Female Hose Adapter Brass 3/8" - 13 mm

Function and technical context

This female brass fitting acts as a connection element between a rigid threaded pipe and a flexible hose, allowing the watertight transition between both types of conduction within the fluid circuits on board. With a 3/8" female thread and a 13 mm hose barb, it is commonly used in seawater cooling systems, bilge circuits, auxiliary fuel supply and any nautical installation where it is necessary to attach a flexible hose to a threaded fitting. Brass offers much higher resistance than iron or steel in saline marine environments, being the reference material for hydraulic accessories in pleasure boats and work boats. A deteriorated, leaking or poorly adjusted connection can cause loss of flow, entry of water into unwanted areas or interruption of coolant flow, with consequent consequences for the engine or associated equipment.

When to replace this part?

The most common symptoms that indicate that a rubber fitting needs to be replaced are: presence of moisture or traces of lime in the area of the nipple, hose that comes loose easily when pulled, visible dripping at the thread-fitting junction or greenish corrosion on the brass body that compromises the tightness. It is recommended to visually inspect all pipe connections and accessories during each seasonal maintenance, especially after wintering in very humid environments. Preventively replacing a low-cost accessory like this avoids more serious and costly breakdowns—such as engine overheating due to lack of coolant—that could leave the boat inoperable at sea.

Compatibility table