Check-Flex G3-C Duckbill Check Valve

Duckbill valve for concrete pipe

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Vulcanised and reinforced like a tyre for durability

Flexible and wide seal

Flange drilling to match any mating flange

Sizes to fit all pipes

Encapsulated metal with strong single piece design for marine diffuser applications

Nominal Pipe Size

Check-Flex G3-C0450
ID: 570-590mm
L: 945mm
H: 828mm
W: 200mm
Check-Flex G3-C0525
ID: 670-690mm
L: 1106mm
H: 964mm
W: 200mm
Check-Flex G3-C0600
ID: 770-790mm
L: 1198mm
H: 1151mm
W: 200mm
ICheck-Flex G3-C0675
ID: 810-850mm
L: 1334mm
H: 1254mm
W: 250mm
Check-Flex G3-C0750
ID: 910-940mm
L: 1334mm
H: 1254mm
W: 250mm
Check-Flex G3-C0900
ID: 1040-1090mm
L: 1619mm
H: 1512mm
W: 250mm
Check-Flex G3-C1050
ID: 1230-1280mm
L: 1720mm
H: 1725mm
W: 300mm
Check-Flex G3-C1200
ID: 1440-1490mm
L: 1910mm
H: 1935mm
W: 300mm
Check-Flex G3-C1350
ID: 1540-1590mm
L: 2060mm
H: 2140mm
W: 300mm
Check-Flex G3-C1500
ID: 1740-1790mm
L: 2239mm
H: 2170mm
W: 300mm
Table displaying model, style, pipe size range, and pipe connection options for various products.

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ModelStylePipe Size RangePipe Connection
-S-C-W-F / -Fi / -Fd-G
G5Inline Fabricated80–3000mm----
G5MInline Moulded100–150mm-
G5-RESIInline EN13564-180–200mm-
G4Duckbill Fabricated100–2400mm-----
G3Duckbill Fabricated100–2400mm-----
G3MDuckbill Moulded100–150mm-
G2Inline Duckbill Fabricated50–300mm-