Typical Installation

Retrofit Installation

Testing the Unit

Backwater Valve Specifications

Access Box Specifications


Access Box Specifications

Model Number #2013

The Mainline Access Box was designed to make maintenance of the Mainline Fullport Backwater Valve more convenient for the consumer and contractor alike. The Access Box is large enough to cover the valve completely and is designed to allow more than adequate accessibility to service the valve and its components. Sitting flush with the floor, the Access Box has an easy to remove cover held in place by two bolts. Remove these bolts and lift the cover off using the 'finger holes' designed for ease convenience. After servicing the valve, simply put the cover back in place and replace the bolts. No more wrestling with flimsy sheet metal cover plates!

Each Access Box has two 'thumb tabs' that can act as stabilizers when pouring the concrete floor around the box. The 'thumb tabs' will act as a reinforcing factor that will keep the box in place should it end up in a heavy traffic area.

Intended to be used as an access opening for the Mainline Fullport Backwater Valve Model # 4963. (May be used for other access applications example: Cleanouts, irrigation etc.)

Reading Plate
Maintenance instructions for building owner (Reading plate may be customized for distributor)

Body and Lid High-density polyethylene (plastic)
Bolts Zinc coated 1/4 x 1 1/2 in.

Approximately 5 lbs.

Length 20 in. (508 mm)
Width 12.5 in. (318 mm)
Height 16 in. (406 mm)

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