QingDao HY Valves company is a professional fluid equipment and valve manufacturer ,we export many kinds of equipments and valves to many countries , our clients cover Asia, Europe , America , and Africa . our products are widely used in shipyard ,port, heating system, gas and liquid transportation system, chemical plant an so on. We also provide pipes, flanges and other accessories to meet the various demands of clients.Our products cover different kinds such as butterfly valve, ball valve, JIS marine valve, industrial valve , couplings , expansion joints and so on. According to the  material  there are different kinds of  cast iron ,cast steel , ductile iron, bronze, stainless steel .We can manufacture the valves and equipments  as per different standard (DIN, JIS, BS , ANSI). especially the butterfly valve is our main product . we can provide three kinds (double-flanged ,lug- and wafer-type ) . each kind has different structure category (concentric , eccentric , double-eccentric triple-eccentric ). if you want to get more information about butterfly valve , please e-mail to me……read more