Perko 1-1/2" Thru-Hull Fitting f/ Hose Bronze Made in the USA

The Perko 1-1/2" Thru-Hull Fitting for Hose in Bronze (MPN 0350008DPP) is a cast bronze seacock designed for through-hull applications where dependable saltwater service is non-negotiable. This is the workhorse fitting found on commercial vessels, fishing boats, and cruising sailboats where reliability in harsh marine environments determines whether systems function or fail. Made in the USA, this bronze thru-hull fitting handles water intake, discharge, and raw-water cooling lines on vessels up to 2 inches of hull thickness with the regular-length design.

The fitting features a machined flange grooved to retain bedding compound, with internal threading that extends approximately 3/16 inch from the flange to receive hose barb fittings. Bronze construction resists corrosion in saltwater environments far better than ferrous metals, and the material's machinability allows for precision fit without galling or seizing issues common in stainless steel applications. The 1-1/2" bore accommodates standard marine hose sizes, and the design accepts both plain and chromed brass barbed adapters depending on finish preference and system requirements.

This fitting is essential for weekend anglers running cabin cruisers with enclosed heads, serious offshore fishing boats with multiple through-hull penetrations, and cruising sailboats where redundant water systems demand proven hardware. The regular-length version accommodates typical single-skin or cored hull sections up to 2 inches thick; Perko also offers a short-length variant for thin-shell hulls up to 5/8 inches if needed separately. Bronze thru-hulls of this design have been industry standard for decades because they hold bedding compound reliably, resist electrolytic corrosion when properly installed with isolation washers, and can be serviced or replaced without special tools.