa chitoliro. Mosiyana ndi mavavu a mpira, omwe amagwiritsa ntchito mpira kuwongolera kuyenda, chimbale cha agulugufe chimayikidwa pamtengo wozungulira. Pamene valavu ili pamalo otsekedwa, diskiyo imakhala yosakanikirana ndi kutuluka kwa madzimadzi, ndikulepheretsa madziwo. Ikatsegulidwa, diskiyo imazungulira molingana ndi momwe madzi amayendera, zomwe zimapangitsa kuti madzi azitha kudutsa.

Zinthu za PVC zimawonjezera gawo lina la magwiridwe antchito komanso kudalirika kwa mavavu agulugufe. PVC, kapena polyvinyl chloride, ndi thermoplastic yomwe ili ndi kukana kwamphamvu kwamankhwala ndipo ndiyoyenera kugwiritsidwa ntchito mosiyanasiyana. Kuphatikiza pa kugonjetsedwa ndi mankhwala owononga tizilombo, PVC ndi yopepuka, yosavuta kuyiyika, komanso yotsika mtengo, zomwe zimapangitsa kuti zikhale zofunikira kwambiri popangira ma valve agulugufe.

Mavavu agulugufe a PVC ndi otchukam'mafakitale komwe kumayenda kwamadzi owononga kumakhala kofala. Kukhoza kwake kupirira mankhwala ovuta komanso kutentha kwambiri kumapangitsa kuti ikhale yofunika kwambiri m'mafakitale opangira mankhwala, malo opangira madzi ndi machitidwe oyendetsa madzi onyansa. Kukhazikika ndi kulimba kwa ma valve agulugufe a PVC kumatsimikizira kuti atha kupereka ntchito yayitali, yodalirika m'malo ovuta.

Kuphatikiza apo, ma valve agulugufe a PVC amagwiritsidwanso ntchito kwambiri potengera madzi ndi madzi ena osawononga. Kusalala kwake mkati kumachepetsa kutsika kwamphamvu ndi chipwirikiti, ndikupangitsa kuti ikhale chisankho chopatsa mphamvu pakuwongolera madzimadzi. Izi zimapangitsa ma valve agulugufe a PVC kukhala chisankho chodziwika bwino m'machitidwe a HVAC, njira zothirira ndi njira zogawa madzi.

Chinthu china chofunika kwambiri pa ntchito ya ma valve a butterfly, kuphatikizapo opangidwa ndi PVC, ndi kuthekera kwawo kuyendetsa madzi oyenda. Mwa kusintha mbali ya diski mkati mwa valve, kuthamanga kwa magazi kungathe kuyendetsedwa bwino. Izi zimapangitsa kuti ma valve agulugufe akhale osinthika kwambiri chifukwa amatha kugwiritsidwa ntchito kuwongolera kutuluka kwamadzi m'njira zosiyanasiyana zamafakitale, kuwonetsetsa kuti magwiridwe antchito ndi abwino.

Mwachidule, ntchito ya mavavu agulugufe, makamaka opangidwa ndi PVC, ndi yofunika kwambiri pa nkhani ya mafakitale kulamulira madzimadzi. Kukhoza kwake kuyendetsa kayendedwe ka madzi, kupirira mankhwala owononga komanso kupereka chithandizo chodalirika kumapangitsa kuti ikhale yofunika kwambiri m'mafakitale ambiri. Kaya amayang'anira kayendedwe ka mankhwala owononga m'fakitale yokonza kapena kuwongolera kagawidwe ka madzi m'makina am'matauni, ma valve agulugufe a PVC amagwira ntchito yofunika kwambiri powonetsetsa kuti njira zambiri zamafakitale zikuyenda bwino komanso moyenera.