FLOOD-GATE® AUTOMATIC BACKWATER VALVE INSTALLATION
The FLOOD-GATE® Automatic Backwater Valve is designed to protect a building and its contents from flood damage due to a backup in the sanitary sewer system and can also be used in storm sewer applications. Properly installed, the FLOOD-GATE® will provide years of trouble-free automatic service. Depending on individual circumstances, one of the two following installation guidelines must be followed:

OPTION ONE:
The FLOOD-GATE® must be installed in a ventilated and dry access pit in the horizontal drain line between the building and the sewer main (a sealed or flooded pit will restrict the free movement of the valve). Although this provides complete protection from flooding, all of the plumbing fixtures in the building will be out of service once the FLOOD-GATE® is activated. In this type installation, the optional alarm system is highly recommended.

 OPTION TWO:
Another installation, sometimes preferred, locates the FLOOD-GATE® Automatic Backwater Valve (Figure Number 7140) where only the fixtures installed below grade (as in a basement) are connected on the upstream side of the valve. All fixtures installed above grade are connected on the downstream (sewer) side of the valve. This allows continued use of the above grade fixtures, while protecting below grade areas from flooding.

CRITICAL INSTALLATION DATA:
The installer must abide by one critical MINIMUM dimension. This is the distance from the top of the horizontal drain line, where the FLOOD-GATE® is installed, to the top of basement floor drain. (See FLOOD-GATE® Valve Testing Instructions Illustration for minimum bury depth) An additional two (2) inches more than this minimum is suggested, so that the top of the valve cover will be situated 2” below the pit cover. The FLOOD-GATE® valve must have a stable support block between the base of the valve and the bottom of the pit. The optional FLOOD-GATE® pit is regularly furnished with an integral support block.

 FACTORY TESTED:
The FLOOD-GATE® VALVE must be properly installed with the proper direction of flow (as indicated by the arrows on the valve) to ensure proper functioning. Each FLOOD-GATE® valve has been thoroughly inspected and tested at the factory. If the valve is damaged during shipment, or if any service to the valve is necessary, return the complete valve to the factory for repair or replacement. DO NOT attempt to disassemble or repair the FLOOD-GATE® Automatic Backwater Valve in the field.
Installation Images:
View of The Flood-Gate Automatic Backwater Valve Figure No. 7140

View Looking Into Pit with The Flood-Gate Automatic Backwater Valve Figure No. 7140 installed

 The Flood-Gate Automatic Backwater Valve Figure No. 7140 Installed in Concrete Pit
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