Description
The Series 33 and 39 In-Line Check Valves are designed to handle abrasive slurries, sewage, sludge and other difficult services. At the heart of the Series 33 and Series 39 Check Valves are fabric-reinforced elastomer check sleeves that provide through flow at minimum pressure drop across the valves at all times. Forward pressure opens the valves automatically, reverse pressure seals the valves. The check sleeves even seal 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".
Contact Red Valve to see how we can find a solution to fit your needs.
