JIS F7371 bronze swing check valves 5K 50A JIS F7371 5K Marine Bronze Swing Check Valve JIS F7371 Marine Swing Check Valve 5K Swing check valve JIS Marine Brass F7371 5K-20A Swing Check Valve JIS Marine Brass F7371 5K-32A Swing Check Valve Marine Bronze Swing Check Valve JIS F7371 5K (DN50-DN80) Marine Bronze Swing Check Valve JIS F7371 5K for sale JIS 5K 50MM swing check valve F7371 JIS F7371 5K40 Bronze Swing Check Valve with good price JIS Marine Brass F7371 5K-50A Swing Check Valve Check Valve Swing check valve Bronze swing check valve JIS F7371 dn50-80 Standard Materials body               bc6 bonnet bc6 seat bc6 disc bc6 gasket non-asbestos DN d L D C NO. h t H 5K50 50 190 130 105 4 15 16 97 5K65 65 220 155 130 4 15 18 119 5K80 80 250 180 145 4 19 18 129 Technical servicing: Available Specification of JIS F7371 check valve Nominal Pressure: 5K Nominal Diameter: DN15-DN80 Standard: JIS F7371 Actuation ways: Automatic and pneumatic, the main role is to prevent the backflow medium Medium: Fresh water, sea water, air, oil, steam etc