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The ANDERSON METALS CORP 54840-06 is a 3/8 inch flare space heater cap designed to seal and protect flare fittings on space heating systems. It threads onto a 9/16-24 fine thread flare fitting, providing a secure closure when a line is capped off during service, storage, or system decommissioning. This cap is a standard hardware item used by HVAC technicians and plumbers working on hydronic or gas-fired space heating equipment. It ships in a bagged pack of 5, making it practical for service trucks and supply inventories that require multiple caps on hand for routine maintenance calls.
This flare cap is suited for residential and light commercial space heating applications where 3/8 inch flare connections are present. Technicians use caps like this to protect open flare fittings from contamination, debris, or accidental discharge during system work. It is appropriate for use on refrigerant lines, fuel lines, or other fluid-carrying systems that terminate in a 3/8 inch flare fitting with a 9/16-24 fine thread specification. The bagged packaging keeps units organized and clean until installation.
Designed for use with 3/8 inch flare fittings using 9/16-24 fine thread, as commonly found in space heating system piping and related HVAC plumbing connections.
Installation is performed by qualified HVAC technicians or plumbers. Always isolate and depressurize the line before removing an existing cap or installing a new one. Hand-tighten first to confirm thread engagement, then snug with a wrench appropriate to the fitting size. Follow applicable IFGC or local mechanical code requirements when capping fuel-carrying lines.
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