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The ELMDOR ACOR0540-007-000 is a chrome plated vacuum breaker designed to prevent backflow by stopping siphonage at hose bibs, utility faucets, and similar potable water connection points. This device breaks negative pressure in the supply line before contaminated water can be drawn back into the system. The chrome plated finish provides corrosion resistance suited to exposed installations. Licensed plumbers and maintenance technicians install this type of device as part of code-compliant backflow prevention on low-hazard water outlets.
This vacuum breaker is used in residential and light commercial plumbing applications wherever hose thread connections are present and backflow prevention is required by local plumbing code. Typical installations include utility sinks, laundry faucets, outdoor hose bibs, and janitor service connections. The chrome finish makes it suitable for visible or semi-exposed locations where appearance matters alongside function.
Designed as an OEM-style replacement or new-installation vacuum breaker for standard hose thread outlets in residential and light commercial plumbing systems.
Installation should be performed by a licensed plumber in accordance with the applicable edition of the International Plumbing Code or local authority having jurisdiction. Shut off the water supply to the affected line before removing any existing fitting or making a new connection. Atmospheric vacuum breakers must be installed at least 6 inches above the highest downstream outlet as required by code — do not install downstream of any shut-off valve. Verify thread compatibility before installation to avoid cross-threading or leaks.
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