Outlet taking the branch as an NPT threaded connection. Common on instrument and drain connections.
| Standard | MSS SP-97 (weldolet, thredolet, sockolet, elbolet, latrolet) |
|---|---|
| Run pipe size | 1/2" – 48" |
| Branch size | 1/2" – 12" |
| Pressure class | 3000# / 6000# / 9000# (threaded and socket weld), STD–XXS (butt weld) |
| Material | ASTM A105, A350 LF2, A182 F304/F316, F11, F22, A694 F52/F60/F65 |
| Connection | BW (weldolet), NPT threaded (thredolet), socket weld (sockolet) |
| Certification | EN 10204 3.1 / 3.2, PMI, dimensional check |
Selection and ordering notes
Olet type fittings take a branch from the main run and provide a reinforced connection without using a tee. Weldolet serves butt weld branches, sockolet socket weld and thredolet threaded branches.
Selection follows the size and schedule of both the run and the branch, so state both on the order. See when to use a flanged connection for the details.
Outlet taking the branch as an NPT threaded connection. Common on instrument and drain connections.
Dimensions and tolerances are given in the original drawing and table on the technical document tab. Material certificates (EN 10204 3.1 / 3.2) and inspection reports are supplied with the order file.
