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The SharkBite UP520A5 is a 1-inch poly alloy barb insert PEX end plug sold in a 5-pack. It is designed to terminate cross-link polyethylene (PEX) tubing in hot and cold potable water systems. The fitting is manufactured from NSF-listed poly alloy, making it a low-lead replacement for traditional brass PEX insert fittings. Installation requires either copper crimp rings or a cinch clamp with the appropriate cinch tool. Once crimped, each fitting can be immediately pressure-tested to well over 100 psi, allowing fast workflow on the job site. Plumbers and pipefitters working in residential or light commercial plumbing install these fittings.
This end plug is suited for use in residential and light commercial hot and cold water distribution systems that use cross-link polyethylene tubing. It is a direct answer to California AB1953 and Vermont S152 low-lead compliance requirements, replacing brass insert fittings where lead-content regulations apply. Use with a cinch clamp or copper crimp rings per standard PEX installation practice. Each 5-pack provides enough fittings to cap multiple lines in a single service call or rough-in.
Designed for use with cross-link polyethylene PEX tubing for hot and cold water applications. Compatible with copper crimp rings or cinch clamp installations using a cinch tool.
Installation is performed by a licensed plumber in accordance with local plumbing codes and IPC guidelines. Shut off the water supply and depressurize the line before cutting and fitting. Use the correct crimp or cinch tool sized for 1-inch fittings to ensure a leak-free connection. Do not overtighten or disturb the fitting after crimping before completing the pressure test.
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