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Tideflex -Â Model Duckbill CIL - Series 33 and Series 39 -In-Line Check Valves
The Tideflex Technologies Series 39 Slurry Duckbill Check Valve is designed to handle abrasive slurries, sewage, sludge and other difficult services. At the heart of the Series 39 Duckbill Check Valve is a fabric-reinforced elastomer check sleeve that provides thru-flow at minimum pressure drop across the valve at all times. Forward pressure opens the valve automatically; reverse pressure seals the valve. The check sleeve even seals around entrapped solids.
This inner rubber duckbill check valves minimize wear and deterioration caused by continuous operation of abrasive slurries. There are no mechanical parts such as hinges, disks or metal seats that can freeze, corrode or bind valve operation. The Series 33 and Series 39 In-Line Check Valves are each provided with a clean-out port and two flush ports and both have a cast iron body, which is available epoxy-coated or rubber-lined. The valves have thru-drilled flange holes and face-to-face dimensions that meet ASME B16.10 specs. When ordering, line pressure and back pressure must be provided as each valve is custom-built to match flow requirements of the installation.
For smaller diameter applications, consider our threaded Series 2633 in sizes 1/2 to 3". For larger applications, consider the Series 39F In-Line Check Valve in sizes to 84".
Features
- Features an all-elastomer, maintenance-free design
- No hinges or seals to bind or freeze
- Resists abrasion
- Provides absolute backflow prevention
- Seals on entrapped solids
- Can be mounted in any position
- Eliminates chatter—silent, non-slamming
- Available in sizes 1" (25 mm) to 24" (600 mm)
Materials of Construction
- Body
- Cast iron ASTM A126 body
- ANSI Class 125/150, DIN PN6, PN10, PN16
- Epoxy-coating or rubber-lined body available
- Elastomer Information