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Duckbill Check Valves

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  • Pneuline Supply Inc.

    Pneuline Supply Inc. offers the following duckbill check valve configurations: QCD polycarbonate, CNV tubing, CDV acrylic check, and ASD ball. Model CNV valves are made for tubes ranging from 1/16 to 5/32 ID, and they have cracking pressures 3" off the water column. These valves are constructed from polypropylene, epichlorohydrin, and EPDM materials.

  • Onyx Valve Co.

    Onyx Valve Co. offers self-contained, external, and internal duckbill check valves. Flanged fully enclosed duckbill check valves feature carbon steel fabricated enclosures, inner pipeline backflow prevention, and no mechanical parts. These valves are able to ensure the mono-directional flow of sludge, sewage, slurries, and hard to handle fluids. They come in sizes ranging from 14 to 60.

  • Industrial Specialties Mfg.

    Industrial Specialties Mfg. offers CVT Series, CVDB Series, and IS Series duckbill check valves. CVT Series valves have 1/8" non-barbed connections, white silicone bills, and clear acrylic bodies. CVDB Series valves have barbed hoses ranging from 1/8" to 3/16", silicone duckbills, and polypropylene, polycarbonate, Kynar, and nylon materials. IS Series valves have cracking pressures up to 0.112 PSI and polycarbonate bodies.

  • Red Valve Co./Tideflex Technologies

    Red Valve Co./Tideflex Technologies offers Tideflex check valves for the following applications: outfall lines, sludge pumping, equalization basins, booster stations, pump/lift stations, etc. These valves feature a 100% rubber construction and a unique duckbill shape. They can be secured with ANSI flanged, slipped onto/into existing pipes, connected with thimble plates, or a variety of other customizable options.

  • Ark-Plas Products, Inc.

    Ark-Plas Products, Inc. offers duckbill check valves. These plastic valves are constructed from "flow-through" silicone, they have small diameter bodies, low-pressure capabilities, and are sensitive to flow/pressure fluctuations.

  • Vernay

    Vernay offers duckbill check valves. These valves feature free flows with positive differential pressures, a one-piece elastomeric construction, precision-molding, and can operate in several hundred kPa of water. Valves can be installed easily installed, easily sealed, and will prevent backflow leakage when minimal pressures are applied.

  • Elder Rubber Co

    Elder Rubber Co. offers duckbill check valves. These valves are available as pre-loaded, they range in size from 0.1" to 1", and they operate in ranges from just a few inches all the way up to several hundred PSI. Valves have the following compounding capabilities: polyacrylate acrylic, styrene-butadiene, polyurethane, chloroprene, epichlorohydrin, polyisoprene, butyl, silicone, ethylene propylene, nitrile, etc.

  • Frank Olsen Company

    Frank Olsen Company offers flanged end, slip-on, and inline duckbill check valves. Style 710 ProFlex rubber check valves range in size from 1" to 72", they range in length from 4" to 98", and they have flange OD's ranging from 4.25" to 86.50". These valves feature an all-rubber construction, a quiet operation, an anti-backflow design, and non-warping/freezing capabilities. They have operating temperature of up to 250°, and they are constructed from Viton, neoprene, Nitrile, EPDM, chlorobutyl, and Hypalon materials.