I-valve yebhola imikhiqizo yavela ku-valve yeqhude, i-valve yebhola iyindilinga yonke njengezingxenye ezivula nokuvala i-valve (i-spool), isebenzisa i-sphere ezungeze i-axis ye-valve stem rotation 90 degrees ukufeza inhloso yokuvula nokuvala i-valve. I-valve yebhola isetshenziselwa kakhulu ukusika, ukusabalalisa kanye nokushintsha isiqondiso sokugeleza okuphakathi epayipini. I-valve yebhola ene-spool evulekile emise okwe-V nayo inomsebenzi omuhle wokulawula ukugeleza.
Ama-valve ebhola awalula nje kuphela ngesakhiwo kanye nokusebenza kahle kokuvala, kodwa futhi mancane ngosayizi, alula ngesisindo, asetshenziswa kancane ezintweni ezingavuthiwe, amancane ngosayizi wokufaka, amancane ngesikhathi sokushayela, alula ekusebenzeni futhi kulula ukubona ukuvulwa ngokushesha futhi ukuvala. Zingenye yezinhlobo zama-valve ezikhula ngokushesha emashumini eminyaka amuva nje. Ukusetshenziswa kwama-valve ebhola kubanzi kakhulu. Izinhlobonhlobo kanye nenani lama-valve ebhola asakhula. Zithuthuka zibheke izinga lokushisa eliphezulu, umfutho ophakeme, indawo ephansi ye-orifice enkulu, ukuvaleleka okuphezulu, impilo ende yesevisi, ukusebenza okuhle kakhulu kokulawula kanye nemisebenzi eminingi. Ukuthembeka kwazo nezinye izinkomba zokusebenza sezifinyelele izinga eliphezulu, futhi ziye zashintsha kancane ukusetshenziswa kwama-valve esango, ama-globe valves nama-throttle valves. Ngokuthuthuka okuqhubekayo kobuchwepheshe be-valve yebhola, izosetshenziswa kabanzi esikhathini esifushane esibonakalayo, ikakhulukazi emapayipini kawoyela negesi, amayunithi okucwenga uwoyela kanye nemboni yenuzi. Ngaphezu kwalokho, kwezinye izimboni zezinkundla ezinkulu nezimaphakathi, izinkundla zokucindezela okuphakathi nendawo neziphansi, ama-valve amabhola nawo azoba enye yezinhlobo zamavalvu ezivelele.