Backwater Valves are designed to prevent backflow in numerous applications where easy service access for maintenance and cleaning is needed. Excellent for use in sanitary or storm sewer drainage systems to prevent waste back up due to inadequate drainage, for balancing multi-level ponds, aquaculture features or storage tank systems, and many other applications. Spears® Backwater Valve has been engineered for improved function and easier service, especially in buried service with use of optional Service-Access Extension Kit.
All PVC Construction with EPDM Flapper Seal
Threaded Top Plug for Convenient Service
Simple Snap-In Internal Flapper Assembly for Easy Replacement
Optional Factory Assembled Service-Access Extension Kits - External Housing with Internal Extension for Convenient Removal, Inspection or Replacement
Optional Extension Components Kits for Assembly with User-Supplied Pipe
Available in Sizes 2", 3", 4" and 6" with Socket Ends
Direct Connection to ASTM D 2665 PVC DWV or other IPS size pipe. Spears® IPS x Sewer Adapters Available for Connection to ASTM 3034 Sewer
Conforms to ASME/ANSI A112.14.1 for Backwater Valves
Pressure Rated to 43 psi (100 feet of head) @ 73°F
