Backwater Valves

Backwater Valve
ALWAYS check your local building code before installing. contact us	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 (Schedule 40 DWV) when you select this part number. US & Protectorates, US Express, All Canadian Provinces, UK, Western Europe, Scandinavia, Israel, Spain, South Africa, Australia, New Zealand. SPECIAL NOTE: You MUST be a "PayPal Verified" buyer for us to ship Internationally. Shipping Options at bottom of page
		$ 214.00

ALWAYS check your local building code before installing. contact us	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 (Schedule 40 DWV) when you select this part number. US & Protectorates, US Express, All Canadian Provinces, UK, Western Europe, Scandinavia, Israel, Spain, South Africa, Australia, New Zealand. SPECIAL NOTE: You MUST be a "PayPal Verified" buyer for us to ship Internationally. Shipping Options at bottom of page
		$ 219.00

ALWAYS check your local building code before installing. 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 (Schedule 40 DWV) valve WITHOUT ACCESS BOX when selecting this part. US & Protectorates, US Express, All Canadian Provinces, UK, Western Europe, Scandinavia, Israel, Spain, South Africa, Australia, New Zealand. SPECIAL NOTE: You MUST be a "PayPal Verified" buyer for us to ship Internationally. Shipping Options at bottom of page
		$ 189.00

ALWAYS check your local building code before installing. 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 (Schedule 40 DWV) valve WITHOUT ACCESS BOX when selecting this part. US & Protectorates, US Express, All Canadian Provinces, UK, Western Europe, Scandinavia, Israel, Spain, South Africa, Australia, New Zealand. SPECIAL NOTE: You MUST be a "PayPal Verified" buyer for us to ship Internationally. Shipping Options at bottom of page
		$ 189.00

Replacement Parts for Backwater Valves

contact us	Replacement Lid with Cap for 4963 - Clear Lid with 4" Cleanout Cap and O-Ring Seal for both 4" ABS and 4" PVC Backwater Valves. US & Protectorates, US Express, All Canadian Provinces, UK, Western Europe, Scandinavia, Israel, Spain, South Africa, Australia, New Zealand. SPECIAL NOTE: You MUST be a "PayPal Verified" buyer for us to ship Internationally. Shipping Options at bottom of page
		$ 39.00

contact us	4963 RK - New Stainless Steel Bolts (keep and use original nuts), Sticky Foam Replacement Lid Gasket and Neoprene O-ring that seats in valve body and seals the gate for both 4" ABS and 4" PVC Backwater Valves. This Replacement Kit may be needed if you remove the clear plastic lid from your Backwater Valve for maintenance, to replace the gate or to replace the lid. After carefully cleaning the surface, the new foam gasket is installed. US & Protectorates, US Express, All Canadian Provinces, UK, Western Europe, Scandinavia, Israel, Spain, South Africa, Australia, New Zealand. SPECIAL NOTE: You MUST be a "PayPal Verified" buyer for us to ship Internationally. Shipping Options at bottom of page
		$ 19.00

contact us	4963 Gate - New Gate for both 4" ABS and 4" PVC Backwater Valves. These Gates rarely need to be replaced, but we keep them in stock just in case. NOTE: The Clear Plastic Lid must be removed to replace Gate as it is larger than the 4" cleanout access. Gate simply snaps in place in channels inside of the valve body. Replacement Lids and Bolt/Gasket kits are also available above. US & Protectorates, US Express, All Canadian Provinces, UK, Western Europe, Scandinavia, Israel, Spain, South Africa, Australia, New Zealand. SPECIAL NOTE: You MUST be a "PayPal Verified" buyer for us to ship Internationally. Shipping Options at bottom of page
		$ 19.00

Adapt-A-Valves

ALWAYS check your local
building code before installing.

US & Protectorates, US Express, All Canadian Provinces, UK, Western Europe, Scandinavia, Israel, Spain, South Africa, Australia, New Zealand. SPECIAL NOTE: You MUST be a "PayPal Verified" buyer for us to ship Internationally. Shipping Options at bottom of page

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 the removable gate on one end and tee on the other. 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 (Schedule 40 DWV) NORMALLY OPEN when you select this valve. ALWAYS check your local building code before installing.

