Stainless Steel One-Touch Pipe Fitting KQ2-G Series, Branch Elbow Union Fitting KQ2LU-G (Sealant / No Sealant)

Caution
- For materials and specification details, please refer to the catalog.
- Product images may be representative images. Refer to the catalog for details.
Product Description
SMC One-Touch fitting.
[Features]
· One-touch IN/OUT connection.
· Can be used in a vacuum of -100 kPa.
· Metal parts material: SUS303.
· Improved tube detachability: Max. 30% reduction in insertion force, max. 20% reduction in removal force.
· Compact with reduced weight: space comparison; height reduced 24%, width reduced 23%, weight reduced 57%.
· Body shape: Total of 27 models.
[Applications]
· Use to branch line at right angles to female thread.
Branch Elbow Union Fitting: KQ2LU-G (Sealant) Outline Drawing And Dimensions

Branch Elbow Union Fitting: KQ2LU-G (Sealant) Outline Drawing
(Unit: mm)
| Applicable tubing outer diameter mm | Connection thread R | Model | H (width across flats) | øDNote) | Release bushing dimensions | L1 | L2 | L3 | A* | M | P | øO | øN | Q1 | Q2 | Effective cross-sectional area (mm2) | Minimum bore diameter | Weight g | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| øX | Nylon | Urethane | |||||||||||||||||
| ø4 | 1/8 | KQ2LU04-01GS | 10 | 8.2 | 7.7 | 15.8 | 23.3 | 27.4 | 24.3 | 13.3 | 8.2 | 6 | 3.2 | 15.8 | 7.9 | 6 | 4.1 | 3 | 9.5 |
| 1/4 | KQ2LU04-02GS | 14 | 8.2 | 7.7 | 15.8 | 27.7 | 31.8 | 27.1 | 13.3 | 8.2 | 6 | 3.2 | 15.8 | 7.9 | 6 | 4.1 | 3 | 19.3 | |
| ø6 | 1/8 | KQ2LU06-01GS | 12 | 10.4 | 9.7 | 16.6 | 24 | 29.2 | 26.1 | 13.3 | 10.4 | 6 | 3.2 | 16.5 | 10 | 13.9 | 11 | 4.5 | 10.6 |
| 1/4 | KQ2LU06-02GS | 14 | 10.4 | 9.7 | 16.5 | 28.4 | 33.6 | 28.9 | 13.3 | 10.4 | 6 | 3.2 | 16.5 | 10 | 13.9 | 11 | 4.5 | 19.5 | |
| 3/8 | KQ2LU06-03GS | 17 | 10.4 | 9.7 | 16.5 | 29.8 | 35 | 29.9 | 13.3 | 10.4 | 6 | 4.2 | 16.5 | 10 | 13.9 | 11 | 4.5 | 31.5 | |
| ø8 | 1/8 | KQ2LU08-01GS | 14 | 13.2 | 13 | 18.2 | 25.7 | 32.3 | 29.2 | 14.2 | 13.2 | 8 | 4.2 | 18.2 | 13.1 | 26.3 | 18.2 | 6 | 16.4 |
| 1/4 | KQ2LU08-02GS | 14 | 13.2 | 13 | 18.2 | 30.1 | 36.7 | 32 | 14.2 | 13.2 | 8 | 4.2 | 18.2 | 13.1 | 26.3 | 18.2 | 6 | 21.5 | |
| 3/8 | KQ2LU08-03GS | 17 | 13.2 | 13 | 18.2 | 31.5 | 38.1 | 33 | 14.2 | 13.2 | 8 | 4.2 | 18.2 | 13.1 | 26.3 | 18.2 | 6 | 33.3 | |
| ø10 | 1/4 | KQ2LU10-02GS | 17 | 15.9 | 15.6 | 20.3 | 32.2 | 40.2 | 35.5 | 15.6 | 15.9 | 8 | 4.2 | 20.3 | 15.9 | 40.8 | 29 | 7.5 | 26.6 |
| 3/8 | KQ2LU10-03GS | 17 | 15.9 | 15.6 | 20.3 | 33.6 | 41.6 | 36.5 | 15.6 | 15.9 | 8 | 4.2 | 20.3 | 15.9 | 40.8 | 29 | 7.5 | 34.4 | |
| 1/2 | KQ2LU10-04GS | 22 | 15.9 | 15.6 | 20.3 | 37.8 | 45.8 | 39.4 | 17 | 15.9 | 8 | 4.2 | 20.3 | 15.9 | 40.8 | 29 | 7.5 | 62.3 | |
| ø12 | 1/4 | KQ2LU12-02GS | 19 | 22.5 | 18.2 | 22.5 | 34.4 | 43.6 | 38.9 | 17 | 18.5 | 8 | 4.2 | 22.5 | 17.9 | 57.2 | 45.2 | 9 | 37.7 |
| 3/8 | KQ2LU12-03GS | 19 | 22.5 | 18.2 | 22.5 | 35.8 | 45 | 39.9 | 20.6 | 18.5 | 8 | 4.2 | 22.5 | 17.9 | 57.2 | 45.2 | 9 | 40.6 | |
| 1/2 | KQ2LU12-04GS | 22 | 22.5 | 18.2 | 22.5 | 40 | 49.2 | 42.8 | 20.6 | 18.5 | 8 | 4.2 | 22.5 | 17.9 | 57.2 | 45.2 | 9 | 62.7 | |
- *Reference dimensions of R thread after installation
Note) øD is the maximum diameter.
Millimeter Size Stainless Steel One-Touch Pipe Fitting KQ2-G Series Common Specifications (Reference)
Structure

Millimeter Size Stainless Steel One-Touch Pipe Fitting KQ2-G Series Structural Drawing
Applicable tubing
| Tube materials | FEP, PFA, nylon, soft nylon, polyurethane |
|---|---|
| Tube outer diameter (mm) | ø4, ø6, ø8, ø10, ø12, ø16 |
Specifications
| Usable fluids | Air, waterNote 1) | |
|---|---|---|
| Operating pressure rangeNote 2) | -100 kPa to 1 MPa | |
| Proof pressure (at 23°C) | 3 MPa | |
| Ambient and fluid temperature | -5 to 60°C, For water: 0 to 40°C (no freezing) | |
| Thread | Mounting section | JIS B0203 (taper thread for piping) JIS B0205 (metric coarse thread) |
| Nut part | JIS B0205 (metric fine thread) | |
| Seal (thread portion) | With sealant | |
Note 1: Make sure the surge pressure stays below the maximum operating pressure.
Note 2) It is not completely airtight, so please avoid use in leak testers, etc., where a vacuum is maintained.
Principle Part Materials
| Body | SUS303, PBT |
|---|---|
| Stud | SUS303 (thread portion) |
| Chuck | SUS304 |
| Guide | SUS304, SUS303, PBT |
| Release button | POM |
| Seal, O-ring | NBR |
| Gasket | SUS304/NBR |