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Backwater Valves

ABS Backwater Valve with Access Box

ALWAYS check your local
building code before installing.

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4963ABSCombo - Mainline Fullport Backwater Valve for use with
4" ABS drainage pipe SHIPPED WITH PE 2013 ACCESS BOX !!

This valve is typically installed inside in the basement floor for easy access.  If you need your installation to be flush with the basement floor level, it is recommended that you install this valve in an Access Box (available below).

If you do not have inside access (as in buildings built on a slab), you may want to look at our Adapt-A-Valves (see Adapt-A-Valve section below).

Please make sure you want 4" ABS when you select this part number.

US, US Express, UK, Canada & Spain Shipping Options at bottom of page

ABS Backwater Valve and Access Box IN STOCK for fast shipment fast shipment $ 198.00

PVC Backwater Valve with Access Box

ALWAYS check your local
building code before installing.

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4963PVCCombo - Mainline Fullport Backwater Valve for use with
4" PVC drainage pipe SHIPPED WITH PE 2013 ACCESS BOX !!

This valve is typically installed inside in the basement floor for easy access.  If you need your installation to be flush with the basement floor level, it is recommended that you install this valve in an Access Box (available below).

If you do not have inside access (as in buildings built on a slab), you may want to look at our Adapt-A-Valves (see Adapt-A-Valve section below).

Please make sure you want 4" PVC when you select this part number.

US, US Express, UK, Canada & Spain Shipping Options at bottom of page

PVC Backwater Valve and Access Box IN STOCK for fast shipment fast shipment $ 203.00

ABS Backwater Valve

ALWAYS check your local
building code before installing.

contact us about your backwater valve needs contact us

4963ABS - Mainline Fullport Backwater Valve for use with 4" ABS drainage pipe WITHOUT ACCESS BOX.

This valve is typically installed inside in the basement floor for easy access.  If you need your installation to be flush with the basement floor level, it is recommended that you install this valve in an Access Box (available below).

If you do not have inside access (as in buildings built on a slab), you may want to look at our Adapt-A-Valves (see Adapt-A-Valve section below).

Please be sure you want a black 4" ABS valve WITHOUT ACCESS BOX when selecting this part.

US, US Express, UK, Canada & Spain Shipping Options at bottom of page

ABS Backwater Valve IN STOCK for fast shipment fast shipment $ 193.00

PVC Backwater Valve

ALWAYS check your local
building code before installing.

contact us about your backwater valve needs contact us

4963PVC - Mainline Fullport Backwater Valve for use with 4" PVC drainage pipe WITHOUT ACCESS BOX.

This valve is typically installed inside in the basement floor for easy access.  If you need your installation to be flush with the basement floor level, it is recommended that you install this valve in an Access Box (available below).

If you do not have inside access (as in buildings built on a slab), you may want to look at our Adapt-A-Valves (see Adapt-A-Valve section below).

Please be sure you want a black 4" PVC valve WITHOUT ACCESS BOX when selecting this part.

US, US Express, UK, Canada & Spain Shipping Options at bottom of page

PVC Backwater Valve IN STOCK for fast shipment fast shipment $ 198.00

 


Access Boxes

Backwater Valve Access Box

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PE2013 - Mainline Backwater Valve Access Box

Allows for easy in-floor installation of our 4963 ABS and PVC Fullport Backwater valves. Top of box is to be set flush to floor level so flat top lid is perfectly even with your floor surface.

The overall width of the open base of the black 2013 Access Box is 14-7/8" X 19-3/4" and steps down to 11-1/8" X 14-7/8" at the top of its 16" height. The removable gray top access panel is 10-7/8" X 14-1/2". Top access panel is held in place by two 1/4" (7/16" wrench) durable stainless steel bolts.

ALWAYS check your local building code before installing this product.

US, US Express, UK, Canada & Spain Shipping Options at bottom of page

Access Box IN STOCK for fast shipment fast shipment $ 69.00
 

Adapt-A-Valves

4" ABS Adapta Valve

ALWAYS check your local
building code before installing.

US, US Express, UK, Canada & Spain Shipping Options at bottom of page

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ML4XABS - Mainline Adapt-A-Valves are sold with removable NORMALLY OPEN cassette included in the price and for use with
4" ABS drainage pipe.

Designed for exterior in-the-ground use without a vault. Removable gate cassette allows gate to be easily removed for cleaning, or if drain line requires snaking.

Standard 6" DWV pipe and cap (not included) is cut to length to extend valve access to ground level at time of installation. At the same time, a piece of 3/4" PVC pipe is cut to length and glued to removable. This unique Adapt a Valve design allows for deep burial access in your yard without the need for a manhole or expensive underground vault.

Please make sure you want 4" ABS NORMALLY OPEN when you select this valve.  ALWAYS check your local building code before installing.

