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

how to install your backwater valve INSTALLATION TIPS; how to install backwater valves installing a mainline backwater valve

- Fullport Backwater Valve Brochure (Adobe Acrobat pdf) - adobe acrobat pdf files - Adapt-A-Valve Brochure (Adpbe Acrobat pdf) -
- new Termex backflow preventors Termex Backwater Valve Brochure (Adobe Acrobat pdf)
- Mainline ML FR4 ABS Automatic Backwater Valve ML-FR4 Mainline Backwater Valve Fio Valve Brochure (Adobe Acrobat pdf)

6" Backwater Valves - Mainline STRAIGHT FIT Backwater Valves

- Adapt-A-ValvesAdapt-A-Valve Inspection Chamber -
- Termex backflow prevention Termex Backwater Valves -
 - fio Valve ML-FR4 backwater valve by Mainline Mainline ML-FR4 Backwater Valve - Fio Valve -
- Basement Drain Backing Up - Mainline History - Testimonials - Home -

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

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

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

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backflow prevention links

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)

buy backwater valves online
High-volume inquires are directed to Tom at Mainline

 

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