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 Measurements and Specifications
 Frequently Asked Questions
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Mainline Fullport Backwater Valves offer the right solution for your sewer backup problems.
SPECIAL OFFER: We ship our Mainline Backwater Valves with Access Box ($ 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
 Orders must be placed online by Credit Card,
but you may phone Greg at 330.836.9393 for info
(9 AM - 4 PM Eastern or Voicemail anytime)
Email: Help@Backwater-Valves.com
Check Our FREQUENTLY ASKED QUESTIONS Page
© 2004-2010 Backwater-Valves.com.
Akron, OH, USA
All rights reserved.
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
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.
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