THROUGH-HULL FOR 29 MM HOSES.

Function and technical context

The through-hull for 29 mm hoses is a structural accessory that allows the watertight passage of fluid pipes through the hull of the boat, guaranteeing the tightness of the assembly and preventing the entry of water into the interior of the boat. It is usually integrated into cooling systems, drainage, bilge emptying, seawater circuits or wet exhaust installations, acting as a transition point between the interior piping and the exterior of the hull. Its correct installation and condition are critical for safety on board: a damaged, poorly adjusted thru-hull or one with compromised sealing can cause progressive water entry or even sinking in the event of total failure. The diameter of 29 mm determines compatibility with the corresponding hose, so it is essential to verify the measurement before replacement.

When to replace this part?

The most common symptoms that indicate the need to replace a thru-hull are the presence of moisture, dripping or scale marks around the point of penetration into the hull, difficulty opening or closing the associated valve, or the detection of corrosion, cracks or deformations in the body of the accessory. It is recommended to visually inspect all thru-hulls at each docking or seasonal maintenance, especially on vessels with several years of service or exposed to high salinity environments. Preventively replacing this element in the event of any sign of deterioration avoids serious navigation risks and repair costs much higher than those of the piece itself.