Blow off pipe

[pritch]

Hi

This pipe that comes off the upstairs megaflow tank and goes outside is soon to be inside the house now the extension is being built. 

It could be re routed but would be a big job chasing out five metres of brick work then around a door frame. 

I've never seen anything come out of it in 15 years and I'm tempted to leave it in the house behind a blank plate. 

What's the worst scenario? 

Could the contents of the tank end up in my new kitchen or is it just somewhere for air to escape if need be?

Thanks

[ProDave]

There are set rules on how long and how many bends it can have, and it must discharge somewhere, again within a set of rules.

 

The alternative is to connect it to an internal drain stack via a waterless trap.

 

You need a G3 qualified plumber to advise the possible alternative routes.

 

You can't just ignore it.  Worst case in the event of a fault it will be discharging scalding hot water to prevent the tank exploding when something has gone wrong and it is on the verge of boiling.

[BotusBuild]

+1. It's a safety feature and although you haven't seen anything come out of it, if something ever were to, it needs somewhere to go. G3 qualified plumber required.

[PeterW]

If you have never seen anything come out of it then I guess the tank has never been tested or inspected as you should see water come out of it when the PRV is tested....