Washing machine drain extension

[Brixfix]

Hello, I'm new to this forum so please advise if I have posted this in the wrong section.

I am repositioning WM and will need to extend the drain hose. Is there any logical reason why I cannot use 21.5mm rigid pipe instead of the more usual corrugated flexible extensions? To my way of thinking, a dead straight run offers far less resistance to the pump and promotes a neater installation further down the line.

Air break would occur at sink waste exactly as it would if flexible pipe used.

Thanks for any opinions

 

[jj4091]

As long as the joint between the 2 pipes is sealed then I would not have thought you would have any problem.

 

[Brixfix]

Thank you jj4091. It will be well sealed because the drain water is indeed under pressure from the drain pump.