Screw-in tube unions with metric thread

M2B25 D

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Straight DILO tube unions are available with weld-on ends for applications where high vibration resistance is required. They are also available with weld-on end and screw-in thread. Different threads enable appropriate connections.
On request, we also supply unions in materials with standing temperatures from -270 °C up to +650 °C. Permanent tightness is guaranteed, no matter which version is selected!

Advantages & functions

With weld-on ends
Available for tube diameters from DN 3 up to DN 50
Temperature-resistant from -270 °C up to +650 °C
Available for pressures up to 1.000 bar on request
Also available in other DIN EN materials
Three-part union consisting of weld-on stub, clamping nut and weld-on screw stub

M1B Series for pressures up to PN 100:

DN	d₁	s	d₃	d₄	d₇	L₂	l₂	i₂	a₂	s₂	s₃	Order number
4	6	1,25	M 14x1,5	M 10x1	14	39	18	8	1,5	14	17	M1B 4
6	8	1,5	M 16x1,5	M 12x1,5	17	41	18	12	2	17	19	M1B 6
8	10	1,5	M 18x1,5	M 14x1,5	19	46	21	12	2	19	22	M1B 8
10	12	1,75	M 20x1,5	M 16x1,5	21	49	22	12	2	22	24	M1B 10
12	15	2	M 22x1,5	M 18x1,5	23	54	24	12	2,5	24	27	M1B 12
16	18	2	M 26x1,5	M 22x1,5	27	56	25	14	3	27	32	M1B 16
20	22	2	M 30x1,5	M 26x1,5	31	63	29	16	3	32	36	M1B 20
25	28	2,5	M 36x2	M 33x2	39	71	34	18	3	41	41	M1B 25
32	35	2,5	M 45x2	M 42x2	49	76	36	20	3	50	50	M1B 32
40a	42	3	M 52x2	M 48x2	55	82	39	22	3	55	60	M1B 40a
40	44	3	M 56x2	M 48x2	55	83	40	22	3	60	65	M1B 40
50	57	4	M 68x2	M 60x2	68	92	44	24	3,5	70	75	M1B 50

J1B Series for pressures up to PN 100:

DN	d₁	s	d₃	d₄	d₇	L₂	l₂	i₂	a₂	s₂	s₃	Order number
4	6	1,25	M 14x1,5	M 10x1	14	39	18	8	1,5	14	17	J1B 4
6	8	1,5	M 16x1,5	M 12x1,5	17	41	18	12	2	17	19	J1B 6
8	10	1,5	M 18x1,5	M 14x1,5	19	46	21	12	2	19	22	J1B 8
10	13,5	1,75	M 22x1,5	M 16x1,5	21	57	25	12	2	24	27	J1B 10
12	17	2,5	M 24x1,5	M 20x1,5	25	58	27	14	2,5	27	30	J1B 12
16	21	2,5	M 30x2	M 27x2	32	67	31	16	3	32	36	J1B 16
20	27	3	M 36x2	M 33x2	39	73	36	18	3	41	41	J1B 20
25	34	3,5	M 45x2	M 42x2	49	76	36	20	3	50	50	J1B 25
32	42	3,5	M 52x2	M 48x2	55	84	40	22	3	55	60	J1B 32
40	49	4	M 60x2	M 56x2	64	92	44	24	3,5	65	70	J1B 40
50	60	5	M 72x2	M 60x2	68	97	46	24	3,5	75	80	J1B 50

M2B Series for pressures up to PN 200:

DN	d₁	s	d₃	d₄	d₇	L₂	l₂	i₂	a₂	s₂	s₃	Order number
3	6	1,5	M 14x1,5	M 12x1,5	17	45	20	12	2	17	19	M2B 3
4	8	2	M 16x1,5	M 14x1,5	19	46	21	12	2	19	22	M2B 4
6	10	2	M 18x1,5	M 16x1,5	21	47	22	12	2	22	22	M2B 6
8	12	2	M 20x1,5	M 18x1,5	23	51	24	12	2,5	24	24	M2B 8
10	13,5	1,75	M 22x1,5	M 20x1,5	25	58	27	14	2,5	27	27	M2B 10
12	16	2,5	M 24x1,5	M 22x1,5	27	58	27	14	3	27	30	M2B 12
16	20	2,5	M 30x2	M 27x2	32	67	31	16	3	32	36	M2B 16
20	25	2,5	M 36x2	M 33x2	39	77	36	18	3	41	46	M2B 20
25	30	3	M 42x2	M 42x2	49	84	40	20	3	50	50	M2B 25
32	38	3,5	M 52x2	M 48x2	55	93	43	22	3	55	60	M2B 32
40	44	4,25	M 56x2	M 56x2	64	102	47	24	3,5	65	65	M2B 40
50	57	6	M 68x2	M 60x2	68	109	49	24	3,5	70	80	M2B 50

J2B Series for pressures up to PN 250:

DN	d₁	s	d₃	d₄	d₇	L₂	l₂	i₂	a₂	s₂	s₃	Order number
3	6	1,5	M 14x1,5	M 12x1,5	17	46	20	12	2	17	19	J2B 3
4	8	2	M 16x1,5	M 14x1,5	19	46	21	12	2	19	22	J2B 4
6	10	2	M 18x1,5	M 16x1,5	21	48	22	12	2	22	22	J2B 6
8	12	2	M 20x1,5	M 18x1,5	23	50	24	12	2,5	24	24	J2B 8
10	13,5	1,75	M 22x1,5	M 20x1,5	25	58	27	14	2,5	27	27	J2B 10
12	17	2,5	M 24x1,5	M 22x1,5	27	59	28	14	3	27	30	J2B 12
16	21	2,5	M 30x2	M 27x2	32	68	32	16	3	32	36	J2B 16
20	27	3,5	M 36x2	M 33x2	39	77	36	18	3	41	46	J2B 20
25	34	4,5	M 45x2	M 42x2	49	85	41	20	3	50	55	J2B 25
32	42	4	M 52x2	M 48x2	55	94	44	22	3	55	60	J2B 32
40	50	5,5	M 64x2	M 56x2	64	102	47	24	3,5	65	75	J2B 40

