le valve yakhe yokungena ikhiqizwa ngokuqinile ngokwezimfuneko ze-GB, ithatha umzimba we-WCB carbon steel casting ongenamaphutha onesikhala sokuphuma & yoke ephakeme. I-stem ye-valve evulekile ingabonisa kahle isimo sokuvula nokuvala kwe-valve. I-wedge metal hard sealing structure iqinisekisa umphumela wokuvikela othembekile ngaphansi kwengcindezi ejwayelekile, ihambisana nemodi yokushayela ye-handwheel yokulawula ukuvulwa okuphelele nokuvulwa okuphelele kokuphuma komjikelezo.