Sele ingaphezulu kweminyaka engama-50 okoko kwaziswa ivalve yebhabhathane ephindwe kathathu, kwaye ibisoloko iphuhliswa kule minyaka ingama-50 idlulileyo.Ukusetyenziswa kweevalvu zebhabhathane kuye kwachaphazela amashishini amaninzi.Ivalve yebhabhathane yentsusa isetyenziselwa kuphela ukungenelela kunye nokudibanisa imidiya yamanzi.Uyilo lwe-eccentric kathathu luphucula umsebenzi wevalve yebhabhathane.Ibe yenye yeevalvu ezinomsebenzi ogqwesileyo phantsi kweemeko ezinzima kakhulu kwimeko yenkqubo ebalulekileyo kwizixhobo zemibhobho yoshishino.

Njengoko igama libonisa, ii-offsets ezintathu ezizimeleyo ziyilwe njengeevalvu.I-eccentricity kathathu ithetha:

• I-Offset 1

I-shaft ibekwe emva kwendiza yendawo yokutywina ukubonelela indlela yokuhlala eqhubekayo.

• I-Offset 2

I-shaft ibekwe kwicala elinye lombhobho / i-valve centerline ukuphelisa ukungqubuzana phakathi kwesitywina kunye nesihlalo

• I-Offset 3

Isihlalo kunye ne-cone cone centerlines zithambekele ngokubhekiselele kumbhobho / i-valve centerline.Le nto yesithathu isusa ngokupheleleyo ukukhuhla.Le engile yekhowuni, kunye nee-eccentric shaft offsets, ivumela idiski ukuba ivale isihlalo ngaphandle kokukhuhlana.

Olu yilo lwesitulo lukwavumela ukutywinwa okufanayo, kwaye ngaloo ndlela ukuvalwa okuqinileyo kuyilo lwesitulo sesinyithi.Olu luyilo luxabiso eliphantsi, ukhetho lwetorque esezantsi (kulula ukuzenzela), kunesinye isimbo sentsimbi ehleli iivalvu.

Uhlaselo oluphindwe kathathu lusetyenziswa ngokubanzi kwizicelo ze-ike high pressure steam (ngaphezulu kwe-150 PSI), i-superheated- umphunga, iigesi zobushushu obuphezulu kunye ne-oyile, izicelo zobushushu obuphezulu zilungile kolu hlobo lwesivalo kuba isihlalo sentsimbi siyafuneka phezu kwesitulo esithambileyo.