Ivalvu yokumisa yivalvu yebhloko, edlala indima enkulu ekunqumleni umbhobho.
Iivalvu yeglobhuyeyona valve isetyenziswa kakhulu, kwaye ikwayeyona ndlela ifanelekileyo yokuqhobosha. Ngenxa yokuba isebenza kakuhle ekulungiseni, kwaye xa ithelekiswa nezinye iintlobo zevalvu zesakhiwo, ukusasazwa kokuguguleka okujikeleze isihlalo sevalvu yokumisa ngenxa yokukhukuliseka kuyafana ngakumbi.
Ivalvu yeglobhu yivalvu evalwayo ngokunyanzeliswa. Ke ngoko, indlela yokukhetha ngokuchanekileyo ivalvu yeglobhu kufuneka ifake uxinzelelo kwi-wide flap xa ivaliwe, ukuze kungabikho kuvuza phakathi kwemiphezulu emibini yokuvalela. Ekubeni amandla okuvalela evalvu yeglobhu kunye noxinzelelo oluphakathi zikwi-axis enye, kwaye imiyalelo ichasene, amandla okuvalela awakwazi nje ukwandiswa, kodwa akwayoyisa uxinzelelo lwe-medium, ngoko ke amandla okuvalela afunekayo yivalvu yeglobhu makhulu kakhulu kunalawo evalvu yesango.
Ingqwalasela ekhethekileyo kufuneka inikwe ekukhetheni ivalvu yeglobe. Ivalvu yeglobe eneringi yokutywina ethe tyaba ayinakusetyenziswa kwimidiya engcolileyo okanye kwimidiya equlethe amasuntswana aqinileyo. Kule medium, kulungele ngakumbi ukusebenzisa umphezulu wokutywina onciphileyo ukutywina.
Ngokubanzi, iivalvu ezisikiweyo ziyacetyiswa kwiinkqubo zemibhobho ezithintela umoya, ezilawulayo, kunye nezoxinzelelo oluphezulu; iivalvu ezisikiweyo zinokukhethwa ukuze zilungelelaniswe kwiindawo ezimbini, iimfuno zokukhanya kunye nezakhiwo ezincinci, akukho mfuneko ingqongqo kubude besakhiwo, ukunqunyulwa koxinzelelo oluphantsi (umahluko omncinci woxinzelelo), kunye nemidiya yobushushu obuphezulu. ; Kwidaka, i-medium equlethe amasuntswana omzimba ofanayo, ukumelana nokuguguleka, ukuncitshiswa kobubanzi, isenzo esikhawulezayo (ukujika okuninzi okanye ukuvula nokuvala), kunye namandla aphantsi okusebenza, zama ukungakhethi ivalvu yokumisa; xa ifuna ukusebenza kakuhle kokutywina, ukunqunyulwa koxinzelelo oluphezulu (umahluko omkhulu woxinzelelo)), ingxolo ephantsi, ukuxinana kunye nokufuma, ukuvuza okuncinci emoyeni, imidiya erhabaxa, ubushushu obuphantsi kunye nokubanda okunzulu, ungasebenzisa uyilo olukhethekileyo lwevalvu yehlabathi.
Olunye uphawu olubalulekileyo lwevalvu yeglobhu kukuba isitywino sesiqu sevalvu sinokuthathelwa indawo yibellows endaweni yokuyipakisha ukuze yenze ivalvu yeglovu yebellows. Ivalvu yeglovu yebellows ifanelekile kwimidiya etshayo, eqhumayo, enetyhefu, necocekileyo, kwaye inokuhlangabezana neemfuno zenkqubo ye-vacuum.
Nangona kunjalo, ivalvu yeglobe nayo ineziphene zayo, ikakhulu ezibangelwa yimo yangaphakathi yomzimba wevalvu. Kwindawo yomzimba wevalvu yeglobe, i-medium itshintsha ukusuka kwindlela ethe tye ethe tye ukuya kwindlela ethe tye enyukayo okanye ezantsi, ize emva koko ibe yindlela ethe tye, nto leyo ebangela ukulahleka koxinzelelo, ingakumbi kwizixhobo ze-hydraulic. Olu hlobo lokulahlekelwa koxinzelelo kufuneka lutsale ingqalelo eyaneleyo.