"Good item, good quality, does exactly what it should and that is to stop the back flow of water. I would recommend this product.
Needed quite a few of these to fit in a block of flats but each Screwfix only stocks 1 of these at a time which is very disappointing and meant that I had to pay more money elsewhere and waste a lot of time locating them."
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Review 3 for McAlpine T28M-NRV 40mm Non-Return Valve White