Customer ratings

Works perfect

Many think it's the wrong size or that it doesn't even fit the Jabsco toilet. But it is the right size. Jabsco has 2 sizes for electric toilets, the smaller (since they have a hexler) and the large for the hand-flushed toilet. The description also says "Compatible with Jabsco 37010, 37055, 37255, 37045, 37245, 37075, 37275 series products". This is the smaller one. Perhaps SVB should indicate in the text that there is also a larger one for hand toilets?
Yes, you need them again and again, and that applies to all toilets. That's why I think it's great that they are not particularly expensive at SVB and are delivered very quickly - even to a marina abroad! Hence the 5 stars to SVB!

purchased by mistake I thought it was the large valve at the base of the toilet that prevents the backflow of waste water

Unfortunately, you need the part again and again, so another design solution should be found. Otherwise quite ok