Check-Flex G3M-S Duckbill Check Valve

Small Duckbill valves for AHU and Mixing applications

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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 G3M-S0025
ID: 15-25mm
L: 77mm
H: 50mm
W: 25mm
Check-Flex G3M-S0030
ID: 26-34mm
L: 117mm
H: 64mm
W: 32mm
Check-Flex G3M-S0050
ID: 42-50mm
L: 145mm
H: 89mm
W: 38mm

Check-Flex G3M-S0050C Compact Curved Bill
ID: 41-50mm
L: 105mm
H: 80mm
W: 35mm
Check-Flex G3M-S0060
ID: 51-63mm
L: 170mm
H: 115mm
W: 40mm

Check-Flex G3M-S0060C Compact Curved Bill
ID: 51-60mm
L: 115mm
H: 97mm
W: 35mm
Check-Flex G3M-S0090
ID: 82-93mm
L: 190mm
H: 152mm
W: 40mm
Check-Flex G3M-S0100
ID: 100-112mm
L: 250mm
H: 180mm
W: 50mm
Check-Flex G3M-S0150
ID: 155-165mm
L: 300mm
H: 250mm
W: 50mm
ID: 100
OD: 220
L: 270
H: 225
BCD PN6: Ø170 4x M16
BCD PN10: Ø180 8x M16
BCD PN16: Ø180 8x M16

Model: G4-DN100
ID: 100
OD: 220
L: 270
H: 225
BCD PN6: Ø170 4x M16
BCD PN10: Ø180 8x M16
BCD PN16: Ø180 8x M16

Model: G4-DN100
ID: 100
OD: 220
L: 270
H: 225
BCD PN6: Ø170 4x M16
BCD PN10: Ø180 8x M16
BCD PN16: Ø180 8x M16

Model: G4-DN100
ID: 100
OD: 220
L: 270
H: 225
BCD PN6: Ø170 4x M16
BCD PN10: Ø180 8x M16
BCD PN16: Ø180 8x M16

Model: G4-DN100
ID: 100
OD: 220
L: 270
H: 225
BCD PN6: Ø170 4x M16
BCD PN10: Ø180 8x M16
BCD PN16: Ø180 8x M16

Model: G4-DN100
ID: 100
OD: 220
L: 270
H: 225
BCD PN6: Ø170 4x M16
BCD PN10: Ø180 8x M16
BCD PN16: Ø180 8x M16

Model: G4-DN100
ID: 100
OD: 220
L: 270
H: 225
BCD PN6: Ø170 4x M16
BCD PN10: Ø180 8x M16
BCD PN16: Ø180 8x M16

Model: G4-DN100
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-