Internet #100128063

Model # 375

Store SKU #637487

0052063303758

3 in. ABS Backwater Valve

  • 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
$ 31 31

Frequently Bought Together

Frequently Bought Together

Product Overview

  • 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.
  • California residents see Prop 65 WARNINGS

Product Overview

  • 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
Model #: 375
Sku #: 637487
Internet #: 100128063

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.
  • California residents see Prop 65 WARNINGS

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

Compare Similar

Compare Similar Products
Brand Oatey Oatey
Name Oatey PVC DWV Backwater Valve 3 in. ABS Backwater Valve Sure-Vent 2 in. x 3 in. ABS Air Admittance Valve - 160 DFU 4 in. ABS Backwater Valve
Price
$29.26
$31.31
$32.96
$34.99
Ratings (26) (2) (1) (4)
Maximum Pressure (psi) 80 5 0 5
Compatible Pipe Material PVC ABS ABS ABS
Valve Type Air Admittance Air Admittance Air Admittance Air Admittance
Connection Sewer & Drain Sewer & Drain Screw on Sewer & Drain
Material PVC Acrylonitrile Butadiene Styrene (ABS) Acrylonitrile Butadiene Styrene (ABS) Acrylonitrile Butadiene Styrene (ABS)
Application Non-Potable Water Non-Potable Water Rough-In valve Non-Potable Water
View Product View Product View Product View Product

Specifications

Dimensions

Inlet Diameter (In.)
2
Outlet Diameter (In.)
2
Product Depth (in.)
3 in
Product Height (in.)
5.03
Product Length (in.)
3.0
Product Width (in.)
3.53

Details

Application
Non-Potable Water
Compatible Pipe Material
ABS
Connection
Sewer & Drain
Features
Slip Joint Connect
Indoor/Outdoor
Outdoor
Material
Acrylonitrile Butadiene Styrene (ABS)
Maximum Pressure (psi)
5
Maximum Working Temperature (F)
140
Product Weight (lb.)
1.66lb
Returnable
180-Day
Valve Type
Air Admittance

Warranty / Certifications

Manufacturer Warranty
Limited Lifetime

Specifications

Dimensions

Inlet Diameter (In.)
2
Outlet Diameter (In.)
2
Product Depth (in.)
3 in
Product Height (in.)
5.03
Product Length (in.)
3.0
Product Width (in.)
3.53

Details

Application
Non-Potable Water
Compatible Pipe Material
ABS
Connection
Sewer & Drain
Features
Slip Joint Connect
Indoor/Outdoor
Outdoor
Material
Acrylonitrile Butadiene Styrene (ABS)
Maximum Pressure (psi)
5
Maximum Working Temperature (F)
140
Product Weight (lb.)
1.66lb
Returnable
180-Day
Valve Type
Air Admittance

Warranty / Certifications

Manufacturer Warranty
Limited Lifetime

Questions & Answers

Can this be installed vertically ?

Can this be installed vertically ?
Asked by: markD
In order for the backwater valve to function correctly it needs to be installed horizontally.
Answered by: Dr. Drainage
Date published: 2017-12-18

how are you going to install the in a existing sewer line when the inlet and outlet are at different heights???

Asked by: john
The is a difference of approximately 1/2" between the 2 sides of the backwater valve. The reason for the difference is to ensure that water continues to flow in the correct direction, even in cases where the pipe is installed with very little slope. If installed on an existing line you may need to excavate additional pipe so that you are able to adjust the pipe as needed.
Answered by: Dr. Drainage
Date published: 2019-07-18

Why didn't the extension and cap come with my order?

The backwater valve mounts under a slab and an extension is necessary how do I get the extension & cap?
Asked by: Michael
Thank you for your recent inquiry with The Home Depot. Unfortunately, I need more information from you in order to properly address your question. For any other questions, please call us at HomeDepot.com Customer Service 800-430-3376. Thank you for shopping Home Depot.
Answered by: THDSupport
Date published: 2015-09-20

#375 3 in. ABS Backwater Valve ; What are the inlet and outlet pipe size and the cap size ? The ...

#375 3 in. ABS Backwater Valve ; What are the inlet and outlet pipe size and the cap size ? The specifications are saying 2 inch on the inlet/outlet is this correct? Also, which direction should the valve be installed with cap side pointing up I would think (it's pictured upside down in advertisement).
Asked by: Jim
  • y_2020, m_9, d_24, h_16CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.12
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_4
  • loc_, sid_100128063, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=BEST_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=POSITIVE_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 28ms
  • QUESTIONS, PRODUCT
Get Everything You Need
Get Everything You Need