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 ¼ x ¾, Nuts - ¼ 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”

Dimensions: Width: 10" (254 mm), Length: 15.5" (394 mm), Height: 11" ( 280 mm )

Certifications & Approvals:
IAPMO R&T, ANSI, SCC, UPC Approvals
(printable documentation - Adobe Acrobat .pdf)

All Valves (Adapt-A-Valves and Backwater Valves) in both ABS or PVC are Schedule 40.

ACCESS BOX DIMENSIONS: The overall width of the open base of the black PE 2013 Access Box is 14-7/8" X 20" and steps down to 11-1/8" X 14-7/8" at the top of its 16" height. The removable gray high density polyethylene (plastic) top access panel is 10-7/8" X 14-1/2". The access box top is held in place by two 1/4" Plastic Push Fasteners.

Additional Fullport Backwater Valve Specs

CLICK HERE FOR AN ADDITIONAL FULLPORT BACKWATER VALVE SPECIFICATION DRAWING (IMAGE)

Additional Adapt-A-Valve Specs

CLICK HERE FOR AN ADAPT-A-VALVE SPECIFICATION DRAWING (IMAGE)