ASME B16.11 Street Elbow | Threaded

December 8, 2021

Drawing & Function

The technical drawing of ASME B16.11 street elbow with one end MNPT and other end FNPT. H: outside diameter of band; B: minimum length of perfect thread; L₂: effective length of external thread; L: minimum length of male thread; G₂: minimum wall thickness; J: center-to-male end of street elbow; G₁: minimum wall thickness; A: center-to-female end of street elbow.

The ASME B16.11 street elbow is a 90° elbow with one end externally threaded (male NPT) and the other end internally threaded (female NPT). The male NPT end is to connect with a female-NPT screwed pipe while the female NPT end is to connect with a male-NPT screwed pipe. It changes the flow direction by an angle of 90 degrees. The screwed ends promote a rapid and convenient installation with mating pipes. They are available from sizes 1/8″ (NPS) through 2″ (NPS) in two pressure ratings: Class 3000 and Class 6000.

ASME B16.11 Forged Fittings (SW & THD)
90° Elbow	45° Elbow	Cross
Tee	Coupling	Half Coupling
Boss	Cap	Couplet
Street Elbow*	Plug*	Bushing*

*Click to view dimensions and masses of other ASME B16.11 fittings.

Dimensions & Masses of ASME B16.11 Threaded Street Elbows

NPS	A 3000#	A 6000#	J 3000#	J 6000#
1/8"	19	22	25	32
1/4"	22	25	32	38
3/8"	25	28	38	41
1/2"	28	35	41	48
3/4"	35	44	48	57
1"	44	51	57	66
1-1/4"	51	54	66	71
1-1/2"	54	64	71	84
2"	64	83	84	105

*Dimensions A & J: in mm.

NPS	H 3000#	H 6000#	G₁ 3000#	G₁ 6000#
1/8"	19	25	3.18	5.08
1/4"	25	32	3.30	5.66
3/8"	32	38	3.51	6.98
1/2"	38	44	4.09	8.15
3/4"	44	51	4.32	8.53
1"	51	62	4.98	9.93
1-1/4"	62	70	5.28	10.59
1-1/2"	70	84	5.56	11.07
2"	84	102	7.14	12.09

*Dimensions H & G₁: in mm.

NPS	G₂ 3000#	G₂ 6000#	B	L₂
1/8"	2.74	4.22	6.4	6.7
1/4"	3.22	5.28	8.1	10.2
3/8"	3.50	5.59	9.1	10.4
1/2"	4.16	6.53	10.9	13.6
3/4"	4.88	6.86	12.7	13.9
1"	5.56	7.95	14.7	17.3
1-1/4"	5.56	8.48	17.0	18.0
1-1/2"	6.25	8.89	17.8	18.4
2"	7.64	9.70	19.0	19.2

*Dimensions G₂, B, L₂: in mm.

NPS	L	Mass 3000#	Mass 6000#
1/8"	10	0.08	0.17
1/4"	11	0.11	0.23
3/8"	13	0.18	0.39
1/2"	14	0.25	0.57
3/4"	16	0.42	0.91
1"	19	0.65	1.38
1-1/4"	21	0.94	1.75
1-1/2"	21	1.42	2.65
2"	22	2.17	3.96

*Dimensions L in mm; Masses for Class 3000 & 6000 in kg.

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