Ndodo yolumikizira yopanda mutuvalavu ya mpweya, monga chigawo chachikulu chowongolera mpweya wabwino wa mafakitale ndi makina otumizira mpweya, ili ndi maubwino ambiri. Chofunikira chake chachikulu ndikusiya mawonekedwe odziyimira pawokha a ma valve amtundu wamba. Kupyolera mu njira yophatikizira yolumikizira ndodo yolumikizira, kapangidwe kake kamakhala kosavuta kwambiri, kupangitsa kuti voliyumu ikhale yaying'ono. Ikhoza kugwirizanitsa ndi momwe ntchito ikugwirira ntchito ndi mapangidwe a zida zowuma ndikusunga malo osungira.

Ma Dampers amapezeka nthawi zambiri m'makina opumira m'mafakitale, makina a mpweya wabwino wa subways, ndi ma ducts a gasi a ma boilers. Ma valve a butterfly amagwiritsidwa ntchito kwambiri pamapaipi otumizira madzi amadzi, makina owongolera mpweya, ndi maulalo odulira madzi m'mafakitale a petrochemical.

Kusiyana kwakukulu pakati pa zochepetsera mpweya ndi mavavu agulugufe zagona pakugwiritsa ntchito kwawo komanso kapangidwe kake ka magwiridwe antchito. Chotenthetsera mpweya wa flue chimayang'ana kwambiri kuwongolera kuchuluka kwa mpweya, kuwongolera ndi kudula kwa mpweya (makamaka mpweya, mpweya wa flue ndi fumbi), pomwe ma valve agulugufe amagwira ntchito kwambiri kuzimitsa ndikuwongolera kutuluka kwa zakumwa, mpweya kapena nthunzi. Chifukwa cha mawonekedwe osiyanasiyana apakati ndi zochitika zogwiritsira ntchito, kusiyana kwakukulu kumapangidwa mwadongosolo, kusindikiza kusindikiza ndi zizindikiro za ntchito.

Malinga ndi kamangidwe kake, zotayira za guillotine nthawi zambiri zimatenga ma valavu ambiri, mapulagi kapena ma valve amtundu wa baffle. Zina, monga cholumikizira mpweya wopanda mutu, zimakulitsanso njira yolumikizira mpweya kudzera panjira yolumikizira ndodo. Mapangidwe osindikizira amayang'ana kuchepetsa "kuthamanga kwa mpweya" kuti akwaniritse zofunikira za kukhazikika kwa mpweya mu mpweya wabwino, kuchotsa fumbi, HVAC ndi machitidwe ena. Mavavu agulugufe amakhala ndi ma valve ozungulira ozungulira ngati phata lawo. Chovala cha valve chimazungulira kuzungulira shaft ya valve kuti ikwaniritse kutsegula ndi kutseka. Mapangidwe osindikizira amayang'ana kwambiri "kupewa kutayikira" ndipo amayenera kukwaniritsa mulingo wina wotsutsa. Iwo ndi oyenera zochitika zamadzimadzi zoyendera monga madzi ndi ngalande, makampani mankhwala, ndi mapaipi matenthedwe.

Ponena za zizindikiro zogwirira ntchito, ma valve a mpweya amayang'anitsitsa kulondola kwa kayendetsedwe ka mpweya wa mpweya komanso kukana kukokoloka kwa fumbi kuti athane ndi kuvala kwa zigawo zomwe zimayambitsidwa ndi mpweya wa fumbi. Ma valve a butterfly amatsindika kwambiri pa kutsegula ndi kutseka liwiro, kukana kupanikizika ndi kusindikiza ntchito, komanso moyo wautumiki. Ma valve ena agulugufe othamanga kwambiri amafunikanso kukhala ndi mphamvu yokana cavitation.