... LF2 etc. Pressure:150Lb-600Lb SpecificationsForged Check Valve 1.CE,ISO9001,API6D,CQC,PDO 2.Forged Check ... Valve Size 1/4"~2" 3.Class ... F316; F316L; F321; LF2 etc.Forged Check valve: SpecificationsCast Steel Ball Valve 1.Design:BS5351,ANSI B16.34,API6D 2 ... .Pressure:150-600LB 3.Size:1/2"-12" 4.Floating BallCast Steel Ball ...