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The actual product may differ slightly from the image.

High pressure products

Screw-in tube unions with Whitworth thread

J3B32G C

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 end and screw-in thread
  • Available for tube diameters from DN 3 up to DN 50
  • Temperature-resistant from -270 °C up to +650 °C (dependant on the material used)
  • 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 screw-in stub


M1B-G 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

G 1/8 A

14

39

18

8

1,5

14

17

M1B 4 G

6

8

1,5

M 16x1,5

G ¼ A

18

41

18

12

2

19

19

M1B 6 G

8

10

1,5

M 18x1,5

G ¼ A

18

46

21

12

2

19

22

M1B 8 G

10

12

1,75

M 20x1,5

G 3/8 A

22

49

22

12

2,5

22

24

M1B 10 G

12

15

2

M 22x1,5

G ½ A

26

54

25

14

3

27

27

M1B 12 G

16

18

2

M 26x1,5

G ½ A

26

56

25

14

3

27

32

M1B 16 G

20

22

2

M 30x1,5

G ¾ A

32

63

29

16

3

32

36

M1B 20 G

25

28

2,5

M 36x2

G 1 A

39

71

34

18

3

41

41

M1B 25 G

32

35

2,5

M 45x2

G 1 ¼ A

49

76

36

20

3

50

50

M1B 32 G

40a

42

3

M 52x2

G 1 ½ A

55

82

39

22

3

55

60

M1B 40a G

40

44

3

M 56x2

G 1 ½ A

55

83

40

22

3

60

65

M1B 40 G

50

57

4

M 68x2

G 2 A

68

92

44

24

3,5

70

75

M1B 50 G


J1B-G 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

G 1/8 A

14

39

18

8

1,5

14

17

J1B 4 G

6

8

1,5

M 16x1,5

G ¼ A

18

41

18

12

2

19

19

J1B 6 G

8

10

1,5

M 18x1,5

G ¼ A

18

46

21

12

2

19

22

J1B 8 G

10

13,5

1,75

M 22x1,5

G 3/8 A

22

57

26

12

2,5

24

27

J1B 10 G

12

17

2,5

M 24x1,5

G ½ A

26

58

27

14

3

27

30

J1B 12 G

16

21

2,5

M 30x2

G ¾ A

32

67

31

16

3

32

36

J1B 16 G

20

27

3

M 36x2

G 1 A

39

73

36

18

3

41

41

J1B 20 G

25

34

3,5

M 45x2

G 1 ¼ A

49

76

36

20

3

50

50

J1B 25 G

32

42

3,5

M 52x2

G 1 ½ A

55

84

40

22

3

55

60

J1B 32 G

40

49

4

M 60x2

G 1 ¾ A

62

92

44

24

3,5

65

70

J1B 40 G

50

60

5

M 72x2

G 2 A

68

97

46

24

3,5

75

80

J1B 50 G


M2B-G 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

G ¼ A

18

46

21

12

2

19

19

M2B 3 G

4

8

2

M 16x1,5

G ¼ A

18

46

21

12

2

19

22

M2B 4 G

6

10

2

M 18x1,5

G 3/8 A

22

48

23

12

2,5

22

22

M2B 6 G

8

12

2

M 20x1,5

G 3/8 A

22

50

23

12

2,5

22

24

M2B 8 G

10

13,5

1,75

M 22x1,5

G ½ A

26

58

27

14

3

27

27

M2B 10 G

12

16

2,5

M 24x1,5

G ½ A

26

58

27

14

3

27

30

M2B 12 G

16

20

2,5

M 30x2

G ¾ A

32

67

31

16

3

32

36

M2B 16 G

20

25

2,5

M 36x2

G 1 A

39

77

36

18

3

41

46

M2B 20 G

25

30

3

M 42x2

G 1 ¼ A

49

84

40

20

3

50

50

M2B 25 G

32

38

3,5

M 52x2

G 1 ½ A

55

93

43

22

3

55

60

M2B 32 G

40

44

4,25

M 56x2

G 1 ¾ A

62

102

47

24

3,5

65

65

M2B 40 G

50

57

6

M 68x2

G 2 A

68

109

49

24

3,5

70

80

M2B 50 G


J2B-G 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

G ¼ A

18

46

21

12

2

19

19

J2B 3 G

4

8

2

M 16x1,5

G ¼ A

18

46

21

12

2

19

22

J2B 4 G

6

10

2

M 18x1,5

G 3/8 A

22

48

23

12

2,5

22

22

J2B 6 G

8

12

2

M 20x1,5

G 3/8 A

22

50

23

12

2,5

22

24

J2B 8 G

10

13,5

1,75

M 22x1,5

G ½ A

26

58

27

14

3

27

27

J2B 10 G

12

17

2,5

