Ivalve yokumisa, ekwabizwa ngokuba yivalve yokusika, yivalve yokutywina ngenkani kunye nohlobo lwesivalo esisikiweyo. Ngokwendlela yokudibanisa, yahlulahlulwe yaba ziindidi ezintathu: uqhagamshelo lweflange, uqhagamshelo lwentambo, kunye noqhagamshelo lwe-welding.
Olu hlobo lwevalve yokuvala lufaneleke kakhulu ukuvala okanye ukulungelelanisa kunye ne-throttling. Ngenxa yokuba ukuvulwa okanye ukuvala i-valve stem yolu hlobo lwevalve lufutshane, kwaye inomsebenzi othembekileyo wokuvala, kwaye ngenxa yokuba utshintsho lwesigxina se-valve luhambelana ngokuthe ngqo kwi-stroke ye-valve disc, ifaneleke kakhulu ukulungiswa kokuhamba.
I-valve yokuvala yenzelwe ukungena okuphantsi kunye nokuphuma okuphezulu, injongo kukwenza ukuchasana kokuhamba kuncinci kwaye ugcine umgudu xa uvula i-valve. Ngexesha elifanayo, xa i-valve ivaliwe, i-gasket phakathi kwe-valve ye-valve kunye ne-valve cover kunye nokupakisha ngeenxa zonke kwi-valve stem ayiyi kugxininiswa, kwaye ayiyi kugxininiswa kuxinzelelo kunye nokushisa kwendawo ephakathi ixesha elide, elinokwandisa ubomi benkonzo kunye nokunciphisa amathuba okuvuza. Ukongezelela, ukupakishwa kunokutshintshwa okanye kufakwe xa i-valve ivaliwe, ekulungele ukugcinwa.
Abantu abaninzi bacinga ukuba ivalve yokuvala iphantsi kwaye iphezulu, kodwa akunjalo. Ngokubanzi, ivalve yokuvala iphantsi kwaye iphezulu, kodwa kukho iimeko ezikhethekileyo apho ivalve yokuvala iphezulu kwaye iphantsi:
1. Ivalve yokumisa uxinzelelo oluphezulu kunye nobubanzi obungaphezulu kwe-100mm.
2. Iivalve ezimbini zokuvala ezikuluhlu kumbhobho odlulayo, ivalve yesibini yokuvala ifuna “i-high inlet kunye ne-low outlet”
3. Ukukhutshwa kwebhoyila kunye nevalve yokumisa umoya
4. Ivalve ye-Electromagnetic ekhawulezayo yokuqhawuka
Ixesha lokuposa: Sep-14-2023