Plumbing trap after-valve

Details Plumbing trap after-valve Plumbing trap after-valve

E - Fixed Constructions

03

C

E03C 1/22 (2006.01) E03C 1/126 (2006.01) E03C 1/30 (2006.01) F16K 3/28 (2006.01) F16K 13/08 (2006.01) F16K 13/10 (2006.01)

Patent

CA 2461222

In one aspect, the invention is directed to a plumbing drain system comprising a drain line and a valve. The drain line has a drain inlet. The valve is situated in the drain line, spaced from the drain inlet. The valve is positionable between an open position wherein liquid flow is permitted through the drain line and a closed position wherein liquid flow is substantially prevented through the drain line, so that a portion of the drain line upstream of the valve can hold a drain line cleaning solution for a selected period of time.

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