M3B Series for pressures up to PN 320:

DN	d₁	s	d₃	d₄	d₇	L₂	l₂	i₂	a₂	s₂	s₃	Order number
3	6	1,5	M 14x1,5	M 12x1,5	17	46	20	12	2	17	19	M3B 3
4	8	2	M 16x1,5	M 14x1,5	19	46	21	12	2	19	22	M3B 4
5	10	2,5	M 18x1,5	M 16x1,5	21	48	22	12	2	22	24	M3B 5
6	12	3	M 20x1,5	M 18x1,5	23	54	26	12	2,5	24	27	M3B 6
8	13,5	2,75	M 22x1,5	M 20x1,5	25	58	27	14	2,5	27	30	M3B 8
10	16	3	M 24x1,5	M 22x1,5	27	64	29	14	3	27	32	M3B 10
12	20	4	M 30x2	M 27x2	32	73	33	16	3	32	36	M3B 12
16	25	4,5	M 36x2	M 33x2	39	81	38	18	3	41	46	M3B 16
20	30	5	M 42x2	M 42x2	49	90	42	20	3	50	50	M3B 20
25a	35	5,5	M 48x2	M 48x2	55	96	45	22	3	55	55	M3B 25a
25	38	6	M 52x2	M 48x2	55	99	45	22	3	55	60	M3B 25
32	44	6,75	M 60x2	M 56x2	64	110	49	24	3,5	65	70	M3B 32

J3B Series for pressures up to PN 320:

DN	d₁	s	d₃	d₄	d₇	L₂	l₂	i₂	a₂	s₂	s₃	Order number
3	6	1,5	M 14x1,5	M 12x1,5	17	46	20	12	2	17	19	J3B 3
4	8	2	M 16x1,5	M 14x1,5	19	46	21	12	2	19	22	J3B 4
5	10	2,5	M 18x1,5	M 16x1,5	21	48	22	12	2	22	24	J3B 5
6	12	3	M 20x1,5	M 18x1,5	23	54	26	12	2,5	24	27	J3B 6
8	13,5	2,75	M 22x1,5	M 20x1,5	25	58	27	14	2,5	27	30	J3B 8
10	17	3	M 27x2	M 22x1,5	27	67	32	14	3	30	36	J3B 10
12	21	4	M 33x2	M 27x2	32	75	35	16	3	36	41	J3B 12
16	27	4,5	M 39x2	M 33x2	39	82	39	18	3	41	46	J3B 16
20	34	5,5	M 48x2	M 42x2	49	94	45	20	3	50	55	J3B 20
25	42	7	M 56x2	M 48x2	55	101	47	22	3	60	65	J3B 25
32	48	6,5	M 64x2	M 56x2	64	111	50	24	3,5	65	70	J3B 32

M6B Series for pressures up to PN 640:

DN	d₁	s	d₃	d₄	d₇	L₂	l₂	i₂	a₂	s₂	s₃	Order number
4	10	3	M 20x1,5	M 22x1,5	27	54	28	14	3	27	27	M6B 4
6	10	2	M 22x1,5	M 22x1,5	27	57	28	14	3	27	32	M6B 6
8	13,5	2,75	M 26x1,5	M 27x2	32	67	32	16	3	32	36	M6B 8
10	17	3,5	M 30x2	M 33x2	39	76	37	18	3	41	41	M6B 10
12	20	4	M 33x2	M 42x2	49	87	40	20	3	50	46	M6B 12
16	25	5	M 422	M 42x2	49	93	43	20	3	50	55	M6B 16
20	30	6	M 45x2	M 48x2	55	120	54	22	3	55	60	M6B 20
25	38	7,5	M 52x2	M 56x2	64	131	58	24	3	65	65	M6B 25

M10B Series for pressures up to PN 1000:

DN	d₁	s	d₃	d₄	d₇	L₂	l₂	i₂	a₂	s₂	s₃	Order number
4	10	3,25	M 20x1,5	M 22x1,5	27	70	35	14	3	27	32	M10B 4
6	13,5	3,75	M 22x1,5	M 27x2	32	80	38	16	3	32	36	M10B 6
8	17	4,5	M 26x1,5	M 33x2	39	97	47	18	3	41	41	M10B 8
10	20	5	M 30x2	M 42x2	49	101	50	20	3	50	46	M10B 10
12	25	6,5	M 33x2	M 42x2	49	118	55	20	3	50	55	M10B 12

For orders on individual parts we need the following information:

Pieces	Component	Designation	Order number	Material number
1	1	Weld-on stub	(Series)-(DN)- 1	___________________
1	2	Clamping nut	(Series)-(DN)- 2	___________________
1	4	Screw-in stub	(Series)-(DN)- 4	___________________

Technical data

Nominal pressure (in bar)	200 PN
Nominal width (in mm)	25 DN
Outer diameter of welding nozzle	30 mm
Wandstärke	3 mm
d3	M 42x2
d4	M 42x2
d7	49 mm
L2	84 mm
l2	40 mm
i1	20 mm
a2	3 mm
s2	50 Wrench size
s3	50 Wrench size
Material according to DIN EN	1.7335
Material description	Chrome

Screw-in tube unions with metric thread

M2B25 D

Advantages & functions

Technical data

Technical drawing

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