GROCO Bronze Pipe Nipple - 2-1/2" NPT

The GROCO Bronze Pipe Nipple – 2-1/2" NPT is a marine-grade fitting designed for serious boaters and commercial water operators who require reliable performance in through-hull applications and seawater plumbing systems. This essential component connects your through-hull fitting to raw water intake systems, effectively managing the constant pressure and corrosive salt spray that can damage inferior fittings.

Manufactured from durable bronze alloy, this nipple is specifically chosen for its resistance to corrosion from saltwater and seawater cooling systems. Its robust design ensures it can withstand thermal cycling and vibration from engine cooling loops, preventing cracking or leaking, which is critical for maintaining safety while underway.

Experienced captains and marine mechanics trust GROCO fittings for applications such as engine cooling systems and saltwater washdown circuits. The 2-1/2" NPT (National Pipe Thread) connection adheres to standard industrial marine specifications, allowing for seamless integration with existing through-hull fittings, strainers, and raw water manifolds found on vessels of various sizes.