Internet #100153819

Model # 475

Store SKU #637520

0052063434759

4 in. ABS Backwater Valve

  • Resilient ABS plastic material is resistant to heat and impact
  • Swift flapper maintains steady, unidirectional water flow
  • Elastomeric gasket seal on the flapper prevents water leakage
$ 34 99

Frequently Bought Together

Frequently Bought Together

Product Overview

  • Resilient ABS plastic material is resistant to heat and impact
  • Swift flapper maintains steady, unidirectional water flow
  • Elastomeric gasket seal on the flapper prevents water leakage
The NDS 4 in. ABS Backwater Valve is designed to protect low areas or basements from the backflow of waste from street sewers. The quick-action flapper allows unrestricted unidirectional flow and features an elastomeric gasket to ensure a watertight seal. It has limited lifetime warranty.
  • ABS is chemically resistant
  • Use to protect basements or low areas from street sewer backflow
  • Outdoor use
  • H x H connection
  • 5 psi maximum working pressure
  • Requires a working temperature of -30 - 140 degrees
  • Quick-action flapper allows an unrestricted, unidirectional flow and is easy to remove and replace
  • Elastomeric gasket in the flapper for a watertight seal
  • Threaded cap is designed for tightening by hand
  • Neoprene gasket in the access cap provides a positive seal
  • Valve hub outlets fit 4 in. DWV pipe
  • California residents see Prop 65 WARNINGS

Product Overview

  • Resilient ABS plastic material is resistant to heat and impact
  • Swift flapper maintains steady, unidirectional water flow
  • Elastomeric gasket seal on the flapper prevents water leakage
Model #: 475
Sku #: 637520
Internet #: 100153819

The NDS 4 in. ABS Backwater Valve is designed to protect low areas or basements from the backflow of waste from street sewers. The quick-action flapper allows unrestricted unidirectional flow and features an elastomeric gasket to ensure a watertight seal. It has limited lifetime warranty.

  • ABS is chemically resistant
  • Use to protect basements or low areas from street sewer backflow
  • Outdoor use
  • H x H connection
  • 5 psi maximum working pressure
  • Requires a working temperature of -30 - 140 degrees
  • Quick-action flapper allows an unrestricted, unidirectional flow and is easy to remove and replace
  • Elastomeric gasket in the flapper for a watertight seal
  • Threaded cap is designed for tightening by hand
  • Neoprene gasket in the access cap provides a positive seal
  • Valve hub outlets fit 4 in. DWV pipe
  • California residents see Prop 65 WARNINGS

Info & Guides

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Compare Similar

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Brand Oatey Oatey
Name 3 in. ABS Backwater Valve Sure-Vent 3 in. x 4 in. PVC Air Admittance Valve with 500 DFU Branch 4 in. ABS Backwater Valve Sure-Vent 3 in. x 4 in. ABS Air Admittance Valve with 500 DFU Branch
Price
$31.31
$34.77
$34.99
$41.65
Ratings (2) (11) (4) (5)
Maximum Pressure (psi) 5 0 5 0
Compatible Pipe Material ABS PVC ABS ABS
Valve Type Air Admittance Air Admittance Air Admittance Air Admittance
Connection Sewer & Drain Screw on Sewer & Drain Screw on
Material Acrylonitrile Butadiene Styrene (ABS) PVC Acrylonitrile Butadiene Styrene (ABS) Acrylonitrile Butadiene Styrene (ABS)
Application Non-Potable Water Rough-In valve Non-Potable Water Rough-In valve
View Product View Product View Product View Product

Specifications

Dimensions

Inlet Diameter (In.)
4
Outlet Diameter (In.)
4
Product Depth (in.)
8
Product Height (in.)
8
Product Length (in.)
8 ft
Product Width (in.)
11.31

Details

Application
Non-Potable Water
Compatible Pipe Material
ABS
Connection
Sewer & Drain
Features
Antisiphon
Indoor/Outdoor
Outdoor
Material
Acrylonitrile Butadiene Styrene (ABS)
Maximum Pressure (psi)
5
Maximum Working Temperature (F)
140
Product Weight (lb.)
3.33 lb
Returnable
180-Day
Valve Type
Air Admittance

Warranty / Certifications

Manufacturer Warranty
Limited Lifetime

Specifications

Dimensions

Inlet Diameter (In.)
4
Outlet Diameter (In.)
4
Product Depth (in.)
8
Product Height (in.)
8
Product Length (in.)
8 ft
Product Width (in.)
11.31

Details

Application
Non-Potable Water
Compatible Pipe Material
ABS
Connection
Sewer & Drain
Features
Antisiphon
Indoor/Outdoor
Outdoor
Material
Acrylonitrile Butadiene Styrene (ABS)
Maximum Pressure (psi)
5
Maximum Working Temperature (F)
140
Product Weight (lb.)
3.33 lb
Returnable
180-Day
Valve Type
Air Admittance

Warranty / Certifications

Manufacturer Warranty
Limited Lifetime

Questions & Answers

Can I install this inside my basement, or is it can be used only outside of house?

Can I install this inside my basement, or is it can be used only outside of house?
Asked by: steed
Technically, yes. As far as code is concerned, I don't know, I don't see why not. The benefits to safety (preventing your basement from filling with turds), to me outweigh the risks of not having one or not being to code.
Answered by: Ben
Date published: 2020-05-27

Does them backwater valve come in PVC

Does them backwater valve come in PVC
Asked by: Chaz
Yes they come in both ABS and PVC
Answered by: Pero
Date published: 2019-01-04

Can this be installed vertically?

Can this be installed vertically?
Asked by: Old
No
Answered by: Pero
Date published: 2019-01-04

I am still needing info on location of valve installation.

I am still needing info on location of valve installation.
Asked by: Scooter
Check with your city inspectors for 100% answer, but my city said it had to be installed before any basement drain. They also said you can't put this on upstairs draining items, so you will have to split the basement and upstairs drain pipes.
Answered by: JOHN
Date published: 2019-01-11
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