Chifukwa cha kukangana kochepa pakati pa malo otsekera panthawi yotsegula ndi kutseka, valavu yotseka ndi yolimba ndipo imakhala ndi kutalika kochepa kotsegula. Sikoyenera kokha kupanikizika kwapakati ndi kochepa, komanso koyenera kugwiritsa ntchito zida zotenthetsera kwambiri. Potengera kupsinjika kwa tsinde la valavu, pamwamba potsekereza pa diski ndi pamwamba potsekereza pa mpando wa valavu zimalumikizidwa kwambiri kuti zilepheretse kuti chotenthetseracho chisayende, chomwe ndi valavu yotsekereza yokakamizidwa. Kuti zigwirizane ndi kugwiritsa ntchito nthawi zosiyanasiyana, pali mitundu inayi ya mavalavu otseka omwe ali ndi ntchito zosiyanasiyana: valavu yotseka ya plunger, valavu yotseka yolunjika, valavu yotseka yachizolowezi ndi valavu yotseka yongodya. Kodi kusiyana pakati pawo ndi kotani?
1) Malo olowera ndi otulukira a valavu yoyimitsa ya mtundu wa ngodya ali pa ngodya ya madigiri 90. Vavu yoyimitsa ya mtundu wa ngodya nthawi zambiri imayikidwa pakona ya payipi ndipo imatha kusintha cholumikizira cha payipi pakona.
Mu valavu yotseka ya mtundu wa ngodya, madziwo amafunika kusintha njira yake kamodzi kokha, kotero kuti kutsika kwa mphamvu kudzera mu valavu kumakhala kochepa kuposa kwa valavu yotseka yachizolowezi.
2) Makhalidwe a kapangidwe kake ndi luso losankha valavu yoyimitsa kayendedwe ka ...
3) Valavu ya mtundu wa Plunger: Mtundu uwu wa valavu ya globe ndi wosiyana ndi valavu ya globe yachikhalidwe. Mu valavu iyi, mpando wa disc ndi valavu nthawi zambiri umapangidwa kutengera mfundo ya plunger. Chophimba cha valavu chimapukutidwa kuti plunger ndi tsinde la valavu zilumikizane, ndipo kutseka kumachitika ndi mphete ziwiri zomata zomata zomwe zimayikidwa pa plunger. Mphete ziwiri zomata zomata zimalekanitsidwa ndi mphete ya sleeve, ndipo mphete yomata yozungulira plunger imakanizidwa mwamphamvu ndi katundu womwe umagwiritsidwa ntchito pa bonnet ndi nati ya bonnet. Mphete yomata yomata imatha kusinthidwa ndipo ingapangidwe ndi zinthu zosiyanasiyana. Vavu imagwiritsidwa ntchito makamaka "kutsegula" kapena "kutseka", koma ili ndi mawonekedwe apadera a plunger kapena kolala yapadera. Vavu ya double seat pressure balance straight-through plunger valve. Plunger imatha kusuntha mmwamba ndi pansi m'mphete zomata zapamwamba ndi zapansi ndi chogwirira chotsogolera. Chogwirira chotsogolera chili ndi dzenje lolinganiza kupanikizika, ndipo kupanikizika kwapakati kumatha kulowa m'mimba mwa chogwirira chotsogolera kudzera m'dzenje laling'ono. Kutseka kungatheke potseka pamwamba pa plunger ndi mphete yotsekera kawiri m'thupi la valavu, ndipo kuyenda kwakukulu kumatha kudutsa. Chifukwa plunger ndi yayifupi, liwiro lotsegula ndi kutseka ndi lalikulu kuposa la valavu ya plunger yachizolowezi; kuthamanga kumayenderana molunjika kudzera mu valavu ya plunger, Plunger ndi yopanda kanthu, ndipo zipinda zapamwamba ndi zapansi zili ndi mabowo odutsa. Tsinde la valavu limalumikizidwa ndi chogwirira chapamwamba chotsekera ndi nati kuti ligwirizane ndi kupanikizika m'zipinda zapamwamba ndi zapansi za plunger ndikusunga khama potsegula ndi kutseka. Komabe, tsinde la valavu liyenera kukhala ndi chisindikizo chapamwamba ndi chisindikizo chonyamula, ndipo liwiro lotsegula ndi kutseka ndi lochepa.
