Product Type: Check ValveProduct Name:Flange Check ValveProduct Details:Place of Origin:?ChinaCertification:?ISO9001-CEProduct DescriptionFlanged Type Check Valves are for pressurized pipeline applications?where it is inserted between pipe flanges. Cla-Val Series DBI Duckbill?In-Line Flanged Style Check Valves have an integral rubber flange for?attaching directly between flanged-end pipe connections. A variety of?elastomers allow DBI valves to be used with many fluids. When ordering,specify Model DBI, pipe ID size, flange drilling, and add first letter of?elastomer material. IE: 4"-DBI-N (N for Neoprene).