duckbill check valves; wafer check valves . the onyx duckbill check valve is reliable and cost effective flow control solution. these products are rubber heat molded products that are suitable for almost any environment.
duckbill check valves. cla-val rf-db rubber-flex™ duckbill check valves are a flexible sleeve design made of quality fabric-reinforced elastomer materials for maximum resistance to corrosion and wear caused by continuous operation with abrasive slurries sludge or effluent. the flexible sleeve provides maximum flow with a minimum pressure drop across the valve at all times.
red valve series tf-2 check valve . the tf-2 was the first duckbill check valve introduced by tideflex technologies. the tf-2 was developed based on a united states environmental protection agency (epa) grant in the 1980s to overcome excessive costs in maintenance and replacement of non-performing flapgates.
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vernay duckbill check valves are precision-molded one-piece elastomeric valves that provide reliable backflow prevention at low-pressure differentials. our duckbill check valves allow free flow with positive differential pressure. with negative differential pressure backflow is checked.
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relief valve sizing calculator will size valves based on equations specified by american petroleum institute. the equations allow engineers to size relieve devices that can be used for different
tideflex duckbill check valves have low headloss and achieve the tightest possible seal for backflow operations particularly at low flow rates. the flexibility of the tideflex check valve allows the valve to compress around trapped solids providing a much better seal than flapgates.