Adapt A Valve does not require a vault !!
4 inch Open ABS Adapt-A-Valve IN STOCK for fast shipment fast shipment $ 203.00

4" ABS Adapta Valve

ALWAYS check your local
building code before installing.

US, US Express, UK, Canada & Spain Shipping Options at bottom of page

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ML4XABS - Mainline Adapt-A-Valves are sold with removable NORMALLY CLOSED cassette included in the price and for use with
4" ABS drainage pipe.

Designed for exterior in-the-ground use without a vault. Removable gate cassette allows gate to be easily removed for cleaning, or if drain line requires snaking.

Standard 6" DWV pipe and cap (not included) is cut to length to extend valve access to ground level at time of installation. At the same time, a piece of 3/4" PVC pipe is cut to length and glued to removable. This unique Adapt a Valve design allows for deep burial access in your yard without the need for a manhole or expensive underground vault.

Please make sure you want 4" ABS NORMALLY CLOSED when you select this valve.  ALWAYS check your local building code before installing.

Adapt A Valve does not require a vault !!
4 inch Closed ABS Adapt-A-Valve IN STOCK for fast shipment fast shipment $ 178.00

Adapta Valve

ALWAYS check your local
building code before installing.

US, US Express, UK, Canada & Spain Shipping Options at bottom of page

contact us about your backwater valve needs contact us

ML4XPVC - Mainline Adapt-A-Valves are sold with removable NORMALLY OPEN cassette included in the price and for use with
4" PVC drainage pipe.

Designed for exterior in-the-ground use without a vault. Removable gate cassette allows gate to be easily removed for cleaning, or if drain line requires snaking.

Standard 6" DWV pipe and cap (not included) is cut to length to extend valve access to ground level at time of installation. At the same time, a piece of 3/4" PVC pipe is cut to length and glued to removable. This unique Adapt a Valve design allows for deep burial access in your yard without the need for a manhole or expensive underground vault.

Please make sure you want 4" PVC NORMALLY OPEN when you select this valve.  ALWAYS check your local building code before installing.

Adapt A Valve does not require a vault !!
4 inch Open PVC Adapt-A-Valve IN STOCK for fast shipment fast shipment $ 209.00

Adapta Valve

ALWAYS check your local
building code before installing.

US, US Express, UK, Canada & Spain Shipping Options at bottom of page

contact us about your backwater valve needs contact us

ML4XPVC - Mainline Adapt-A-Valves are sold with removable NORMALLY CLOSED cassette included in the price and for use with 4" PVC drainage pipe.

Designed for exterior in-the-ground use without a vault. Removable gate cassette allows gate to be easily removed for cleaning, or if drain line requires snaking.

Standard 6" DWV pipe and cap (not included) is cut to length to extend valve access to ground level at time of installation. At the same time, a piece of 3/4" PVC pipe is cut to length and glued to removable. This unique Adapt a Valve design allows for deep burial access in your yard without the need for a manhole or expensive underground vault.

Please make sure you want 4" PVC NORMALLY CLOSED when you select this valve.  ALWAYS check your local building code before installing.

Adapt A Valve does not require a vault !!
4 inch Closed PVC Adapt-A-Valve IN STOCK for fast shipment fast shipment $ 184.00

Adapt a valve

ALWAYS check your local
building code before installing.

US, US Express, UK, Canada & Spain Shipping Options at bottom of page

contact us about your backwater valve needs contact us

ML3XABS - Mainline Adapt-A-Valves are sold with removable NORMALLY CLOSED cassette included in the price and for use with 3" ABS drainage pipe.

Designed for exterior in-the-ground use without a vault. Removable gate cassette allows gate to be easily removed for cleaning, or if drain line requires snaking.

Standard 4" DWV pipe and cap (not included) is cut to length to extend valve access to ground level at time of installation. At the same time, a piece of 3/4" PVC pipe is cut to length and glued to removable. This unique Adapt a Valve design allows for deep burial access in your yard without the need for a manhole or expensive underground vault.

Please make sure you want 3" ABS NORMALLY CLOSED when you select this valve.

Adapt A Valve does not require a vault !!
3 inch Closed ABS Adapt-A-Valve available soon . . . $ 88.00 PVC Backwater Valve available soon . . . .

Adaptavalve

ALWAYS check your local
building code before installing.

US, US Express, UK, Canada & Spain Shipping Options at bottom of page

contact us about your backwater valve needs contact us

ML3XPVC - Mainline Adapt-A-Valves are sold with removable NORMALLY CLOSED cassette included in the price and for use with " PVC drainage pipe.

Designed for exterior in-the-ground use without a vault. Removable gate cassette allows gate to be easily removed for cleaning, or if drain line requires snaking.

Standard 4" DWV pipe and cap (not included) is cut to length to extend valve access to ground level at time of installation. At the same time, a piece of 3/4" PVC pipe is cut to length and glued to removable. This unique Adapt a Valve design allows for deep burial access in your yard without the need for a manhole or expensive underground vault.

