John Guest Fitting - CI3208U7S 1/4" PF x 7/16 Female Universal Tap Adaptor John Guest 1/4" Drinking Water Tap Push Fit Adapter Allows you to connect 1/4" water filter pipe to 7/16" UNS water tap Fits most type of Water Filter Taps This John Guest fitting will allow you to fit 1/4" pipe onto a standard 7/16" (11mm) drinking tap fitment. The push fit connector makes life extremely easy especially if working in confined spaces. It will remove the need for the nut and collet. Suitable for drinking water purification systems, water conditioners, ice makers, drinks coolers and RO Units. It is suitable for use with both hot an cold liquids.