Kungani ukhethe ama-valve esango?

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1. Ukumelana nokugeleza okuphansi kanye ne-coefficient yokumelana nokugeleza okuphansi

Uma i-valve yesango ivuliwe ngokugcwele, isiteshi somzimba we-valve siyafana nobubanzi bangaphakathi bepayipi, futhi amanzi angadlula cishe emgqeni oqondile ngaphandle kokushintsha indlela yokugeleza. Ngakho-ke, ukumelana kwayo nokugeleza kuncane kakhulu (ikakhulukazi kusukela emaphethelweni epuleti le-valve), futhi ukulahleka kwamandla kuncane, okwenza kube kuhle kakhulu ezinhlelweni ezinezidingo eziqinile zokwehla kwengcindezi.

2. I-torque yokuvula nokuvala incane kakhulu, futhi ukusebenza kulula kakhulu.

Njengoba indlela yokunyakaza kwepuleti lesango iqonde ngqo endleleni yokugeleza kwamanzi, ngesikhathi senqubo yokuvula nokuvala, amandla asetshenziswa yingcindezi yamanzi epuletini lesango ahambisana ne-axis yesiqu se-valve. Lokhu kuphumela ku-torque encane noma ukusunduza okudingekayo ukuze kusebenze (ikakhulukazi kumapuleti esango ahambisanayo), okwenza kube lula ukusebenza ngesandla noma ukuvumela ukusetshenziswa kwe-actuator enamandla aphansi.

3. Ukugeleza kwe-Bidirectional, akukho mingcele yokufaka isiqondiso

Indlela yokudlula kwevalvu yevalvu yesango ivame ukwakheka ngokulinganayo, okuvumela amanzi ukuthi ageleze evela kunoma yiluphi uhlangothi. Lesi sici sisho ukuthi ukufakwa akudingeki kucabangele indlela yokugeleza kwe-medium, okunikeza ukwakheka okuguquguqukayo futhi kufanelekile kumapayipi lapho indlela yokugeleza ingashintsha khona.

4. Ukuguguleka okuncane kwendawo yokuvala uma ivuliwe ngokuphelele

Uma ivalvu ivuliwe ngokuphelele, isango liphakanyiswa ngokuphelele liye engxenyeni engenhla yesikhala sevalvu futhi lihlukaniswe nendlela yokugeleza. Ngakho-ke, ukugeleza kwamanzi akuguguli ngokuqondile indawo yokuvala, ngaleyo ndlela kwandise impilo yenkonzo yendawo yokuvala.

5. Ubude besakhiwo obufushane kakhulu

Uma kuqhathaniswa nezinhlobo ezithile zamavalvu (njenge-globe valve), amavalvu esango anobude obufushane besakhiwo, okuwanikeza inzuzo ezimweni lapho isikhala sokufaka silinganiselwe.

6. Ububanzi bokusebenza okuphakathi

Izinto ezahlukene kanye nezinhlobo zokuvala zingakhethwa ngokuya ngezimo zokusebenza ezahlukene. Ifanelekela imidiya ehlukahlukene efana namanzi, uwoyela, umusi, igesi, ngisho nezinhlayiya eziqukethe udaka. Ngaphambi kokuba kusungulwe ivalvu yebhola kanye nevalvu yebhabhathane, ivalvu yesango yayiyisinqumo esiyinhloko sevalvu yezitshalo zamanzi, izitshalo zikagesi kanye namabhizinisi amakhemikhali. Ngenxa yobubanzi obukhulu bepayipi elivulekile kanye nendawo eyanele yokufaka eqondile, yayisetshenziswa kakhulu kumapayipi amakhulu ayengasebenzi njalo.