Nipple PP 3" male thread 6 bar black - 0121506

Nipple PP 3″ male thread 6 bar black

Rated to 6 bar and tolerating temperatures up to 60 °C, this 3″ polypropylene nipple provides a robust male-to-male BSP threaded connection for large-bore pool and water treatment pipework. Its full polypropylene construction makes it inherently resistant to chlorine, salt water, and the chemical dosing media commonly found in automated chlorination systems. At 3″ bore, it suits high-flow applications such as the inlet and outlet connections on commercial filters, dosing units, and bypass manifolds.

Material & chemical resistance

Moulded in solid polypropylene, this nipple resists corrosion from pool chemicals, brine, and chlorine-based dosing solutions that would quickly degrade iron or brass fittings. The black pigmentation is UV-stabilised, making it suitable for partially exposed above-ground pipework without risk of colour fade or embrittlement over time.

Thread & pressure rating

Both ends carry a 3″ BSP male thread, allowing the nipple to bridge two female-threaded components — valves, unions, tank ports, or pump housings — without adaptors. The PN6 (6 bar) pressure rating is the standard for 3″ polypropylene fittings at working temperature, comfortably covering the operating pressures of pool filtration and chemical dosing circuits. Apply PTFE tape or an appropriate thread sealant to the threads before installation to ensure a leak-free joint.

Typical pool & dosing applications

This nipple is widely used in automated chlorination and salt-electrolysis systems to connect dosing cells, bypass housings, and inline injectors into the main return line. It is equally at home in large residential or commercial pool plant rooms wherever a corrosion-proof, chemically inert 3″ male-thread connector is required.