During the cold snap we ended up with the filter housings cracking (see below). Leaving aside the need to stop this happening again I need to plumb in the new filter housings.

 

I'd previously plumbed everything in using compression fittings as I find it easier to work with. The housings have a 1" female thread. When I plumbed them before I only just got away without wrecking them. I used a brass 1" male compression connector into the plastic 1" female on the filter housings and I'm pretty sure it gubbed the thread but just managed to stay watertight.

 

I now need to replace the whole housing (both black and blue bits). Is there a better way to do this which reduces the risk of wrecking the plastic thread on the filter housings or do I just need to be more careful?

Did the housings have rubber washers ..?? 1” is unusual - most have 3/4”..?

 

Wherever you go from threaded polypropylene to brass you will have an issue. Alternative is to put Hep2O push fit 3/4 male fittings onto them, or if you can’t get those to seal then use a 3/4 nylon or ABS nipple and put a female Hep2O tap connector onto that. 

JG Speedfit do a 3/4 in acetal but I think it’s a face flange seal so only works if the filter housing is perfectly flat. 
 

Also speak to Sterner as they do filter housings with brass inserts. 
 

 

 

+1

 

Many filters take standard size cartridges and  models with brass inserts are available (even on eBay).

 

 

Just checked and it was these ones we installed and they come with up to 1” brass inserts. Fitted them with Tectite sprint push fits in brass as it’s all exposed copper. 
 

https://store.sterner.co.uk/products/aquafilter-10-filter-housing-c-w-1-2-ports?variant=32896725712950

 

Thanks both