Ivalvu yebhola elineflange eliyisiteji esiphakeme esijwayelekile saseMelika ngokujikeleza ibhola ukuze kufezeke ukuvulwa nokuvalwa kwesithambisi. Lapho ibhola lijikeleza ngo-90 degrees, isiteshi sokugeleza kwesithambisi sivulwa ngokuphelele noma sivalwa. Ngoba indawo yokubopha yevalvu yebhola imile endaweni yokugeleza kwesithambisi, inokumelana nokugeleza okuncane nokusebenza okuphezulu kokubopha.
Izici zesakhiwo
Idizayini yepulatifomu ephezulu: Ingxenye yomzimba wevalvu yamavalvu ebholayo enezimbobo ezisepulatifomu ephezulu yakhelwe ngokuvamile ipulatifomu ephezulu ukuze kube lula ukufaka nokukhipha ama-actuator (njengamadivayisi e-pneumatic, kagesi) noma izibambo zokuphatha ngesandla.
Ukuxhumana kwe-flange: Zombili iziphetho zomzimba wevalvu zixhunywa nge-flange, elula ukuyixhuma nezinye izinto ze-flange ohlelweni lwe-pipeline futhi inokusebenza okuvikelekile kokubopha.
Isakhiwo sebhola elintantayo: Ibhola elingaphakathi kivalvu yebhola lenziwe ngokuzungeza, futhi ibhola licindezelwa ngokuqinile endaweni yokubopha yesihlalo ngaphansi kwesenzo sokucindezela kwesithambisi ukuqinisekisa umphumela omuhle wokubopha.
Izinto zokubopha: Isihlalo nebholana ngokuvamile zenziwe ngensimbi engagqwali, i-PTFE noma ezinye izinto ezimelana nokugqwala ukuze zivumelane nezidingo zezithambisi ezahlukene.
