"Having been sold a poor bar mixer by Victoria Plumb (they say it's OK at 0.1bar which is true if you like been dripped on). This pump is made by Salamander and they only supply Screwfix with 2 pumps; 1.5 & 2.0 bar. So quite why Screwfix have the same pump with 2 prices is a bit of a mystery. Salamander state that the noise level is 54dB not the usual 70+dB you find on the cheap pumps. I've put it in the airing cupboard and it's only as loud as the heating pump. Grab yourself a bargain!"