Udi mmiri zuru oke nwere valvụ nchekwa lever

A28H-10C, A28Y-10P, A28Y-16P, A28Y-25P, A28Y- 40P

A28Y-16C, A28Y-16R, A28Y-25R, A28Y-40R

A na-eji ụdị A28H maka akụrụngwa na pipeline nke ikuku, N₂,H₂agwakọta gas vepo etc. ọkara ihe na-arụ ọrụ okpomọkụ na-erughị 200 ℃.A28Y-P/10R₈ụdị na-eji ngwá na pipeline nke àgwà na corrode ọkara ihe na-arụ ọrụ okpomọkụ na-erughị 200 ℃. Were maka mmezi nrụgide nchebe ngwaọrụ.