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Dual Check Valves, also
called Double Door Check Valves,
Dual Plate Check Valves,
Duo Check Valves or
Butterfly Non Return Valves are
another popular non return valve for a range of applications.
The two doors flap together to allow flow and spring
back onto their seat to prevent reverse flow. They are good for horizontal and
upwards forward flow and, in some cases, downwards flow.
This range has been so successful that it has recently been extended to include PN25 and Stainless versions.
We carry UK stocks backed up by huge stocks at
head office in France.
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Our CB 3448 Twin Plate Check
Valve has a Cast Iron body with plated Ductile
Iron discs and EPDM seal.
Rated PN16 it is wafer pattern for mounting between
flanges. The face-to-face is to EN558 Series 16.
The Cast Iron Wafer Pattern Dual Check Valve is available in the
following sizes DN 40, DN 50, DN 65, DN 80, DN 100, DN 125,
DN 150, DN 200, DN 250, DN 300, DN 350, DN 400, DN 450, DN
500, DN 600, DN 700, DN 800. Or in Imperial 1 1/2 Inch,
2 Inch, 2 1/2 Inch, 3 Inch, 4 Inch, 5 Inch, 6 Inch, 8
Inch, 10 Inch, 12 Inch, 14 Inch, 16
Inch, 18 Inch, 20 Inch, 24 Inch, 28
Inch, 32 Inch.
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The CB 4450 is the PN25 version of the CB3448 Twin Plate Check
Valve. It is almost identical to the CB3448 but with a Ductile Iron body.
CB4450 is available in the
following sizes DN 40, DN 50, DN 65, DN 80, DN 100, DN 125,
DN 150, DN 200, DN 250, DN 300, DN 350, DN 400, DN 450, DN
500. Or in Imperial 1 1/2 Inch,
2 Inch, 2 1/2 Inch, 3 Inch, 4 Inch, 5 Inch, 6 Inch, 8
Inch, 10 Inch, 12 Inch, 14 Inch, 16
Inch, 18 Inch, 20 Inch.
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The Stainless Dual Check Valve Range has a different seat material.
DN50 - DN200 have FPM (Generic Viton®) rubber, DN250 and above have Nitrile rubber.
Most of the range has face to face to EN558 Series 16 except DN50, DN65 and DN80 are Series 50, if you need Series 16 for these sizes then use the CB6450 below.
CB6442 is rated PN16.
Viton is a Registered
Trade Marks of DuPont.
CB6442 sizes are DN 50, DN 65, DN 80, DN 100, DN 125,
DN 150, DN 200, DN 250, DN 300, DN 350, DN 400, DN 450, DN
500, DN 600, DN 700, DN 800. Or in Imperial 2 Inch, 2 1/2 Inch, 3 Inch, 4 Inch, 5 Inch, 6 Inch, 8
Inch, 10 Inch, 12 Inch, 14 Inch, 16
Inch, 18 Inch, 20 Inch, 24 Inch, 28
Inch, 32 Inch.
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CB6450 PN25 Stainless Twin Plate Check
Valve is virtually the same as the CB6442 but rated PN25 and all the valves are EN558 Series 16.
CB6450 is available in the
following sizes DN 50, DN 65, DN 80, DN 100, DN 125,
DN 150, DN 200, DN 250, DN 300, DN 350, DN 400, DN 450, DN
500, DN 600. Or in Imperial
2 Inch, 2 1/2 Inch, 3 Inch, 4 Inch, 5 Inch, 6 Inch, 8
Inch, 10 Inch, 12 Inch, 14 Inch, 16
Inch, 18 Inch, 20 Inch, 24 Inch.
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These Dual Check Valves are a low cost option for a variety of applications - Contact us
for advice on your application.
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