Tlhahlobo ea Kopo le Molemo oaLi-valve tsa Butterfly tsa Middle Line tse nang le Khokahano ea Flange naheng ea China
TheFlange ea Sechaena e hokahaneng le belofo ea serurubele se bohareng ke sesebelisoa se sebelisoang hangata bakeng sa ho laola phallo le khatello ea mokelikeli. Tlhahisong ea indasteri, li-valve tsa serurubele sa li-flange tse amanang le centerline li sebelisoa haholo libakeng tse sa tšoaneng, tse kang lik'hemik'hale, peterole, meriana, joalo-joalo Sehlooho sena se tla hlahloba ts'ebeliso le melemo ea li-valve tsa lirurubele tse amanang le midline Chaena.