M 24x1,5

G ½ A

26

59

28

14

3

27

30

J2B 12 G

16

21

2,5

M 30x2

G ¾ A

32

68

32

16

3

32

36

J2B 16 G

20

27

3,5

M 36x2

G 1 A

39

77

36

18

3

41

46

J2B 20 G

25

34

4,5

M 45x2

G 1 ¼ A

49

85

41

20

3

50

55

J2B 25 G

32

42

4

M 52x2

G 1 ½ A

55

94

44

22

3

55

60

J2B 32 G

40

50

5,5

M 64x2

G 1 ¾ A

62

102

47

24

3,5

65

75

J2B 40 G


M3B-G 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

G ¼ A

18

46

21

12

2

19

19

M3B 3 G

4

8

2

M 16x1,5

G ¼ A

18

46

21

12

2

19

22

M3B 4 G

5

10

2,5

M 18x1,5

G 3/8A

22

48

23

12

2,5

22

24

M3B 5 G

6

12

3

M 20x1,5

G 3/8 A

22

54

25

12

2,5

22

27

M3B 6 G

8

13,5

2,75

M 22x1,5

G ½ A

26

58

27

14

3

27

30

M3B 8 G

10

16

3

M 24x1,5

G ½ A

26

64

29

14

3

27

32

M3B 10 G

12

20

4

M 30x2

G ¾ A

32

73

33

16

3

32

36

M3B 12 G

16

25

4,5

M 36x2

G 1 A

39

81

38

18

3

41

46

M3B 16 G

20

30

5

M 42x2

G 1 ¼ A

49

90

42

20

3

50

50

M3B 20 G

25a

35

5,5

M 48x2

G 1 ½ A

55

96

45

22

3

55

55

M3B 25a G

25

38

6

M 52x2

G 1 ½ A

55

99

45

22

3

55

60

M3B 25 G

32

44

6,75

M 60x2

G 1 ¾ A

62

110

49

24

3,5

65

70

M3B 32 G


J3B-G 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

G ¼ A

18

46

21

12

2

19

19

J3B 3 G

4

8

2

M 16x1,5

G ¼ A

18

46

21

12

2

19

22

J3B 4 G

5

10

2,5

M 18x1,5

G 3/8A

22

48

23

12

2,5

22

24

J3B 5 G

6

12

3

M 20x1,5

G 3/8 A

22

54

25

12

2,5

22

27

J3B 6 G

8

13,5

2,75

M 22x1,5

G ½ A

26

58

27

14

3

27

30

J3B 8 G

10

17

3

M 27x2

G ½ A

26

67

32

14

3

30

36

J3B 10 G

12

21

4

M 33x2

G ¾ A

32

75

35

16

3

36

41

J3B 12 G

16

27

4,5

M 39x2

G 1 A

39

82

39

18

3

41

46

J3B 16 G

20

34

5,5

M 48x2

G 1 ¼ A

49

94

45

20

3

50

55

J3B 20 G

25

42

7

M 56x2

G 1 ½ A

55

101

47

22

3

60

65

J3B 25 G

32

48

6,5

M 64x2

G 1 ¾ A

62

111

50

24

3,5

65

70

J3B 32 G


M6B Series for pressures up to PN 640:

DN

d1

s

d3

d4

d7

L2

l2

i2

a2

s2

s3

Order number

4103

M 20x1,5

G ½ A

2654281332727

M6B 4G

6102

M 22x1,5

G ½ A

2657281432732M6B 6G
813,52,75

M 26x1,5

G ¾ A

3267321633236M6B 8G
10173,5

M 30x2

G 1 A 

3976371834241M6B 10G
12204

M 33x2

G 1 ¼ A

4987402035046M6B 12G
16255

M 42x2

G 1 ¼ A

4993432035055M6B 16G
20306

M 45x2

G 1 ½ A

55120542235560M6B 20G
25387,5

M 52x2

G 3 ¾ A

62

131

582436565M6B 25G


M10B Series for pressures up to PN 1000:

DN

d1

s

d3

d4

d7

L2

l2

i2

a2

s2

s3

Order number

4103,25

M 22x1,5

G ½ A

2670351432732

M10B 4G

613,53,75

M 26x1,5

G ¾ A

3280381633236M10B 6G
8174,5

M 30x2

G 1 A 

3997471834141M10B 8G
10205

M 33x2

G 1 ¼ A

49101502035046M10B 10G
12256,5

M 42x2

G 1 ¼ A

49118552035055M10B 12G


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

5

Screw-in stub

(Series)-(DN)- 5

___________________


Technical data

Nominal pressure (in bar) 320 PN
Nominal width (in mm) 32 DN
Outer diameter of welding nozzle 48 mm
Wandstärke 6.5 mm
d3 M 64x2 
d4 G 1 ¾ A 
d7 62 mm
L2 111 mm
l1 50 mm
i1 24 mm
a2 3.5 mm
s2 65 Wrench size
s3 70 Wrench size
Material according to DIN EN 1.4571 
Material description Stainless steel 

Technical drawing



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