Waterway Plastics is proud to design, engineer & produce our quality line of products right here in the USA, using only premium nsf approved materials & meeting all certifications & standards, at our 460,000 sq.'. Facility in Oxnard, ca. Waterway. Committed to innovation & excellence since 1973 barb adapter, 1-1/2" barb x 1-1/2" Male pipe thread; part#: 417-6150