MMM 160366 Swivel Union Tee, 3/8 in Nominal, Female NPSM, Steel
Features
- NPSM fittings include an inverted 60° cone inside an internally threaded swivel union nut
- Male NPTF fittings that have a 30° internal chamfer that make a 60° inverted cone, will mate with NPSM swivel unions
- The mating male threads must include an inside chamfer on the end of the fitting that mates with the inverted cone
- Threads are for clamping force only
- The sealing occurs on a small radial section between the male fitting internal chamfer and the swivel union inverted cone
- NPT and NPTF pipe threads seal by wedging the tapered threads through deformation into each other
- Both of these threads require thread sealants to complete a seal
