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The BRASSCRAFT BC9441 is a chrome-plated dishwasher air gap fitting designed to prevent wastewater from siphoning back into the fresh water supply line of a dishwasher or similar appliance. The inlet accepts a 5/8 inch O.D. hose connection, and the outlet accommodates a 7/8 inch O.D. drain hose. The chrome-plated finish provides a clean, finished appearance at the sink deck. This fitting creates a physical break in the drain line, which stops contaminated water from flowing backward into the appliance water supply. It also provides a secondary drainage path if the drain hose becomes clogged, allowing water to discharge directly into the sink basin.
The BC9441 is used in residential kitchen installations where a dishwasher connects to a sink drain or garbage disposal. Many local plumbing codes require an air gap device at the point where the dishwasher drain line exits the appliance. This fitting mounts through a standard sink deck knockout or countertop hole, positioning the chrome cap above the sink rim for code-compliant installation. It is installed by licensed plumbers or qualified plumbing contractors during new dishwasher installations or drain line service.
Designed as an OEM-style replacement or new-installation air gap for residential dishwasher drain line applications where a 5/8 inch O.D. inlet and 7/8 inch O.D. outlet connection are required.
Installation is typically performed by a licensed plumber in accordance with local plumbing code requirements, including the International Plumbing Code (IPC) where adopted. Shut off the water supply and disconnect power to the dishwasher before beginning drain line work. The air gap mounts through a pre-drilled hole in the sink deck or countertop, with the cap positioned above the sink rim. Do not install the fitting below the flood-level rim of the sink, as this would defeat the backflow-prevention function of the device.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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