Sorry but another question. How long should it take for a 6 litre cistern (MacDee Concealed Duo-Flush) to fill (with normal low pressure gravity fed cold fill - 15mm pipe, CW tank in loft so 2m or so head). At the moment it seems to be taking about 4-5 mins
5mins is not right. sounds like somebody fitted the low pressure restricter without reading the recomendations . I think on low pressure they require no restricter. I know the high pressure is required at above 60psi.
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