Macerator noise comparison Saniflo vs Grundflos: Desperate to do the right thing!

[inashed]

I now have a new Grundfos Sololift2 WC-1 still in box. It looks like Since this is a swap out it looks like I need an additional Grundfos accessory in the form of a flexible pipe. The waste pipe installed is 22mm and the Grundfos was exit elbow 32mm (internal). Could I get some suitable reducers and flexible pipe from a plumbing supplies/DIY store or do I need to get the official accessory from Grundfos? I would need some hard plastic or nylon reducers (22-32 mm) to use with hose clamps?

 

[rpm]

I now have a new Grundfos Sololift2 WC-1 still in box. It looks like Since this is a swap out it looks like I need an additional Grundfos accessory in the form of a flexible pipe. The waste pipe installed is 22mm and the Grundfos was exit elbow 32mm (internal). Could I get some suitable reducers and flexible pipe from a plumbing supplies/DIY store or do I need to get the official accessory from Grundfos? I would need some hard plastic or nylon reducers (22-32 mm) to use with hose clamps?

All required adaptors are in the box.

 

[inashed]

All required adaptors are in the box.

The current install (looking from front of the toilet) has the exit on the right and waste pipe (22mm ID) traversing to the left (about 35cm) where it passes through the wall on its way to the soil stack (via a 22mm tube).

I need to connect the 32mm (ID) pipe elbow from the Grundfos macerator to the 22mm (ID) port. The adapters in the box will not do this. Whilst there is a 32-22 adapter it is designed to clamp to a hard 22mm pipe. I need a flexible 32mm ID pipe and a 32-32 adapter to connect between the elbow and the hard 22mm exit pipe.

 

[rpm]

The current install (looking from front of the toilet) has the exit on the right and waste pipe (22mm ID) traversing to the left (about 35cm) where it passes through the wall on its way to the soil stack (via a 22mm tube).

I need to connect the 32mm (ID) pipe elbow from the Grundfos macerator to the 22mm (ID) port. The adapters in the box will not do this. Whilst there is a 32-22 adapter it is designed to clamp to a hard 22mm pipe. I need a flexible 32mm ID pipe and a 32-32 adapter to connect between the elbow and the hard 22mm exit pipe.

What is the 22mm tube passing through the wall, copper or solvent weld plastic?
If solvent weld plastic then everything you need is easily available.

 

[inashed]

22mm tube passing through the wall is plastic, solvent welded, jubilee clip onto flexible pipe. I found a solution which is to use 22mm copper at the elbow, secured with jubilee clip, and then another jubilee clip onto the copper/flexible pipe (leaving the exit through the wall untouched). So you were right that required adapters were in the box, just needed a short run of 22mm copper.

 

[inashed]

Grundfos unit now installed and working. Certainly quieter than the old failing Sanitop2. Noise levels are acceptable.

What is the correct way to dispose of the old unit?