PRIME ENGINEERS

REDUCING UNION

BULKHEAD UNION

Imperial Tubing UR

PART NO.

‘T’ TUBE OD

‘Tx’ TUBE OD

A

C

Cx

D

Dx

E

MIN

F

A/F

G

NUT

GX

NUT

H

BODY

UR42

1/4”

1/8”

1.52

0.70

0.60

0.60

0.50

0.09

1/2”

9/16”

7/16”

0.97

UR54

5/16”

1/4”

1.66

0.73

0.70

0.64

0.60

0.19

9/16”

5/8”

9/16”

1.08

UR64

3/8”

1/4”

1.70

0.76

0.70

0.66

0.60

0.19

5/8”

11/16”

9/16”

1.12

UR84

1/2”

1/4”

1.85

0.86

0.70

0.90

0.60

0.19

13/16”

7/8”

9/16”

1.16

UR86

1/2”

3/8”

1.91

0.86

0.76

0.90

0.66

0.28

13/16”

7/8”

11/16”

1.22

UR106

5/8”

3/8”

1.94

0.86

0.76

0.96

0.66

0.28

15/16””

11/16”

1.25

UR108

5/8”

1/2”

2.05

0.86

0.86

0.96

0.90

0.41

15/16”

7/8”

1.25

UR126

3/4”

3/8”

2.00

0.86

0.86

0.96

0.66

0.28

1-1/16”

1-1/8”

11/16”

1.31

UR128

3/4”

1/2”

2.11

0.86

0.86

0.96

0.90

0.41

1-1/16”

1-1/8””

7/8”

1.31

UR1210

3/4”

5/8”

2.11

0.86

0.86

0.96

0.96

0.50

1-1/16”

1-1/8”

15/16”

1.31

UR1612

3/4”

2.38

1.04

0.86

1.23

0.96

0.62

1-3/8”

1-1/2”

1-1/8”

1.50

Metric Tubing URm

PART NO.

‘T’ TUBE OD

‘Tx’ TUBE OD

A

C

Cx

D

Dx

E

MIN

F

A/F

G

NUT

GX

NUT

H

BODY

URm63

6

3

38.6

177

15.3

15.3

12.9

2.4

14

14

11

24.6

URm86

8

6

42.3

18.6

17.7

16.2

15.3

4.8

14

16

14

27.4

URm106

10

6

44.5

19.5

17.7

17.2

15.3

4.8

17

19

14

29.5

URm108

10

8

45.1

19.5

18.6

17.2

16.2

6.3

17

19

16

30.0

URm126

12

6

47.0

22.0

17.7

23.0

15.3

4.8

20.6

22

14

29.5

URm128

12

8

47.8

22.0

18.6

23.0

16.2

6.3

20.6

22

16

30.2

URm1210

12

10

48.7

22.0

19.5

23.0

17.2

7.9

20.6

22

19

31.0

URm1610

16

10

49.5

22.0

19.5

24.6

17.2

7.9

24

25.4

19

31.8

URm1612

16

12

52.0

22.0

22.0

24.6

23.0

9.5

24

25.4

22

31.8

URm2520

25

20

62.3

26.5

22.0

31.2

26.1

15.9

35

38

32

39.9

Imperial Tubing BHU

PART NO.

‘T’ TUBE OD

A

C

D

E

MIN

F

A/F

G

A/F

H

J

K

Panel Hole Size

BHU2

1/8”

2.02

0.60

0.50

0.09

1/2”

7/16”

1.50

1.23

0.97

0.33

BHU3

3/16”

2.11

0.63

0.64

0.12

7/16”

1/2”

1.59

1.26

1.00

0.39

BHU4

1/4”

2.27

0.70

0.60

0.19

5/8”

9/16”

1.69

1.32

1.03

0.45

BHU5

5/16”

2.39

0.73

0.64

0.25

11/16”

5/8”

1.81

1.41

1.12

0.52

BHU6

3/8”

2.45

0.76

0.66

0.28

3/4”

11/16”

1.87

1.45

1.16

0.58

BHU8

1/2”

2.80

0.86

0.90

0.41

15/16”

7/8”

2.00

1.65

1.25

0.77

BHU10

5/8”

2.86

0.86

0.96

0.50

1-1/16”

2.06

1.68

1.28

0.89

BHU12

3/4”

3.11

0.86

0.96

0.62

1-3/16”

1-1/8”

2.31

1.87

1.47

1.02

BHU16

3.77

1.04

1.23

0.88

1-5/8”

1-1/2”

2.81

2.26

1.78

1.33

Metric Tubing BHU

PART NO.

‘T’ TUBE OD

A

C

D

E

MIN

F

A/F

G

A/F

H

J

K

Panel Hole Size

BHUm3

3

51.3

15.3

12.9

2.4

12.7

11.0

38.1

31.2

24.6

8.3

BHUm6

6

57.7

17.7

15.3

4.8

16.0

14.0

42.9

33.6

26.2

11.5

BHUm8

8

61.0

18.6

16.2

6.3

17.4

16.0

46.0

36.1

28.6

13.1

BHUm10

10

63.7

19.5

17.2

7.9

19.0

17.4

48.5

37.0

29.4

16.3

BHUm12

12

71.0

22.0

23.0

9.5

24.0

22.0

50.8

41.9

31.8

19.5

BHUm16

16

72.5

22.0

24.6

12.7

27.0

25.4

52.4

42.6

32.5

22.8

BHUm20

20

84.5

22.0

26.1

15.9

35.0

32.0

64.3

53.0

42.9

29.0

BHUm25

25

95.8

26.5

31.2

21.8

41.0

38.0

71.4

57.4

45.2

33.7