Sump Pumps

In many cases, opening a hole in your basement floor to install a backwater valve will expose groundwater in areas with a high water table or recent heavy rainfall.

Water will not hurt the outside of a backwater valve, but can make it difficult to inspect your valve. In cases like this, a sump pit can be excavated and a sump pump installed to pump out standing water and lower the water table below your basement floor.

A sump pump is a pump used to remove water that has accumulated in a water collecting sump pit or sump crock. Water will accumulate in the sump pit when rainwater or natural ground water is higher than the pit.

Plumbing codes in most municipalities specify that sump pumps should not be connected to the sanitary sewer. A separate line should be run to the front ditch or other appropriate water course.

Pumps are Usually dependant on a home's electrical system, and some sump pumps have a battery backup. Since a sump pit may overflow if not constantly pumped, a backup system is important for cases when the main power is out for prolonged periods of time. Here are some samples of battery backup sump pumps.

Pedestal Sump Pumps & Submersible Sump Pumps

Sump pumps are available in two basic formats; pedestal sump pumps and submersible sump pumps. A pedestal sump pump's motor is mounted above the pit, where it is more easily serviced but also a bit louder when operating and more visible. The submersible sump pump is entirely mounted inside the pit, and is specially sealed to prevent water from entering its electrical circuits.

Sump Pumps

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Adapt-A-Valves

Adapt-A-Valve Brochure (Adobe Acrobat pdf)

Adapt-A-Valve Inspection Chamber

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

Basement Drain Backing Up

Flood Alarm

Frequently Asked Questions

Fullport Backwater Valve Brochure (Adobe Acrobat pdf)

INSTALLATION TIPS; how to install backwater valves

Termex Backwater Valves
Termex Backwater Valve Brochure (Adobe Acrobat pdf)

NEW: TOP-CHECK BACKWATER VALVES

Mainline ML-FR4 Backwater Valve (Fio Valve)
ML-FR4 Mainline Backwater Valve Fio Valve Brochure (Acrobat pdf)

6" Backwater Valves - Mainline STRAIGHT FIT Backwater Valves

Mainline History

Measurements, Specifications and IAPMO Certifications

Testimonials

Mainline Fullport Backwater Valves offer the right solution for your sewer backup problems.

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Be sure to 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.

NOTE: New Straight-Fit and ML-FR4 require less slope. (refer to detail pages for these products)

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