Duplex Swing Check Valve Supplier in Qatar Middleeast valve is one the best Duplex Swing Check Valve Supplier in Qatar. Body materials: Cast steel (A216 WCB, WCC, LCB, LCC, WC6, WC9), Ductile iron, Stainless Steel [SS316, SS304, SS316L, SS904L, CF8, CF8M, F304, F316, F31L, F51, F3, F55, F91] Duplex Steel (F51,F53,5A,4A,6A), Aluminium bronze, cast Iron and ductile Iron. Class: 150 to 2500, PN10 to PN450. Size: 1/2” to 48”. End: Flanged, Socket weld butt weld, wafer,lug, threaded. https://www.middleeastvalve.com/product-category/duplex-swing-check-valve/