ᐅ Looking for a small trap for heating system

Created on: 16 Feb 2026 20:32
H
hauswurz10
I have a trap funnel under my wall-mounted heating boiler that leads through the wall into the garage using a PVC pipe (probably 40 or 50 mm (1.5 or 2 inches)).

I need to raise this drain if possible. Due to space limitations, this is not feasible with the old trap and bend. Is there a smaller alternative that serves the same purpose for cases like this?

I found something like this.



Can this also be used for the regular condensate drain of the heating system and the drain for the existing safety valve?

Some people think that this might be too small for the safety valve, as it may not handle the volume properly. Also, the water seal height might be too low.

I would appreciate product suggestions. There must be something that works, but I am not sure exactly what to look for.

The safety valve located in the left corner could potentially be connected differently or directly with a flexible hose for drainage.

Here are some pictures.



H
hauswurz10
17 Feb 2026 19:21
Thank you for your suggestions. One more question in between: if for various reasons no changes are made, would you replace the pipes and seals or leave everything as it is?

The 50mm (2 inches) PVC pipes and seals are more than 30 years old.

I’m not sure how often it actually happens in practice that the seals of such PVC pipes start leaking?