Description
- Fits 3 in. DWV Sch. 40 pipe; use adapter for sewer and drain pipe
- Quick-action flapper allows unrestricted, unidirectional flow
- Elastomeric gasket in flapper ensures watertight seal
NDS 3 in. ABS Backwater Valve protects low areas or basements from the backflow of waste from a street sewer. The quick-action flapper allows an unrestricted, unidirectional flow, and the flapper’s elastomeric gasket ensures a watertight seal. Designed for use in the installation of non-pressurized drainage and sewer piping systems.
- ABS construction is durable, lightweight, economical and resistant to corrosion and chemicals
- Hub outlets are suitable for use with DWV pipe. May be adapted to sewer and drain pipe with NDS DWV to Sewer drain adapters
- Hub x Hub solvent-welded connections
- Fits 3 in. DWV Schedule 40 pipe
- Maximum working pressure of 5 PSI
- Working temperature range of -30 – 140 degrees Fahrenheit
- Made to ASTM specifications
- Elastomeric gasket in the flapper ensures a watertight seal
- Neoprene gasket in the access cap provides a positive seal
- Access riser with cover offers simple access to the backwater valve for inspection and maintenance
- Threaded cap is designed for hand tightening
- Black color
- Made in the USA
- NDS offers a full line of solvent weld fittings for all of your sewer and drain needs. NDS solvent weld fittings are offered in ABS, Styrene and PVC and range in size from 3 in. to 8 in.
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