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Class

Class 2

Class 6

Class 3

Class 4

Class 5

Class 1

Class 7

Different Diameter-B Side

Same Diameter (B Side)

3B (Applicable Tubing Size 1/4" x 5/32")

2C (Applicable Tubing Size 1/8" x 0.086"; 3x2mm)

33 (Applicable Tubing Size mm 6x4)

5B (Applicable Tubing Size 1/2" x 3/8", Flange 20A)

6B (Applicable Tubing Size 3/4" x 5/8", Flange 25A)

3A (Applicable Tubing Size 3/8" x 1/4")

22 (Applicable Tubing Size mm 4x3)

4B (Applicable Tubing Size 3/8" x 1/4", Flange 15A)

32 (Applicable Tubing Size mm 8x6)

2A (Applicable Tubing Size 1/4" x 5/32")

5A (Applicable Tubing Size 3/4" x 5/8", Flange 20A)

2B (Applicable Tubing Size 3/16" x 0.127")

42 (Applicable Tubing Size mm 10x8)

Fitting Type

L (Elbow)

H (Connector)

B (Branch Tee)

H (Straight)

R (Run Tee)

T (Union Tee)

U (Union)

E (Union Elbow)

P (Panel Mount Union)

U (Straight Union)

E (Elbow Union)

T (Tee Union)

P (Panel Union)

None

F (Union Flange)

Inch Size, Side A

No (Select Metric Size, Side A)

3A (Tube O.D. 1/4", Tubing Size 3/8"x1/4")

2D (Tube O.D. 1/4", Tubing Size 1/4"x5/32")

4C (Tube O.D. 1/2", Tubing Size 1/2"x3/8")

4D (Tube O.D. 1/2", Tubing Size 3/8"x1/4")

5C (Tube O.D. 3/4", Tubing Size 3/4"x5/8")

1A (Tube O.D. 1/8", Tubing Size 1/8"x0.086")

5A (Tube O.D. 1/2", Tubing Size 3/4"x5/8")

2A (Tube O.D. 1/8", Tubing Size 1/4"x5/32")

4G (Tube O.D. 1/4", Tubing Size 1/2"x3/8")

2F (Tube O.D. 1/4", Tubing Size 1/8"x0.086")

6D (Tube O.D. 1", Tubing Size 3/4"x5/8")

6C (Tube O.D. 1", Tubing Size 1"x7/8")

3D (Tube O.D. 3/8", Tubing Size 1/4"x5/32")

4B (Tube O.D. 3/8", Tubing Size 3/8"x1/4")

6A (Tube O.D. 3/4", Tubing Size 1"x7/8")

3C (Tube O.D. 3/8", Tubing Size 3/8"x1/4")

5D (Tube O.D. 3/4", Tubing Size 1/2"x3/8")

5B (Tube O.D. 1/2", Tubing Size 1/2"x3/8")

Inch Size, Side B

No (For Types H and L, and Types B or R w/Same Tubing Size)

5G (Tube O.D. 1/4", Tubing Size 3/4"x5/8")

3F (Tube O.D. 1/8", Tubing Size 3/8"x1/4")

4E (Tube O.D. 1/2", Tubing Size 1/4"x5/32")

5E (Tube O.D. 3/4", Tubing Size 3/8"x1/4")

Metric Size, Side A

No (Select Inch Size, Side A)

31 (Tube O.D. 1/4", Tubing Size mm 10x8)

23 (Tube O.D. 1/4", Tubing size mm 6x4)

21 (Tube O.D. 1/8", Tubing Size mm 6x4)

43 (Tube O.D. 1/2", Tubing Size mm 12x10)

36 (Tube O.D. 3/8", Tubing Size mm 6x4)

2F (Tube O.D. 1/4", Tubing Size mm 3x2)

32 (Tube O.D. 1/4", Tubing Size mm 8x6)

33 (Tube O.D. 1/4", Tubing Size mm 6x4)

41 (Tube O.D. 3/8", Tubing Size mm 12x10)

22 (Tube O.D. 1/8", Tubing Size mm 4x3)

11 (Tube O.D. 1/8", Tubing Size mm 4x3)

44 (Tube O.D. 1/2", Tubing Size mm 10x8)

53 (Tube O.D. 3/4", Tubing Size mm 19x16)

51 (Tube O.D. 1/2", Tubing Size mm 19x16)

12 (Tube O.D. 1/8", Tubing Size mm 3x2)

34 (Tube O.D. 3/8", Tubing Size mm 10x8)

49 (Tube O.D. 1/4", Tubing Size mm 12x10)

35 (Tube O.D. 3/8", Tubing Size mm 8x6)

Metric Size, Side B

3E (Tube O.D. 3/8", Tubing Size mm 3x2)

310 (Tube O.D. 1/8", Tubing Size mm 8x6)

Nut Material / Packaging

PFA / Clean Packaging Equiv. to Class M3.5

1 (PFA / Standard Packaging Equiv. to Class M5.5)

Packaging

Clean Packaging Equivalent to Class M3.5

Clean Packaging (Standard Packaging)

1 (Standard Packaging Equivalent to Class M5.5)

3 (Packaging Equivalent to Class M5.5 w/PVDF Nut)

1 (Packaging Equivalent to Class M5.5)