Please make sure you want 3" PVC NORMALLY CLOSED when you select this valve.

Adapt-A-Valve does not require a vault !!
3 inch Closed PVC Adapt-A-Valve IN STOCK for fast shipment fast shipment $ 88.00
 

Extra Adapt-A-Valves Cassettes

Adaptavalve cassette

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PA4CassNC - Extra NORMALLY CLOSED Cassette
for 4" ABS or PVC Adapt-A-Valve.

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4 inch Normally Closed Adapt-A-Valve Gate IN STOCK for fast shipment fast shipment $ 49.00

adaptavalve open cassette

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PA4CassNO - Extra NORMALLY OPEN Cassette
for 4" ABS or PVC Adapt-A-Valve.

Uses 4" special buoyant disk for flotation to lift gate into the closed position when a backflow condition occurs.

US, US Express, UK, Canada & Spain Shipping Options at bottom of page

 

4 inch Normally Open Adapt-A-Valve Gate IN STOCK for fast shipment fast shipment $ 72.00

 

Flood Alarms

flood alarm

Wire it to every possible point of water backup or leak in your home and you can rest assured you will know when you need to take action.

While a backwater valve will keep the neighbors sewage out of your home, a leaky washing machine, hot water heater, etc. can cause problems that this device will detect.

Additionally, if your backwater valve is working to protect you from a problem downstream, you will want to know that you should not run water or flush toilets in your own home until the downstream problem is solved.

Operates on one 9-Volt battery that alerts you when it is time for a battery change.

flood alarm

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11 inch Flood Alarm IN STOCK for fast shipment fast shipment 11" Sensor 1-pack:
 $ 22.97
11 inch Flood Alarm IN STOCK for fast shipment fast shipment 11" Sensor 2-pack:
 $ 41.97
11 inch Flood Alarm IN STOCK for fast shipment fast shipment 11" Sensor 6-pack:
 $ 104.97
11 inch Flood Alarm IN STOCK for fast shipment fast shipment 11" Sensor 12-pack:
 $ 184.97
3 foot Flood Alarm IN STOCK for fast shipment fast shipment 3 ft. Sensor 1-pack:
 $ 32.97
5 foot Flood Alarm IN STOCK for fast shipment fast shipment 5 ft. Sensor 1-pack:
 $ 35.97
10 foot Flood Alarm IN STOCK for fast shipment fast shipment 10 ft. Sensor 1-pack:
 $ 40.97
20 foot Flood Alarm IN STOCK for fast shipment fast shipment 20 ft. Sensor 1-pack:
 $ 45.97


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backflow check valve products

 - Back water valves - Backwater Valve Diagram - Backwater Valve Features -
- Backwater Valve Videos - Backflow Links - Backwater Valve Brochure (pdf) - Backwater Valve Animation -

- Adapt-A-Valves - Adapt-A-Valve Brochure (pdf) -
- Affordable Flood Alarms - Mainline History - Testimonials - Home -


backwater valve measurements and specifications Measurements and Specifications
Back water valve questions Frequently Asked Questions

 contact us about your backwater valve needs Contact Us

Mainline Fullport Backwater Valves offer the right solution for your sewer backup problems. 
SPECIAL OFFER: We ship our Mainline Backwater Valves with Access Box ($85.00 value if purchased separately)
Valves without Access Box are also available with a slight shipping discount in the price.

Protect Your Home with a Backwater Valve
from Backwater-Valve.com

telephone Phone Greg at 330.836.9393
(9 AM - 4 PM Eastern or Voicemail anytime)

email Email: Help@Backwater-Valves.com
Back water valve questionsCheck Our FREQUENTLY ASKED QUESTIONS Page

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Akron, OH, USA
All rights reserved.

backflow prevention links

backwater-valves.com is independently owned and resells
products produced by various manufacturers and assumes no
liability for the installation of backwater valves and related products.
Check with the plumbing authority in the municipality in which your valve
is to be installed to insure that your installation is in compliance with local code,
and be sure have your valve inspected by your local plumbing inspector after installation.
Inspect your valve frequently; the Backwater Valve through its clear plastic housing top,
and the Adapt-A-Valve, by removing the gate cassette.

IMPORTANT NOTES:
Pipe end-to-end, the Adapt-A-Valve takes up 6" of run in your line
and the outlet is 1-1/2" LOWER than the inlet, so in just 6"
the level of the pipe at the outlet side needs to be 1-1/2" lower.
Pipe end-to-end, the Backwater Valve takes up 12" of run in your line
and the outlet is 5/8" LOWER than the inlet, so in just 12"
the level of the pipe at the outlet side needs to be 5/8" lower.
Depending upon the amount of slope in your line
(2% minimum is required for proper operation),
you may need to replace several feet of pipe downstream
from the valve to average out this "loss" of fall.

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