John Guest Fitting CI320816fs 3/4 Bsp Female x 1/4 Push Fit. This is a genuine John Guest product, certified by NSF, known for being strong and reliable. It's a pipe and tube connector that acts as a converter/reducer, featuring a 3/4" BSP Female connection and a 1/4" Push Fit connection. It is mainly used in applications such as breweries, foodstuffs, pubs, and other liquid transfer systems. It is also suitable for water pipes in side-by-side refrigerators, aquariums, reverse osmosis systems, vending machines, and for inert air and gases.