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Thanks guys, @Dtwo Great idea, I had stuff to do around Botany today so dropped in the East Tamaki branch, and they had some. Unbranded, not Trident 102, but it'll do the job. I had a look at their website previously and no sanitation hose was listed, they told me their website was pretty outdated. @marinheiro HCD flow seems to be the same as the others, no sanitation hose above 38mm. At least I've learnt that what makes a sanitation hose odour permeation resistant is the added nitrile (at least 15% required). @Winter@waikiore It's a French boat, made for cheese eaters :D. Joke

Thanks marinheiro, but they only have sanitation hose up to 38mm / 1"1/2. That's why I went to General Marine Services who usually have that kind of stuff when the normal retailers don't, and they are out of stock. I thought it would not be too hard to find another place where I could find some hose, but apparently I was wrong... I'm not too keen to replace it by exhaust hose even if it's the last bit of hose and should only ever be full of seawater, and even if I can replace it in a few months by the proper stuff (not too keen to do that job twice). The closest replacement I could find f

Hi, I'm looking for a short length (less than half a meter) of 50mm diameter PVC sanitation hose - ideally Trident 101, 102 or similar, but the standard white PVC hose will do for now - to link the 'organ' (rigid PVC pipes forming a siphon break for black waters) to the 50mm valve on the skin fitting. I dropped in at General Marine today and they could not help with my request, and I could not find any online on NZ sites (easy to find overseas though, but having even a meter of that shipped will be pricey!). Would anybody know a place who would stock that, or have an offcut lying aro