Ivalvu yokusika isetyenziswa kakhulu ukusika okanye ukudibanisa umsinga ophakathi.iivalvu zesango, iivalvu zeglobhu, iivalvu zediaphragm,iivalvu zebhola, iivalvu zeplagi,iivalvu zebhabhathane, iivalvu ze-plunger, iivalvu ze-ball plug, iivalvu zesixhobo sohlobo lwenaliti, njl.

Iivalvu ezilawulayo zisetyenziswa kakhulu ukulungisa ukuhamba kunye noxinzelelo lwesixhobo. Kubandakanya ivalvu elawulayo, ivalvu yokuthomalalisa, ivalvu yokunciphisa uxinzelelo, njl.

Iivalvu zokukhangela zisetyenziselwa ukuthintela ukuba i-medium ingabuyeli umva. Ibandakanya iivalvu zokujonga zezakhiwo ezahlukeneyo.

Iivalvu ze-shunt zisetyenziselwa ukwahlula, ukusasaza okanye ukuxuba imidiya. Kubandakanya izakhiwo ezahlukeneyo zeevalvu zokusasaza kunye neetraphu, njl.

Iivalvu zokhuseleko zisetyenziselwa ukhuseleko xa isixhobo sixinezelekile kakhulu. Kubandakanya iintlobo ngeentlobo zeevalvu zokhuseleko.

Ihlelwe ngokweeparameter eziphambili

(1) Ihlulwe ngokwengcinezelo

Ivalvu enoxinzelelo olusebenzayo oluphantsi kunoxinzelelo oluqhelekileyo lomoya.

Ivalvu yoxinzelelo oluphantsi yivalvu ene-PN yoxinzelelo oluqhelekileyo engaphantsi kwe-1.6MPa.

Uxinzelelo oluqhelekileyo lwevalvu yoxinzelelo oluphakathi yiPN2.5~6.4MPa.

Ivalvu yoxinzelelo oluphezulu inoxinzelelo oluqhelekileyo lwe-PN10.0 ~ 80.0MPa.

Ivalvu yoxinzelelo oluphezulu kakhulu yivalvu ene-PN yoxinzelelo oluqhelekileyo engaphezulu kwe-100MPa.

(2) Ihlulwe ngokobushushu obuphakathi

Ivalvu yobushushu obuphezulu t ingaphezulu kwe-450C.

Ivalvu yobushushu obuphakathi eyi-120C ingaphantsi kunevalvu ene-t engaphantsi kwe-450C.

Ivalvu yobushushu eqhelekileyo -40C ingaphantsi kwe-t ngaphantsi kwe-120C.

Ivalvu yobushushu obuphantsi -100C ingaphantsi kune-t ingaphantsi kune-40C.

Ivalvu yobushushu obuphantsi kakhulu t ingaphantsi kwe -100C.

(3) Uhlu ngokwezixhobo zomzimba wevalvu

Iivalvu zezinto ezingezizo ezesinyithi: ezifana neevalvu zeseramikhi, iivalvu zentsimbi yeglasi, iivalvu zeplastiki.

Iivalvu zezinto zesinyithi: ezinje ngeevalvu ze-alloy ze-copper, iivalvu ze-aluminium alloy, iivalvu ze-alloy ze-lead, iivalvu ze-titanium alloy, iivalvu ze-Monel alloy

Iivalvu zesinyithi eziphosiweyo, iivalvu zesinyithi sekhabhoni, iivalvu zesinyithi eziphosiweyo, iivalvu zesinyithi eziphantsi kwe-alloy, iivalvu zesinyithi eziphantsi kwe-alloy.

Iivalvu zentsimbi ezifakwe umphezulu womzimba: ezifana neevalvu ezineeleya, iivalvu ezineplastiki, kunye neevalvu ezineeleya.

I-taxonomy ngokubanzi

Le ndlela yokuhlela yahlulwe ngokwemigaqo, umsebenzi kunye nolwakhiwo, kwaye okwangoku yeyona ndlela isetyenziswa kakhulu kumazwe ngamazwe nasekhaya yokuhlela. Ivalvu yesango eliqhelekileyo, ivalvu yeglobe, ivalvu yethrottle, ivalvu yesixhobo, ivalvu yeplunger, ivalvu yediaphragm, ivalvu yeplagi, ivalvu yebhola, ivalvu yebhabhathane, ivalvu yokujonga, ivalvu yokunciphisa uxinzelelo, ivalvu yokhuseleko, itrap, ivalvu yokulawula, ivalvu yeenyawo, isihluzi, ivalvu yeBlowdown, njl.