Mainline Fullport Backwater Valve Specifications

Model number #4963

References
CAN/CSA-B181. 1-M90

Classification
Type I - intended for use in horizontal pipe runs to floor drains, building drains, sewers, holding tanks, etc.

Application Backwater valves should be used in building drainage systems whenever a risk of flooding due to sewer surcharge, back up, or failure exists.

• Backwater valves must be installed to ensure access for inspection or maintenance.
• Periodic inspection is important to maintain satisfactory performance of the backwater valve.
• The building owner must maintain and keep backwater valves in proper working order.

Component
Body, Lid, Gate, Cleanout plug
Acrylonitrile-Butadiene-Styrene (ABS) Plastic

Bolting System
Bolts
Stainless steel 1/4 x 3/4
Nuts
1/4 stainless steel

Gate Seal
Neoprene rubber ( Buna 50 durometer #241 )


Lid Gasket
Flat-section closed-cell gasket
Neoprene 3/16 x 3/8 (1220 RL BL x 1)

Floatation Devices
Closed-cell cross-linked polyethylene (PEX) foam
"Boltaron Polyethylene"

Home Why a Mainline Valve How it Works Installation Links Contact Us Privacy Policy Mainline Backflow Products Canadian Home Builders' Association Mechanical Contractors Association of Alberta