Adapt A Valve does not require a vault !!

$ 190.00

4" ABS Adapta Valve

ALWAYS check your local
building code before installing.

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.

Please make sure you want 4" ABS (Schedule 40 DWV) NORMALLY CLOSED when you select this valve. ALWAYS check your local building code before installing.

Adapt A Valve does not require a vault !!

$ 190.00

Adapta Valve

ALWAYS check your local
building code before installing.

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.

Please make sure you want 4" PVC (Schedule 40 DWV) NORMALLY OPEN when you select this valve. ALWAYS check your local building code before installing.

Adapt A Valve does not require a vault !!

$ 190.00

Adapta Valve

ALWAYS check your local
building code before installing.

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.

Please make sure you want 4" PVC (Schedule 40 DWV) NORMALLY CLOSED when you select this valve. ALWAYS check your local building code before installing.

$ 190.00

Adapt a valve

ALWAYS check your local
building code before installing.

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

ML3XABS - Mainline Adapt-A-Valves are sold with removable NORMALLY OPEN 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 the removable gate on one end and tee on the other. 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 (Schedule 40 DWV) NORMALLY OPEN when you select this valve.

Adapt A Valve does not require a vault !!

$ 155.00

Adaptavalve

ALWAYS check your local
building code before installing.

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

ML3XPVC - Mainline Adapt-A-Valves are sold with removable NORMALLY OPEN cassette included in the price and for use with 3" 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.

Please make sure you want 3" PVC (Schedule 40 DWV) NORMALLY OPEN when you select this valve.

Adapt-A-Valve does not require a vault !!

$ 155.00

Extra Adapt-A-Valves Cassettes
contact us	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 & Protectorates, US Express, All Canadian Provinces, UK, Western Europe, Scandinavia, Israel, Spain, South Africa, Australia, New Zealand. SPECIAL NOTE: You MUST be a "PayPal Verified" buyer for us to ship Internationally. Shipping Options at bottom of page
		$ 39.00

contact us	PA4CassNC - Extra NORMALLY CLOSED Cassette for 4" ABS or PVC Adapt-A-Valve. US & Protectorates, US Express, All Canadian Provinces, UK, Western Europe, Scandinavia, Israel, Spain, South Africa, Australia, New Zealand. SPECIAL NOTE: You MUST be a "PayPal Verified" buyer for us to ship Internationally. Shipping Options at bottom of page
		$ 39.00

contact us	PA3CassNO - Extra NORMALLY OPEN Cassette for 3" ABS or PVC Adapt-A-Valve. US & Protectorates, US Express, All Canadian Provinces, UK, Western Europe, Scandinavia, Israel, Spain, South Africa, Australia, New Zealand. SPECIAL NOTE: You MUST be a "PayPal Verified" buyer for us to ship Internationally. Shipping Options at bottom of page
		$ 39.00

contact us	PA3CassNC - Extra NORMALLY CLOSED Cassette for 3" ABS or PVC Adapt-A-Valve. US & Protectorates, US Express, All Canadian Provinces, UK, Western Europe, Scandinavia, Israel, Spain, South Africa, Australia, New Zealand. SPECIAL NOTE: You MUST be a "PayPal Verified" buyer for us to ship Internationally. Shipping Options at bottom of page
		$ 39.00

Adapt-A-Valves Eze Test Gate
contact us	PZ-4-TZ Test-Eze Gate - Solid Cassette acts as an Isolation Valve / Knife Valve for either 4" ABS or 4" PVC Adapt-A-Valve. The insertion of a Test-Eze Gate into your Adapt-A-Valve allows for isolation of the Adapt-A-Valve Chamber / Cleanout to manually stop flow into and out of the building for inspection, or for some of the following other reasons: flushing of city mains, servicing of sewer lines, abandonment of premises, isolation of seasonal properties, during storms / hurricanes, contractors pressure testing of plumbing systems upstream of the valve chamber / cleanout, etc. US & Protectorates, US Express, All Canadian Provinces, UK, Western Europe, Scandinavia, Israel, Spain, South Africa, Australia, New Zealand. SPECIAL NOTE: You MUST be a "PayPal Verified" buyer for us to ship Internationally. Shipping Options at bottom of page
		$ 29.00

