Thru Hull Scupper AISI 316 Stainless Steel 1 1/4" (Variant)

Function and technical context

A thru-hull is the structural element that passes through the hull of the boat to allow the passage of fluids - cooling water, bilge, bilge evacuation or deck drainage - without compromising the watertightness of the boat. Made of AISI 316 stainless steel, an austenitic alloy with high resistance to marine corrosion, this 1 1/4" thru-hull offers much greater durability than brass or plastic versions in saltwater, brackish water and high humidity environments. The correct installation of this component is critical: a thru-hull in poor condition, cracked or with a deteriorated seal can cause a leak with serious consequences for the safety of the boat. Its design with a collar Integrated ensures a firm seat against the hull and facilitates assembly with associated bottom valve or seacook.

When to replace this part?

The most common symptoms that indicate the need to replace a thru-hull include the appearance of surface rust or pitting on the body of the fitting, water leaks around the tightening collar, difficulty closing the associated bottom valve or visible deformation of the threads. At each docking or seasonal maintenance, it is advisable to visually inspect all the boat's thru-hulls, checking the state of the sealing with nautical putty and the integrity of the internal and external threading. Replacing a damaged thru-hull preventively on land is a simple and economical operation that avoids emergency situations in navigation, where repairing a water leak may not be feasible.

Compatibility table