1) Malo olowera ndi otulukira a valavu yoyimitsa ya mtundu wa ngodya ali pa ngodya ya madigiri 90. Vavu yoyimitsa ya mtundu wa ngodya nthawi zambiri imayikidwa pakona ya payipi ndipo imatha kusintha cholumikizira cha payipi pakona.
Mu valavu yotseka ya mtundu wa ngodya, madziwo amafunika kusintha njira yake kamodzi kokha, kotero kuti kutsika kwa mphamvu kudzera mu valavu kumakhala kochepa kuposa kwa valavu yotseka yachizolowezi.
2) Makhalidwe a kapangidwe kake ndi luso losankha valavu yoyimitsa kayendedwe ka ...
3) Valavu ya mtundu wa Plunger: Mtundu uwu wa valavu ya globe ndi wosiyana ndi valavu ya globe yachikhalidwe. Mu valavu iyi, mpando wa disc ndi valavu nthawi zambiri umapangidwa kutengera mfundo ya plunger. Chophimba cha valavu chimapukutidwa kuti plunger ndi tsinde la valavu zilumikizane, ndipo kutseka kumachitika ndi mphete ziwiri zomata zomata zomwe zimayikidwa pa plunger. Mphete ziwiri zomata zomata zimalekanitsidwa ndi mphete ya sleeve, ndipo mphete yomata yozungulira plunger imakanizidwa mwamphamvu ndi katundu womwe umagwiritsidwa ntchito pa bonnet ndi nati ya bonnet. Mphete yomata yomata imatha kusinthidwa ndipo ingapangidwe ndi zinthu zosiyanasiyana. Vavu imagwiritsidwa ntchito makamaka "kutsegula" kapena "kutseka", koma ili ndi mawonekedwe apadera a plunger kapena kolala yapadera. Vavu ya double seat pressure balance straight-through plunger valve. Plunger imatha kusuntha mmwamba ndi pansi m'mphete zomata zapamwamba ndi zapansi ndi chogwirira chotsogolera. Chogwirira chotsogolera chili ndi dzenje lolinganiza kupanikizika, ndipo kupanikizika kwapakati kumatha kulowa m'mimba mwa chogwirira chotsogolera kudzera m'dzenje laling'ono. Kutseka kungatheke potseka pamwamba pa plunger ndi mphete yotsekera kawiri m'thupi la valavu, ndipo kuyenda kwakukulu kumatha kudutsa. Chifukwa plunger ndi yayifupi, liwiro lotsegula ndi kutseka ndi lalikulu kuposa la valavu ya plunger yachizolowezi; kuthamanga kumayenderana molunjika kudzera mu valavu ya plunger, Plunger ndi yopanda kanthu, ndipo zipinda zapamwamba ndi zapansi zili ndi mabowo odutsa. Tsinde la valavu limalumikizidwa ndi chogwirira chapamwamba chotsekera ndi nati kuti ligwirizane ndi kupanikizika m'zipinda zapamwamba ndi zapansi za plunger ndikusunga khama potsegula ndi kutseka. Komabe, tsinde la valavu liyenera kukhala ndi chisindikizo chapamwamba ndi chisindikizo chonyamula, ndipo liwiro lotsegula ndi kutseka ndi lochepa.
Nortech ndi m'modzi mwa opanga ma valve otsogola ku China omwe ali ndi satifiketi ya ISO9001 yapamwamba.
Zinthu zazikulu:Valavu ya Gulugufe,Valavu ya Mpira,Valavu ya Chipata,Valavu Yowunikira,Globe Vavlve,Zipangizo za Y,Chotsukira Magetsi,Zipangizo zoyezera mpweya (Pneumatic Acurators).
Nthawi yotumizira: Ogasiti-11-2021