The Series 5503-SS 45-Degree Male NPT x Female NPT Street Elbow adapters, made from high-quality stainless steel, are designed for fluid and gas transfer systems that require secure, angled connections. These adapters feature male and female NPT (National Pipe Tapered) threads, which are a U.S. standard for tapered threads that ensure a leak-free seal when tightened. The 45-degree angle allows for easy direction changes in piping, making them ideal for space-constrained installations. Stainless steel construction provides durability and resistance to corrosion, making these adapters perfect for high-pressure applications. Available in various materials, including iron and brass for low-pressure systems, these adapters offer reliable performance and secure connections. The nominal pipe size is determined by measuring the thread diameter and subtracting 1/4".