Review on Plumb Pak PP10-7 Air Valve - Enhanced SEO-Friendly Product Name by David Blackstock

The PP10-7 key supplied is a new chrome key with a loop which will not work with older Burnham Baseray radiators. The old style DUAL LOOP as shown in the picture is 0.5mm thinner which is necessary to fit in the old style air vents. The new vents have larger keyholes that allow for a thicker key. This is good as old keys break after a few uses (thinner and cheaper metal) BUT if you have old radiators you still need the old key.