The screens have a tight weave and eventually clog up with sediment. You can measure your faucet, or use a simple shortcut using coins. This aerator fits standard cache faucets (hidden aerator fauecets) and is available in the following sizes… 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). A Regular/Standard size aerator … You can easily identify the size of a cache aerator by using a quarter, dime, nickel and penny. When this happens, you need to replace the aerator to increase the flow of water out of the faucet. In the United States, the thread size … A male aerator has threads on the outside of the aerator whilst a female aerator has the threads on the inside of the aerator. DANCO Aerator Key has an aerator wrench for internal or external threads, as well as 4 sizes of keys that fit most faucet brands. A Standard size Cache Aerator (M24 x 1) is the size … For cache aerators (hidden aerators) 2) Determine if you need male or female (if you need a housing) NRG carries Dual threaded aerators that will fit both male & female standard size … A pressure compensating flow controller in the aerator keeps the flow rate even over changing water pressures. 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… Aerators are essentially metal screens placed inside an aerator cap. Cache® Aerators have been used by OEMs since 2006. 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). We include 1 - special aerator key with each order. There are four different sizes of Cache® aerators and are metric in size. How To Replace Your Hidden Aerator MULTI-FIT AERATOR KEY Male and female aerators fit on different types of faucets. 3 Twist to loosen the aerator. Shop for Aerators at Ferguson. 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. 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. If your faucet is roughly the size of a nickel, it needs a regular-size 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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