This collection gathers ductile-iron check valves: flanged swing bodies, including lever-and-weight versions, and double-door wafer bodies, in larger sizes from 2 in. to 16 in. Certain models carry a manufacturer-listed AWWA C508 or UL/FM designation; those designations apply only to the individual products that state them, not to the whole collection. Where a designation is required for a project, confirm the specific SKU's documentation.
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8 in. Ductile Iron Swing Check Valve, Flanged — UL/FM -
6 in. Ductile Iron Swing Check Valve, Flanged — UL/FM -
4 in. Ductile Iron Swing Check Valve, Flanged — UL/FM -
3 in. Ductile Iron Swing Check Valve, Flanged — UL/FM -
2-1/2 in. Ductile Iron Double Door Wafer Check Valve -
16 in. Ductile Iron Double Door Wafer Check Valve -
10 in. Ductile Iron Double Door Wafer Check Valve -
8 in. Ductile Iron Double Door Wafer Check Valve -
6 in. Ductile Iron Double Door Wafer Check Valve -
5 in. Ductile Iron Double Door Wafer Check Valve -
4 in. Ductile Iron Double Door Wafer Check Valve -
3 in. Ductile Iron Double Door Wafer Check Valve -
2 in. Ductile Iron Double Door Wafer Check Valve -
6 in. Ductile Iron Double Door Wafer Check Valve, UL/FM -
4 in. Ductile Iron Double Door Wafer Check Valve, UL/FM -
8 in. Ductile Iron Swing Check Valve, Lever & Weight — AWWA C508 -
6 in. Ductile Iron Swing Check Valve, Lever & Weight — AWWA C508 -
4 in. Ductile Iron Swing Check Valve, Lever & Weight — AWWA C508 -
3 in. Ductile Iron Swing Check Valve, Lever & Weight — AWWA C508 -
10 in. Ductile Iron Swing Check Valve, Flanged — AWWA C508 -
8 in. Ductile Iron Swing Check Valve, Flanged — AWWA C508 -
6 in. Ductile Iron Swing Check Valve, Flanged — AWWA C508 -
4 in. Ductile Iron Swing Check Valve, Flanged — AWWA C508 -
3 in. Ductile Iron Swing Check Valve, Flanged — AWWA C508
What is grouped here
The group includes ductile-iron flanged swing checks (with AWWA C508 and UL/FM manufacturer-listed on specific models), lever-and-weight swing checks, and ductile-iron double-door wafer checks that bolt between flanges. For wafer bodies on their own, see wafer check valves; for smaller swing checks, see swing check valves.
Choosing a ductile-iron check valve
The AWWA C508 page covers the waterworks swing series, and the check valve types guide explains how flanged swing and double-door wafer bodies differ. Confirm size, connection, and flange fit against the product specification.