The easiest way to do so is by grabbing some spare change: a quarter, nickel, and dime. While wrenches and other tools can scratch or cause damage to the housing of the faucet, the aerator key was designed specifically for easy, non-abrasive installation and removal of the aerator… Shop for Aerators at Ferguson. 2 Line up the teeth of the key with the notches of the hidden aerator. If your faucet is roughly the size of a nickel, it needs a regular-size aerator. The first thing to determine is if you need female or male threading. Typical "Regular" size for a faucet aerator is 15/16" male threaded or 55/64" female threaded, while "Junior" size is 13/16" male threaded or 3/4" female threaded. Male aerators have the threads on the outside, female aerators … The screens have a tight weave and eventually clog up with sediment. A pressure compensating flow controller in the aerator keeps the flow rate even over changing water pressures. When this happens, you need to replace the aerator to increase the flow of water out of the faucet. We include 1 - special aerator key with each order. This aerator fits standard cache faucets (hidden aerator fauecets) and is available in the following sizes… Cache® Aerators have been used by OEMs since 2006. You can measure your faucet, or use a simple shortcut using coins. DANCO Aerator Key has an aerator wrench for internal or external threads, as well as 4 sizes of keys that fit most faucet brands. You can easily identify the size of a cache aerator by using a quarter, dime, nickel and penny. 3 Twist to loosen the aerator. How To Replace Your Hidden Aerator MULTI-FIT AERATOR KEY A Regular/Standard size aerator … A male aerator has threads on the outside of the aerator whilst a female aerator has the threads on the inside of the aerator. Size: Aerators typically come in one of two sizes: regular (usually 15/16” Male or 55/64” Female) and junior (usually 13/16” M or 3/4” F). Large size – 15/16 inch diameter aerator; Medium size – 55/64 inch diameter aerator; Small size – 13/16 inch diameter; Typical kitchen faucets use either a male or female threaded aerator. The edges from the flat side of the coin should still be visible from the top when the coin is placed underneath an aerator. You'll compare these coins to the size of the threaded end of your existing aerator (or the outlet of the faucet spout itself). To replace the aerator, you need to measure it so you know what size … Male and female aerators fit on different types of faucets. In the United States, the thread size … Aerators are essentially metal screens placed inside an aerator cap. Some faucets use a smaller "Tom Thumb ®" metric-size aerator… Regular Aerator Inside 1 Using the above measurements, find the right key size for your hidden aerator. Ferguson is the #1 US plumbing supply company and a top distributor of HVAC parts, waterworks supplies, and MRO products. 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