Emebere valvụ nru ububa WCB atọ maka ngwa dị oke mkpa ebe ịdịte aka, nchekwa na akara ntapu efu dị mkpa. A na-eme ahụ valvụ ahụ nke WCB (ihe nkedo carbon steel) na mkpuchi metal-to-metal, nke dabara adaba maka gburugburu ebe siri ike dị ka nrụgide dị elu na sistemu okpomọkụ. Eji ya mee iheMmanụ & Gas,Mmepụta ike,Nhazi kemịkalụ,Ọgwụgwọ mmiri,Mmiri & Offshore naPulp & Akwụkwọ.