Steel Adapter, 1/4-18 Female NPT To 1/2-20 Male JIC 37 deg Flare, 90 deg Elbow

For that hookup, it matches what you described. One side is 1/4-18 female NPT (NPTF internal pipe) and the other side is 1/2-20 male JIC with a 37 degree flare, and it’s a 90 degree elbow.

This Eaton Aeroquip adapter is suitable for marine applications. Be sure to consult the fluid compatibility document to confirm it'll hold up with the specific fluids you're using.

Pulp and paper is one of the specific applications this adapter is built for, along with chemical processing, food and beverage, marine, military, and offshore drilling. Those aren't just broad categories thrown on there, that list reflects real-world environments where corrosion resistance and reliable sealing matter. The 37-degree JIC flare on the male end combined with the female NPT connection gives you a solid mechanical seal that holds up where vibration and fluid exposure are ongoing concerns.