Straight Hose Barb Fitti ng 1/4 NPT M x 3/8 Barb

The DERALE Straight Hose Barb Fitting 1/4 NPT M x 3/8 Barb is a precision brass adapter designed to connect 1/4-inch NPT male threaded ports to 3/8-inch hose barb applications. This fitting serves as a critical junction point in fluid transfer systems where different thread and barb sizes must be reliably joined—from automotive cooling systems and hydraulic circuits to industrial equipment and marine applications. The straight configuration ensures direct, unobstructed flow without the complexity of elbow or offset designs.

Constructed from brass, this adapter provides excellent corrosion resistance and durability in demanding environments. The 1/4-inch NPT male thread is a standard industrial connection that accepts tubing with standard NPT (National Pipe Thread) taper specifications, while the 3/8-inch barb end accommodates hose with a 3/8-inch inside diameter. The barb design creates a positive mechanical grip when hose is slipped over the barb, reducing the likelihood of disconnection under pressure and vibration. The natural brass finish offers a balance of material integrity and visual identification typical of OEM and aftermarket cooling and fluid system applications.

This DERALE fitting is specified for technicians and system builders working with cooling systems, fuel lines, water circuits, and hydraulic assemblies where size transitions are necessary. The 1/4 NPT to 3/8 barb configuration addresses a common sizing requirement in mid-range fluid systems. It is essential to ensure hose clamps or crimping sleeves are properly applied when using barb fittings to maintain system integrity, particularly in high-pressure or high-temperature applications. This fitting supports both new installations and system repairs where original equipment specifications call for this exact port-to-hose transition.