4-inch centerset
A lavatory faucet designed to fit a three-hole sink where the hole spacing’s are 2 inches apart from the center hole or 4 inches apart (measured from center of hot handle to center of cold handle)
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AB1953
The California Assembly bill which requires all plumbing fixtures that convey or dispense water for human consumption (including all kitchen, bar, and lavatory faucets) in California to be lead-free. It defines lead-free as an average lead content of no more than 0.25% on the wetted surface areas of the product. AB1953 took effect in California in 2010. Today, the Safe Drinking Water Act requires all kitchen, bar, and lavatory faucets to be lead-free.
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ADA
Americans with Disabilities Act
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Aerator
A component located at the end of a faucet spout that controls flow rate.
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Air gap
The vertical space between a water outlet and the flood level of a fixture, such as between a faucet and sink rim.
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Angle Stop
Valves that are used to open/close the water supply to a plumbing fixture.
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Anti-Scald
A device used to prevent accidental scalding.
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Anti-Siphon
A device that prevents backflow of water into the plumbing system.
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ASME
American Society of Mechanical Engineers
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ASSE
American Society of Sanitary Engineering
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Back-to-back installation
Refers to two tub and shower valves installed on a shared wall. One valve gets installed normally with the hot supply on the left side of the valve and the cold supply on the right side. If installing a second valve on the shared wall the water supplies would be reversed, hot on the right and cold on the left. To remedy this, a valve that allows for back-to-back installation can have the stem of the cartridge rotated 180° so that the controls work the same.
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Basket strainer/sink strainer
A basket-shaped strainer that fits the sink drain, which allows water to run out while filtering debris such as food or other solids.
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Bonnet nut
A nut used to retain a control device such as a cartridge or stem.
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Bowl (toilet)
A water receptor that receives and dispenses liquid and solid waste.
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Bridge Faucet
A style of faucets that features exposed waterways above the surface.
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Cartridge
A component that allows for opening and closing of a water supply.
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CC
A copper tube connection which is joined by solder.
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Center-to-center
The measurement between the center of two adjacent points.
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Centerset
A lavatory faucet which mounts to a deck with 4 inch centers.
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Ceramic Disk
A faucet control component that utilizes ceramic disc technology.
