Isibonelo sokuqala esifana ne-i-valve yebholaiyivalvu egunyazwe uJohn Warren ngo-1871. Ivalvu ehlezi eyinsimbi enebhola lethusi nesihlalo sethusi. Ekugcineni u-Warren wanikeza ilungelo lakhe lobunikazi bomklamo we-valve yebhola lethusi ku-John Chapman, inhloko ye-Chapman Valve Company. Kungakhathaliseki ukuthi yisiphi isizathu, u-Chapman akazange afake umklamo kaWarren ekukhiqizeni. Esikhundleni salokho, yena nabanye abakhiqizi be-valve bebelokhu besebenzisa imiklamo emidala iminyaka eminingi.

Ama-valve ebhola, awaziwa nangokuthi ama-ball cock valves, agcina ebambe iqhaza phakathi neMpi Yezwe II. Ngalesi sikhathi, onjiniyela bayithuthukisa ukuze isetshenziswe ezinhlelweni zikaphethiloli zezindiza zempi. Ngemva kwempumelelo yeama-valve ebholaeMpini Yezwe II, onjiniyela bafaka ama-valve ebhola emisebenzini yezimboni.

Okunye okubaluleke kakhulu okuhlobene nama-valve ebhola ngeminyaka yawo-1950 kwaba ukuthuthukiswa kwe-Teflon kanye nokusetshenziswa kwayo okwalandela njengempahla ye-valve yebhola. Ngemva kokuthuthukiswa ngempumelelo kweTeflon, amabhizinisi amaningi afana neDuPont alwela ilungelo lokuyisebenzisa, ngoba ayazi ukuthi iTeflon ingaletha izinzuzo ezinkulu zemakethe. Ekugcineni, inkampani engaphezu kweyodwa yakwazi ukwenza ama-valve e-Teflon. Ama-valve ebhola e-Teflon ayavumelana nezimo futhi angakha izimpawu ezinhle ezinhlangothini ezimbili. Ngamanye amazwi, i-bidirectional. Abuye abe nobufakazi bokuvuza. Ngo-1958, u-Howard Freeman wayengumkhiqizi wokuqala owaklama i-valve yebhola enesihlalo se-Teflon esiguquguqukayo, futhi umklamo wakhe wawunelungelo lobunikazi.

Namuhla, ama-valve ebhola akhiwe ngezindlela eziningi, okuhlanganisa ukuhambisana kwawo okubonakalayo kanye nokusetshenziswa okungenzeka. Ngaphezu kwalokho, bangasebenzisa i-CNC machining kanye nezinhlelo zekhompyutha (ezifana nemodeli yenkinobho) ukwenza ama-valve angcono kakhulu. Maduzane, abakhiqizi be-valve yebhola bazokwazi ukuhlinzeka ngezinketho eziningi zemikhiqizo yabo, okuhlanganisa ukwakhiwa kwe-aluminium, ukuguga okuncane kanye nekhono elikhulu lokudonsa, okuvumela opharetha ukuba badlulise inani eliguquguqukayo loketshezi ngevalvu ngesilinganiso sokugeleza esilinganiselwe.

isicelo

Umgomo we-valve yebhola ukulawula ukugeleza koketshezi. Lokhu bangakwenza ngezindlela eziningi. Bangakwazi ukulungisa izinhlobo ezithile zama-valve okugeleza okuphansi, banikeze ukuvinjelwa kokubuyela emuva kwama-valve anezilinganiso zokuhlola ukujika, bahlukanise uhlelo, futhi banikeze ukuvalwa okuphelele kwabaqhubi bamagiya.

Ngenxa yokuthi angalawulwa ngesandla noma ngogesi, ama-valve ebhola angasebenzisa izinhlelo zokusebenza ngezilungiselelo ezihlukahlukene.

Ezimweni eziningi, ama-valve amabhola asetshenziselwa ukuvula nokuvala amapayipi aqukethe izinto eziqinile ezimisiwe, ama-slurries, uketshezi noma amagesi. Ezinye izinhlelo zokusebenza lapho ama-valve ebhola evame ukusetshenziswa khona zihlanganisa izinhlelo zamapayipi, izinto zokusebenza, namathuluzi cishe kuzo zonke izimboni ezithutha uketshezi. Ungawathola noma yikuphi kusukela phansi kwefekthri kuya kumpompi ekhaya lakho. Izimboni ezisebenzisayoama-valve ebholazihlanganisa ukukhiqiza, izimayini, uwoyela negesi, ezolimo, ukushisisa nokupholisa, amapayipi ezimbonini nawendlu, amanzi, izimpahla zabathengi, ukwakhiwa, njll.