2 (Packaging Equivalent to Class M3.5 w/PVDF Nut)

1 (Tubing Plug Nut Material: PFA; Standard Packaging Equivalent to Class M5.5)

w/o an Insert Bush

Piping

M (Male)

F (Female)

Piping Type

S (Space Saving)

T (Tube)

SB (Space Saving, Branch)

SR (Space Saving, Run)

Piping, Thread

2 (Tube Piping for Tubing Plug)

1 (Male Thread for Blanking Plug)

Size

3 (Size 3)

2 (Size 2)

4 (Size 4)

1 (Size 1)

6 (Size 6)

5 (Size 5)

5A (Tubing: 3/4" x 5/8", Piping: ø21.3 x ø15.4)

6A (Tubing: 1" x 3/4", Piping: ø26.7 x ø20.5)

5B (Tubing: 3/4" x 5/8", Piping: ø26.7 x ø20.5)

7A (Tubing: 1 1/4" x 1.1", Piping: ø33.4 x ø26.3)

2A (Tubing: 1/4" x 5/32", Piping: ø13.7 x ø9)

6B (Tubing: 1" x 3/4", Piping: ø33.4 x ø26.3)

5C (Tubing: 3/4" x 5/8", Piping: ø33.4 x ø26.3)

2B (Tubing: 1/4" x 5/32", Piping: ø21.3 x ø15.4)

4B (Tubing: 1/2" x 3/8", Piping: ø26.7 x ø20.5)

3B (Tubing: 3/8" x 1/4", Piping: ø21.3 x ø15.4)

52 (Tubing: 19mm x 16mm, Piping: ø26.7 x ø20.5)

4A (Tubing: 1/2" x 3/8", Piping: ø21.3 x ø15.4)

4C (Tubing: 1/2" x 3/8", Piping: ø33.4 x ø26.3)

Size Combination

4C (Tubing: 1/2" x 3/8"; Thread: 1/2")

6C (Tubing: 1" x 7/8"; Thread: 1")

2B (Tubing: 1/4" x 5/32"; Thread: 1/4")

3C (Tubing: 3/8" x 1/4"; Thread: 3/8")

5C (Tubing: 3/4" x 5/8"; Thread: 3/4")

6A (Tubing: 1" x 7/8"; Thread: 1/2")

3B (Tubing: 3/8" x 1/4"; Thread: 1/4")

4A (Tubing: 1/2" x 3/8"; Thread: 1/4")

4A (1/2" x 3/8")

2A (Tubing: 1/4" x 5/32"; Thread: 1/8")

4B (Tubing: 1/2" x 3/8"; Thread: 3/8")

5A (Tubing: 3/4" x 5/8"; Thread: 3/8")

6A (1" x 7/8")

5B (Tubing: 3/4" x 5/8"; Thread: 1/2")

1A (Tubing: 1/8" x 0.086"; Thread: 1/8")

6B (Tubing: 1" x 7/8"; Thread: 3/4")

5A (3/4" x 5/8")

2A (1/4" x 5/32")

3A (Tubing: 3/8" x 1/4"; Thread: 1/8")

Size Combination-A Side

6A (Applicable Tubing Size 1" x 7/8", Flange 25A)

4A (Applicable Tubing Size 1/2" x 3/8", Flange 15A)

1A (Applicable Tubing Size 1/8" x 0.086")

21 (Applicable Tubing Size mm 6x4)

31 (Applicable Tubing Size mm 10x8)

41 (Applicable Tubing Size mm 12x10)

11 (Applicable Tubing Size mm 4x3)

51 (Applicable Tubing Size mm 19x16)

Size Combinations

2A-ST1 (1/4" x 5/32")

3A-ST2 (3/8" x 1/4"; Type 2)

4A-ST2 (1/2" x 3/8"; Type 2)

4A-ST3 (1/2" x 3/8"; Type 3)

4A-ST4 (1/2" x 3/8"; Type 4)

4A-SS (1/2" x 3/8")

2A-SS (1/4" x 5/32")

3A-SS (3/8" x 1/4")

5A-SS (3/4" x 5/8")

21 (6 x 4)

4A-T-R1 (A: 1/2"; B: 3/8" x 1/4")

3A-ST1 (3/8" x 1/4"; Type 1)

21-ST4 (6 x 4, Type 4)

2A-T-R9 (A: 1/4"; B: 1/2" x 3/8")

3A (3/8" x 1/4")

4A-T-R8 (A: 1/2"; B: 3/4" x 5/8")

Thread

N (NPT)

R, Rc

Thread type

Tubing Size

03 (1/8" x 0.086" or ø3 x ø2)

07 (1/4" x 5/32")

11 (3/8" x 1/4")

19 (3/4" x 5/9" or ø19 x ø16)

13 (1/2" x 3/8")

06 (ø6 x ø4)

25 [1"x7/8" (ø25 x ø22)]

07 (1/4"x5/32")

13 (1/2"x3/8")

11 (3/8"x1/4")

04 (ø4 x ø3)

19 [3/4"x5/8" (ø19 x ø16)]

25 (1" x 7/8" or ø25 x ø22.5)

08 (ø8 x ø6)

SMC LQ High Purity Hyperflare™ Fittings