... 2.Forged Check Valve Size 1/4"~2" 3.Class 800~1500LB A105,F5,F9,F11,F316,LF2Forged Check ValveApplication standards ... " Material:304(CF8,1.4301)/ 316(CF8M,1.4408) Pressure:800-2000PSI Medium:water,oil,gStar Points:Grade: 200series,300seri es ...