OK probably dumb question. I've been replacing fitting the utility room waste with 40mm pipe and compression joints, but one spot I need a 135 degree pushfit.
Got one off Ebay advertised 40mm but it's stamped '1.5" / 38mm" and I can't get it on the pipe. Should it fit? Those 2mm make all the difference - I've tried chamfering the edges but it won't go.
I thought all 40mm solvent weld/compression/pushfit pipe and fittings were pretty much interchangeable.