contact us	PZ-3-TZ Test-Eze Gate - Solid Cassette acts as an Isolation Valve / Knife Valve for either 3" ABS or 3" PVC Adapt-A-Valve. The insertion of a Test-Eze Gate into your Adapt-A-Valve allows for isolation of the Adapt-A-Valve Chamber / Cleanout to manually stop flow into and out of the building for inspection, or for some of the following other reasons: flushing of city mains, servicing of sewer lines, abandonment of premises, isolation of seasonal properties, during storms / hurricanes, contractors pressure testing of plumbing systems upstream of the valve chamber / cleanout, etc. US & Protectorates, US Express, All Canadian Provinces, UK, Western Europe, Scandinavia, Israel, Spain, South Africa, Australia, New Zealand. SPECIAL NOTE: You MUST be a "PayPal Verified" buyer for us to ship Internationally. Shipping Options at bottom of page
		$ 29.00

- Back water valves - Backwater Valve Diagram - Backwater Valve Features -
- Backwater Valve Videos - Backflow Links - Backflow Preventers - Backwater Valve Animation -

- INSTALLATION TIPS -

- Fullport Backwater Valve Brochure (Adobe Acrobat pdf) --- Adapt-A-Valve Brochure (Adpbe Acrobat pdf) -

- Adapt-A-Valves -
- NEW Adapt-A-Valve Inspection Chamber -
- Basement Drain Backing Up - Mainline History - Testimonials - Home -

- Affordable Flood Alarms - Pedestal Sump Pumps / Submersible Sump Pumps -

Measurements and Specifications
Frequently Asked Questions
Contact Us

Mainline Fullport Backwater Valves offer the right solution for your sewer backup problems.
SPECIAL OFFER: Mainline Backwater Valve "Combo" with Access Box ($89.00 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

All Orders must be placed online by Credit Card,
but you may phone Greg at 330.836.9393 for info
(9 AM - 4 PM EST Monday - Friday or Voicemail anytime)
Email: Help@Backwater-Valves.com
Check Our FREQUENTLY ASKED QUESTIONS Page

backwater-valves.com is independently owned and resells
products produced by Mainline of Canada 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 3/4" LOWER than the inlet, so in just 12"
the level of the pipe at the outlet side needs to be 3/4" 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.

Policies
Mainline Valve Warranty (printable Adobe Acrobat .pdf file)

High-volume inquires are directed to Tom at Mainline

Backwater-valves.com / Bike-run-walk.com accepts these
major credit cards plus eCheck
using PayPal's secure checkout.
(No PayPal account needed)
We are unable to process phone orders,
all orders must be placed via the website.
more . . .

Inspection Chambers

ALWAYS check your local building code before installing. contact us	ML88ICRNC - Mainline PVC Inspection Chamber (constructed to SDR 26 heavy wall sewer specification) for use with 4" PVC drainage pipe; SHIPPED WITH Normally OPEN Gate (optional gates below) Click for details about this new item Please make sure you want 4" PVC (Schedule 40 DWV) when you select this part number. US & Protectorates, US Express, All Canadian Provinces, UK, Western Europe, Scandinavia, Israel, Spain, South Africa, Australia, New Zealand. SPECIAL NOTE: You MUST be a "PayPal Verified" buyer for us to ship Internationally. Shipping Options at bottom of page
		$ 239.00

Standard Flood Alarms
Wire it to every possible point of water backup or leak in your home and You may 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. US & Protectorates, US Express, All Canadian Provinces, UK, Western Europe, Scandinavia, Israel, Spain, South Africa, Australia, New Zealand. SPECIAL NOTE: You MUST be a "PayPal Verified" buyer for us to ship Internationally. Shipping Options at bottom of page contact us		11" Sensor 1-pack: $ 19.00
		11" Sensor 2-pack: $ 36.00
		11" Sensor 6-pack: $ 99.00
		11" Sensor 12-pack: $ 185.00
		3 ft. Sensor 1-pack: $ 32.00
		5 ft. Sensor 1-pack: $ 33.00
		10 ft. Sensor 1-pack: $ 37.00
		20 ft. Sensor 1-pack: $ 41.00

Click for details about this new item