Stainless Socket-Welding Union is a stainless steel high pressure union fitting for socket weld end piping systems.

Standard	MSS SP-83
Pressure Class	High pressure union fittings
Material	A182 F304/L, F304H, F316/L, F316Ti, F321, F5, F11, F22, F51, F55, F91
Connection	Socket weld end

Nominal Pipe Size (in)
1/8 to 3

Dimensions are listed in millimeters. Where two values are shown, the catalog lists both values in the same dimension column.

Nominal Pipe Size (in)	Pipe End A (Min)	Socket Bore Dia B	Socket Wall C (Min)	Water Way Bore D	Laying Length E	Male Flange F (Min)	Nut G (Min)	Threads per 25.4 mm H	Bearing J (Min)	Depth of Socket K	Length Assembly L (Nom)	Clear Assembly Nut N
1/8	21.8	11.18 / 10.67	3.18	7.59 / 6.07	22.4 / 19.1	3.18	3.18	16	1.24	9.7	41.4	38
1/4	21.8	14.61 / 14.10	3.30	10.01 / 8.48	22.4 / 19.1	3.18	3.18	16	1.24	9.7	41.4	38
3/8	25.9	18.03 / 17.53	3.51	13.28 / 11.76	26.9 / 20.6	3.43	3.43	14	1.37	9.7	46.0	38
1/2	31.2	22.23 / 21.73	4.09	16.56 / 15.04	26.9 / 20.6	3.68	3.68	14	1.50	9.7	49.0	46
3/4	37.1	27.56 / 27.05	4.27	21.69 / 20.17	31.8 / 25.4	4.06	4.06	11	1.68	12.7	56.9	57
1	45.5	34.29 / 33.78	4.98	27.41 / 25.88	34.3 / 26.2	4.57	4.45	11	1.85	12.7	62.0	65
1-1/4	54.9	43.05 / 42.55	5.28	35.81 / 34.29	40.6 / 32.5	5.33	5.21	11	2.13	12.7	71.1	78
1-1/2	61.5	49.15 / 48.64	5.54	41.66 / 40.13	42.2 / 34.0	5.84	5.59	10	2.31	12.7	76.5	87
2	75.2	61.62 / 61.11	6.05	53.26 / 51.74	45.5 / 37.3	6.60	6.35	10	2.69	15.7	86.1	103
2-1/2	91.7	74.45 / 73.81	7.67	64.24 / 61.19	61.7 / 52.1	7.49	7.11	8	3.07	15.7	102.4	123
3	109.2	90.42 / 89.79	8.31	79.45 / 76.40	63.8 / 53.6	8.26	8.00	8	3.53	15.7	109.0	140

Stainless Steel High Pressure Fittings

Stainless Socket-Welding Union