1.RWB-CVA series Brass Check Valve 2.the connection size:5/8",3/4",7/8",1",1-1/8"1-3/8",1-5/8",2-1/8" 3.High quality,low price 1.RWB-CVA series Brass Check Valve 2.the connection size:5/8",3/4",7/8",1",1-1/8"1-3/8",1-5/8",2-1/8" 3.we respect deliver time4.We supply best price and high quality products Refrigeration Check Vlave