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The 3M 7000045004 is a hose end adapter designed to connect a 1-inch threaded hose to a 1-1/4-inch internally threaded hose. This fitting serves as a transition piece between two differently sized hose connections, allowing technicians to join hoses that would otherwise be incompatible. It is a straightforward mechanical fitting suited for use in fluid transfer, dust collection, vacuum, and similar hose-based systems. Licensed tradespeople and service professionals install this adapter when adapting existing hose assemblies to equipment with different port sizes.
This adapter is well suited for applications where a 1-inch hose must mate with a 1-1/4-inch internal hose thread. Typical use cases include shop vacuum systems, portable dust collectors, and industrial or commercial fluid-transfer setups where hose sizes vary between equipment and accessories. It is sold individually and is appropriate for both field service and shop maintenance environments.
Designed as an OEM-style hose end adapter for systems requiring a transition between 1-inch and 1-1/4-inch internal hose thread fittings.
Installation is typically performed by HVAC technicians, plumbers, or maintenance professionals working with hose-based systems. Before installing or removing any hose fitting, shut off flow to the line and depressurize the system fully. Hand-tighten threaded connections first, then snug with an appropriately sized wrench — do not overtighten, as this can damage threads. Inspect threads on both the hose and the adapter for wear or damage before assembly.
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