Valves › Check Valve
Duckbill Check Valve
Rubber Duckbill Check Valves and Inline Rubber Check Valves are an exceptionally reliable and cost effective method to control back pressures in sewage treatment plants. Other common applications are stormwater outfall, effluent discharge, flood control, wet wells. These valves are fully passive flow devices, which require absolutely no maintenance whatsoever, no source of power or manual operating assistance, and are an excellent alternative to conventional flap gate valves and other check valves.
The flexible Rubber Duckbill Valve is normally closed but will open with very minimal head pressure, always providing maximum flow with minimal pressure drop across the valve. Conventional Flap-Gate Check valves, and other check valves are mechanical and have metal components that are commonly know to malfunction, rust, and seize. Rubber Duckbill Check Valves will even handle large obstructions without jamming or binding, and guarantee trouble free back flow prevention, and can even seal around trapped or suspended solids with minimum back pressure. The finest of engineering elastomers are used, and the outer layers, are designed to repel marine organisms.
Sizes 2" - 22" (DN50-DN550)
Elastomers: PGR, SBR, CR, EPDM, CSM, NBR, CIIR
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Cone Check
Cone Check valves can be used anywhere that a reliable, trouble free non-return valve is required. Max working pressure 1,600 kpa. Can be installed horizontally or vertically in between AS2129 Table D/E, AS4087 Class 16 or Ansi 150 flanges.
Well suited to more difficult pumping situations such as slurry, chemical process, seawater, irrigation, mine dewatering and fluids containing debris.
Drop tight at low head makes them ideal for foot valve applications.
Body Material: 316ss or SG Iron or Bronze
Sealing element: 316ss-rubber coated
Fixing bolt, nut washer: 316ss
Sizes: DN100 / DN150/ DN200 (individual valve)
Larger sizes (by mounting multiple valves on a plate/manifold)
147XU-Swing Check Valve (WCB, Class 150)
Crane 147XU Swing Check Valve, WCB Body, XU Trim (HF Seat rings, 13% chrome overlay on disc), bolted cap, flanged ends Ansi 150#
Size 2" - 24" (DN50 - DN600)
download 147XU Class 150 Check
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159XU-Swing Check valve (WCB, Class 300)
Crane 159XU Swing Check Valve, WCB Body, XU Trim (HF Seat Rings,13% chrome overlay on disc), bolted cap, flanged ends Ansi 300#
Size 2" - 24" (DN50 - DN600)
download 159XU Class 300 Check
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