Sekuyiminyaka engaphezu kwengama-50 kwethulwa ivalve yevemvane eyi-triple eccentric, futhi iye yathuthukiswa ngokuqhubekayo kule minyaka engu-50 edlule.Ukusetshenziswa kwamavalvu ovemvane kuye kwahlanganisa izimboni eziningi.I-valve yovemvane yasekuqaleni isetshenziselwa kuphela ukucabela nokuxhuma imidiya yamanzi.I-eccentric design kathathu ithuthukisa umsebenzi we-valve uvemvane.Ibe yinye yama-valve asebenza kahle kakhulu ngaphansi kwezimo ezinzima kakhulu endaweni yenqubo ebucayi emishinini yamapayipi ezimbonini.

Njengoba igama liphakamisa, ama-offsets amathathu azimele aklanywe njengama-valve.I-eccentricity kathathu isho ukuthi:

• I-Offset 1

I-shaft ibekwe ngemuva kwendiza yendawo yokuvala ukuze inikeze indlela yokuhlala eqhubekayo.

• I-Offset 2

I-shaft ibekwe ohlangothini olulodwa lwepayipi / i-valve centerline ukuze kuqedwe ukungqubuzana phakathi kophawu nesihlalo

• I-Offset 3

Izihlalo kanye ne-central cone cone zithambekele maqondana nepayipi/valve centerline.Le offset yesithathu iqeda ngokuphelele ukuhlikihla.Le engeli yekhoni, kanye nama-eccentric shaft offsets, ivumela i-disc ukuthi ivale isihlalo ngaphandle kokungqubuzana.

Lo mklamo wesihlalo uphinde uvumele ukuvalwa okufanayo, futhi ngaleyo ndlela kuvaleke ngokuqinile ekwakhiweni kwesihlalo sensimbi.Lo mklamo uyindleko ephansi, inketho yetorque ephansi (elula ukuzenzela), kunesinye isitayela sensimbi ehlezi amavalvu.

Ama-offsets amathathu ngokuvamile asetshenziswa ezinhlelweni ze-ike high pressure steam (ngaphezulu kuka-150 PSI), isitimu esishisa kakhulu, amagesi okushisa aphezulu namafutha, izinhlelo zokushisa eziphakeme zilungele lolu hlobo lwevalvu ngoba isihlalo sensimbi siyadingeka phezu kwesihlalo esithambile.