This brass reducing male-to-male hex nipple adapter, also known as a reducing union or reducing nipple, is designed to connect two female-threaded pipes or components in a straight line while adapting two different thread sizes. It is commonly used as a reducing fitting to join dissimilar connections in mechanical and fluid systems.
Manufactured from solid brass, this adapter provides excellent resistance to corrosion, pressure, and high temperatures, ensuring reliable performance in demanding environments. The hexagonal center body allows easy tightening with a wrench, while the dual male threaded ends ensure a secure and leak-resistant connection.
One side typically features a standard pipe thread (NPT or BSP), while the other may use a flare-type thread, often found in gas lines, refrigeration tubing, air-conditioning systems, or automotive fuel applications. This design makes the adapter ideal for bridging different fitting standards without compromising sealing performance.
Widely used in plumbing, HVAC, gas, refrigeration, pneumatic, and automotive systems, this reducing hex nipple adapter ensures long service life and dependable operation in both residential and industrial installations.
TECHNICAL DETAILS:
| Specification | Details |
| Product Type | Brass male-male reducing hex nipple adapter (union) |
| Connection Type | Male-to-male threaded ends (different sizes) |
| Material | Solid brass (corrosion-resistant) |
| Pressure Rating | Suitable for high-pressure applications (varies by system) |
| Temperature Rating | Withstands high-temperature environments |
| Applications | Plumbing, HVAC, gas lines, refrigeration, automotive, pneumatic tools, compressors |
| Features | Hex body for wrench tightening, durable brass construction, leak-resistant reducing connection |






