Amanyathelo okukhetha ivalve:
1. Chaza ukusetyenziswa kwe-valve kwisixhobo okanye isixhobo, misela iimeko zokusebenza zevalve: i-medium efanelekileyo, uxinzelelo lokusebenza, ukushisa okusebenzayo kunye nokunye.
2. Ukugqiba i-diameter ye-nominal kunye nemodi yokudibanisa yombhobho odibanisa ne-valve: i-flange, intambo, i-welding, ibhatyi, ukulungiswa ngokukhawuleza, njl.
3. Qinisekisa indlela yokusebenzisa i-valve: i-manual, umbane, i-electromagnetic, i-pneumatic okanye i-hydraulic, i-electronic or hydraulic linkage, njl.
4. Ngokomgangatho ogqithiselwa ngumbhobho, uxinzelelo olusebenzayo kunye nobushushu bokusebenza, izinto zeqokobhe levalvu kunye namalungu angaphakathi akhethiwe: intsimbi engwevu, intsimbi ekhatywayo ethambileyo, intsimbi yentsimbi, intsimbi yekhabhoni, intsimbi yealloyi, intsimbi enganyangekiyo eneasidi. , ingxubevange yobhedu, njl.
5. Khetha iintlobo zeevalvu: iivalve ezivaliweyo, iivalve ezilawulayo, iivalve zokhuseleko, njl.
6. Misela iindidi zeevalvu: iivalve zesango, iivalve zeglobhu, iivalve zebhola, iivalve zebhabhathane, iivalve ze-throttle, iivalve zokhuseleko, iivalve zokunciphisa uxinzelelo, i-steam trap, njl.
7. Ukugqiba iiparameters zevalve: Kwii-valve ezizenzekelayo, ukuxhathisa ukuhamba okuvumelekileyo, umthamo wokukhupha, uxinzelelo lwangasemva, njl.
8. Qinisekisa iiparamitha zejometri zevalve ekhethiweyo: ubude besakhiwo, ifom yokudibanisa i-flange kunye nobukhulu, ulwalathiso lokuphakama kwe-valve emva kokuvula nokuvalwa, ubungakanani bomngxuma we-bolt kunye nenani lokudibanisa, ubukhulu be-valve yonke imilo, njl.
9.Sebenzisa ulwazi olukhoyo: Ikhathalogu yemveliso yeValve, iisampulu zemveliso yevalvu, njl.njl. ukukhetha iimveliso zevalvu ezifanelekileyo.
Isiseko sokukhetha ivalvu:
1. Ukusetyenziswa, iimeko zokusebenza kunye nemodi yokulawula yevalve ekhethiweyo.
2. Iipropati zokusebenza medium: uxinzelelo olusebenzayo, ubushushu bokusebenza, ukusebenza umhlwa, nokuba amasuntswana eqinileyo equlethwe, nokuba medium enetyhefu, nokuba iyatsha, medium explosive, medium viscosity njalo njalo.
3. Iimfuno zeempawu ze-valve fluid: ukumelana nokuhamba, ukukhupha umthamo, iimpawu zokuhamba, ibakala lokutywinwa, njl.
4. Ubungakanani bofakelo kunye neemfuno zomda wenkcazo: i-diameter ye-nominal, imodi yokudibanisa kunye nombhobho kunye nobukhulu bokudibanisa, ubungakanani benkcazo okanye ukunciphisa ubunzima, njl.
5. Iimfuno ezongezelelweyo zokuthembeka kweemveliso zevalve, ubomi benkonzo kunye nokusebenza kobungqina bokuqhuma kwezixhobo zombane. (Ingqalelo kufuneka ihlawulwe xa ukhetha iiparamitha: ukuba i-valve iza kusetyenziselwa iinjongo zokulawula, iiparitha ezongezelelweyo kufuneka zigqitywe ngolu hlobo lulandelayo: indlela yokusebenza, ubuninzi kunye nobukhulu beemfuno zokuhamba, ukuhla koxinzelelo lokuhamba okuqhelekileyo, ukuhla koxinzelelo ekuvaleni, ubuninzi kunye Ubuncinci boxinzelelo lokungena kwesivalo.)
Ngokwesiseko esikhankanywe ngasentla kunye namanyathelo okukhetha ama-valve, xa ukhetha i-valve ngokufanelekileyo nangokuchanekileyo, kuyimfuneko ukuba ube nokuqonda okucacileyo kwesakhiwo sangaphakathi seentlobo ezahlukeneyo zeevalve ukwenzela ukuba wenze ukhetho olufanelekileyo kwiintlobo ezikhethiweyo. Ulawulo lokugqibela lombhobho yivalve. Isivuli sevalvu silawula ipateni yokuhamba okuphakathi kumbhobho. Imilo yomqhubi wevalve yenza ivalve ibe neempawu ezithile zokuqukuqela. Oku kufuneka kuthathelwe ingqalelo xa ukhetha i-valve efanelekileyo kakhulu yofakelo kwinkqubo yepayipi.