Union Elbow – Tube Socket Weld (Metric) Union Elbow – Tube Socket Weld (Metric) Part NoTTubeO.D. (mm)E Small BoreBLFXWork. Press, (psig)FAV-M10TSW-SS107.47.924.614.316.58100FAV-M12TSW-SS129.59.729.717.520.216820FAV-M14TSW-SS1410.410.031.720.623.86930FAV-M16TSW-SS1612.710.434.720.623.86190