Guoyang Valve (GY Balls) specialized in the manufacturing and export of various stainless steel valve balls, size range DN8 ~ DN400mm (1/4"~ 16"). The main products have valve ball, ball valve ball, trunnion valve ball, hollow valve ball, solid valve ball, trunnion balls, three-way balls (L and T port), V port balls, balls with stem, valve stems and seats, which are suitable to various ball valve designs and applications, especially in plumbing, heating, refrigeration, chemical, oil & gas, etc.