Need help identifying backwater valve

[Donny Jilek]

Valve is from a house that was built mid 70s. Need help identifying brand and if still around. Thank you in advance

 

[Fitter30]

Have you checked with your company service dept?

 

[Sponsor]

 

[Tuttles Revenge]

https://www.mifab.com/products/backwater-valve-with-pvc-flapper/

this is my first thought

 

[Reach4]

this is my first thought

My first thought is this guy is a collector.

My second and third thoughts were that his basement flooded and ....

 

[Donny Jilek]

My first thought is this guy is a collector.

My second and third thoughts were that his basement flooded and ....

I got some water in the basement, the plumber went through the valve and the flapper was corroded but cleared the main drain

 

[Reach4]

Flapper type sewage check valves are nearly guaranteed to leak. These are sometimes called normally closed. Debris will hold the flapper open after a while.

There is a better type called a normally open backwater valve that only closed in backup situations.

The gold standard in sewer backup protection is overhead sewers. Yes, it costs. There is another system that puts a pit in the yard. That pit has a normally open backwater valve, and a sump pump. The sump pump outputs injects downstream of the backwater valve.