If you have a leaky kitchen mixer, you should know how to adjust its supply line size. If you do not have the right size, you could end up with an elongated line, which is not a good thing. If you are not sure how to adjust the line, here are a few tips to get you started. The first thing you should do is measure the faucet's intake port, then measure the distance between it and the angle stop valve discharge port. This measurement will be used to determine the size of the supply line.
Supply line's size based on the faucet's size and its number of functions
The size of the supply line for a kitchen faucet varies based on the faucet's size and its number of functions. Generally, a half-inch line will accommodate approximately 12 gallons of water. For your reference, domestic water pressure is 90 psi. A one-inch line will accommodate up to a two-inch faucet. However, you should be aware that this size is not enough for a single-handle faucet.
Angle stop size depends on the type of pipes
The standard kitchen faucet supply line size is 1/2 inch. This size is enough for adequate water flow. It ends with a shutoff valve, which dictates the size of the connectors on the kitchen faucet hose. For example, a Kohler faucet's supply line uses a 1/2-inch supply tubing, and then connects to it with a 3/8-inch compression fitting. The angle stop size depends on the type of pipes.
Different sizes of water supply line
A new faucet requires a different water supply line than an existing one. You can buy one that is 3/8-inch-thick, or even a metric-inch-thick hose. There are different sizes for hot and cold water lines. If you need an extra long one, you can buy a supply line extension. These include both a male and female connection. A metric version of a kitchen faucet supply line is available for convenience.
Regular faucet requires a 15/16" M aerator
When choosing a new faucet, make sure to know the exact size of the supply line. Most faucets come with an aerator with an outside and an inside thread. These are the two sizes that matter most. A regular faucet requires a 15/16" M aerator, while a junior faucet will use a 3/4" F aerator. When measuring copper tubing, it is important to know its outside diameter, which is measured in millimeters. Common sizes are 15mm, 28mm, 35mm, and 54mm. You can also measure your copper hose by using coins to be sure of which one is appropriate for your faucet.
Before you purchase a new kitchen faucet, be sure to measure the size of the existing pipes. The branch lines for sinks usually measure 1/2-inch and terminate with a shutoff valve. The size of the faucet's hose connector depends on this size. For example, if you have a 3/4-inch copper supply pipe, then you should choose a 1/4-inch faucet hose with a 1/2-inch slip joint.
