Ivalvu yokujonga ibhola
Yintoni ivalvu yokujonga ibhola?
Ivalvu yokujonga luhlobo lwevalvu eyenzelwe injongo enye, ikwayivalvu ezingabuyisiyo.
AIvalvu yokujonga ibholayivalvu elula nethembekileyo enebhola engqukuva njengeyona nto ishukumayo yokuthintela ukuhamba okungasemva. Ngenxa yoyilo lwayo olulula lokuhamba olusebenzayo nolungagcini manzi, ivalvu idla ngokuchazwa kwaye isetyenziswa kwizikhululo zokuphakamisa amanzi amdaka angaphantsi komhlaba. Isihlalo sevalvu esigcweleyo senzelwe ngokukodwa ukuvumela ibhola ukuba ihlale iqine ngaphandle kokungena kwisihlalo sevalvu. Kwi-vacuum okanye ivalvu yokulwa nokukhukula, kusetyenziswa ibhola "edadayo" endaweni "etshonayo".
Iivalvu zokujonga ibholaIqulethe ibhola ehleli esihlalweni, enomngxuma omnye kuphela. Isebenza ngebhola ehamba phezulu nasezantsi ngaphakathi kwevalvu. Isihlalo senziwe ngomatshini ukuze silingane nebhola, kwaye igumbi lenziwe ngendlela ejikelezayo ukuze likhokele ibhola esihlalweni ukuze livale kwaye limise ukuhamba okungasemva. Ibhola inobubanzi obukhulu kancinci kunobo bomngxuma ongasemva (isihlalo). Xa uxinzelelo olungasemva kwesihlalo ludlula olo lungaphezulu kwebhola, ulwelo luyavunyelwa ukuba ludlule kwivalvu. Kodwa xa uxinzelelo olungaphezulu kwebhola ludlula uxinzelelo olungaphantsi kwesihlalo, ibhola ibuyela esihlalweni, yenze isitywino esithintela ukuhamba okungasemva. Ibhola ihamba phezulu nasezantsi ngaphakathi kwevalvu kuxhomekeke ekuhambeni kwaye ivale isihlalo esenziwe ngomatshini xa kungekho kuhamba okanye ukuhamba okungasemva kwenzekayo kwaye ivale isihlalo ukuze imise ukuhamba okungasemva. Iivalvu zokujonga ezinebhola efakwe iBuna-N njengesiqhelo kwaye zineebhola zephenolic ezingamelani nokugqwala kwimidiya erhabaxa. Iivalvu zokujonga ibhola zihlala zikhethwa ukuba zisetyenziswe kwizikhululo zokumpompa njengoko zizicoca ngokwazo njengoko ibhola ijikeleza ngexesha lokusebenza kwaye ayilungiswa ngokuthe nkqo. Ukuba uhlolo lwebhola lwenza ingxolo, kudla ngokuba ngenxa yokungabi namandla aneleyo okumpompa okanye iingxaki zesando samanzi.
Iimpawu eziphambili zevalvu yokujonga ibhola
Iimpawu kunye neenzuzo zeIvalvu yokujonga ibhola
- *ivalvu yokujonga ibhola yiivalvu elula nethembekileyo enebhola engqukuva njengeyona nto ishukumayo yokuthintela ukuhamba okungasemva,uyilo olungenalondolozo, i-suitbale yezikhululo zokunyusela amanzi amdaka angaphantsi komhlaba.
- *Isihlalo sevalvu esigcweleyo senzelwe ngokukodwa ukuvumela ibhola ukuba ihlale ingena imvula ngaphandle kokungena kwivalvu.
- *INortechIvalvu yokujonga ibholaziyazicoca, njengoko ibhola ijikeleza ngexesha lokusebenza nto leyo esusa umngcipheko wokuba ukungcola kubambeke ebholeni.
- *Imbobo epheleleyo negudileyo iqinisekisa ukuhamba ngokupheleleyo kunye nokulahleka koxinzelelo oluphantsi kwaye isusa umngcipheko weediphozithi ezantsi ezinokuthintela ukuvalwa okuqinileyo. Ibhola eqhelekileyo yenzelwe isiseko sesinyithi esinerabha ye-NBR, kwaye ubunzima berabha bulungiselelwe ukuthintela ibhola ukuba ingabambeki esihlalweni. Iibhola ze-polyurethane zifanelekile kwimidiya erhabaxa kwaye xa kufuneka ubunzima beebhola ezahlukeneyo ukuthintela ingxolo kunye nesando samanzi.
Iinkcukacha zobugcisa zevalvu yokujonga ibhola
Iinkcukacha zobugcisa zeIvalvu yokujonga ibhola
| Uyilo kunye noMveliso | I-BS EN12334 |
| Ubuso ngobuso | I-DIN3202 F6/EN558-1 |
| Isiphelo seFlange | EN1092-2 PN10,PN16 |
| Umzimba | I-Ductile iron GGG50 |
| Ibhola | Intsimbi ye-Ductile + i-NBR / intsimbi ye-Ductile + i-EPDM |
| Ububanzi obuqhelekileyo | DN40-DN500 |
| Uvavanyo loxinzelelo | PN10, PN16 |
| Isixhobo esifanelekileyo | Amanzi, amanzi amdaka, njl.njl. |
| Ubushushu benkonzo | 0~80°C(ibhola ye-NBR),-10~120°C(ibhola ye-EPDM) |
Umboniso weMveliso:
Ukusetyenziswa kweevalvu zokujonga ibhola
Olu hloboIvalvu yokujonga ibholaIsetyenziswa kakhulu kwiindawo zokusetyenziswa kwamanzi amdaka, kwizikhululo zamandla nakwimizi-mveliso yenkqubo. Ivalvu yokujonga ibhola ifanelekile ukusetyenziswa kwiindawo ezingcolileyo (ukuya kuthi ga kwi-120˚F) njengoko ivalvu emile okwebhola ithintela ukuqokelelana kokungcola. Ngokwesiqhelo isikhululo sokuphakamisa amanzi amdaka siya kuba nevalvu yokujonga ibhola ukuthintela ukuhamba okungasemva. Ikwasetyenziswa kakhulu kwiindawo zokumpompa ezingafane zijongwe, kuba zifuna ulondolozo olulinganiselweyo kuphela, ngokwesiqhelo ukuba ibhola yenza ingxolo ebangelwa kukunganeli kwamandla epompo okanye isando samanzi.
