H71 Check Valve: Good Quality but LOW price Size: 1/2"- 8" Also do OEM service. Short delivery time, welcome your inquiry... Wenzhou Huajin Valve Co.,ltd. Product Pictures:Wafer lift check valve1 The use of standard:H71H/Y/W2 Usage and features: connection with wafer H71 check valve, compact disc along the center position for take-off and landing exercise, because the disc off tour short, and ...