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The BK 403-360 is a Schedule 80 PVC nipple measuring 1/2 inch in diameter by 36 inches in length, designed for the transport of water and other compatible liquids in pressurized piping systems. Threaded to NPT (National Pipe Thread) standards and sized to IPS (iron pipe size) dimensions, it meets ASTM D1785 specifications for rigid PVC pressure-rated fittings. The heavier wall thickness of Schedule 80 construction provides added durability compared to Schedule 40 in demanding or higher-pressure installations. Plumbers, pipefitters, and irrigation contractors install this nipple when a full-length threaded riser or extension is needed between fittings, valves, or equipment connections.
This nipple is suited for residential and light commercial plumbing, irrigation, industrial fluid transport, and chemical handling applications where PVC is a compatible material. Its full 36-inch length makes it useful as a riser, a cross-pipe segment, or a cut-to-length supply run in situations where shorter nipples or pipe sections are not practical. Pipe thread compound or PTFE sealing tape must be applied to the threaded portions before assembly to ensure a leak-free joint.
Designed as an OEM-style replacement and standard-fit component for 1/2 inch NPT threaded fittings, valves, and couplings in Schedule 80 PVC piping systems.
Installation is performed by licensed plumbers or pipefitters following applicable IPC and local plumbing code requirements. Always depressurize and drain the system before removing or installing threaded nipples. Apply pipe thread compound or PTFE sealing tape to all male threads before hand-tightening, then wrench-tighten to a snug fit — do not overtighten PVC threads, as cracking can result. Avoid exposure to solvents, oils, or other fluids not rated for use with rigid PVC.
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