One-Touch Fitting KQ2 Series, Branch Male Elbow KQ2LU (Motion Face Seal)

Caution
- Please refer to the catalog for detailed specifications and materials.
- Product images may be representative images. Refer to the catalog for details.
Product Description
One-touch fitting by SMC.
[Features]
· Improved tube insertion and removal.
· Compact, lightweight.
· Can be used in vacuum to -100 kPa.
· Body shape: Total of 51 models.
· Thread material / Surface treatment (with/without): 2 types.
· Surface treatment selection: brass (without plating), brass + electroless nickel plating.
[Applications]
· Use to branch into two directions at right angles to a female thread.
Branch Male Elbow: KQ2LU (Face Seal) Outline Drawing And Dimensions

Branch Male Elbow: KQ2LU (Face Seal) Outline Drawing
(Unit: mm)
| Applicable Tube Outer diameter (mm) | Connection thread R | Model | H (Hex size) | øDNote) | L1 | L2 | L3 | A | M | P | O | N | Q1 | Q2 | Effective Area mm2 | Minimum port size | Weight g | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ny lon | Ure thane | |||||||||||||||||
| ø4 | 1/8 | KQ2LU04-01□P | 12 | 8.2 | 15.8 | 22.6 | 26.7 | 21.5 | 13.3 | 8.2 | 6 | 3.2 | 15.8 | 7.9 | 6 | 4.1 | 3 | 9.5 |
| 1/4 | KQ2LU04-02□P | 17 | 8.2 | 15.8 | 26 | 30.1 | 22.5 | 13.3 | 8.2 | 6 | 3.2 | 15.8 | 7.9 | 6 | 4.1 | 3 | 19.4 | |
| ø6 | 1/8 | KQ2LU06-01□P | 12 | 10.4 | 16.5 | 23.3 | 28.5 | 23.3 | 13.3 | 10.4 | 6 | 3.2 | 16.5 | 10 | 13.9 | 11 | 4.5 | 10.2 |
| 1/4 | KQ2LU06-02□P | 17 | 10.4 | 16.5 | 26.7 | 31.9 | 24.3 | 13.3 | 10.4 | 6 | 3.2 | 16.5 | 10 | 13.9 | 11 | 4.5 | 19.8 | |
| 3/8 | KQ2LU06-03□P | 21 | 10.4 | 16.5 | 26.2 | 31.4 | 23.8 | 13.3 | 10.4 | 6 | 3.2 | 16.5 | 10 | 13.9 | 11 | 4.5 | 28.1 | |
| ø8 | 1/8 | KQ2LU08-01□P | 14 | 13.2 | 18.2 | 25 | 31.6 | 26.4 | 14.2 | 13.2 | 8 | 4.2 | 18.2 | 13.1 | 26.3 | 18.2 | 6 | 16.4 |
| 1/4 | KQ2LU08-02□P | 17 | 13.2 | 18.2 | 28.4 | 35 | 27.4 | 14.2 | 13.2 | 8 | 4.2 | 18.2 | 13.1 | 26.3 | 18.2 | 6 | 22 | |
| 3/8 | KQ2LU08-03□P | 21 | 13.2 | 18.2 | 27.9 | 34.5 | 26.9 | 14.2 | 13.2 | 8 | 4.2 | 18.2 | 13.1 | 26.3 | 18.2 | 6 | 30.4 | |
| ø10 | 1/4 | KQ2LU10-02□P | 17 | 15.9 | 20.3 | 30.5 | 38.5 | 30.9 | 15.6 | 15.9 | 8 | 4.2 | 20.3 | 15.9 | 40.8 | 29 | 7.5 | 24.9 |
| 3/8 | KQ2LU10-03□P | 21 | 15.9 | 20.3 | 30 | 38 | 30.4 | 15.6 | 15.9 | 8 | 4.2 | 20.3 | 15.9 | 40.8 | 29 | 7.5 | 32.4 | |
| 1/2 | KQ2LU10-04□P | 27 | 15.9 | 20.3 | 32.3 | 40.3 | 29.9 | 15.6 | 15.9 | 8 | 4.2 | 20.3 | 15.9 | 40.8 | 29 | 7.5 | 50.5 | |
| ø12 | 1/4 | KQ2LU12-02□P | 21 | 18.5 | 22.5 | 32.7 | 41.9 | 34.3 | 17 | 18.5 | 8 | 4.2 | 22.5 | 17.9 | 57.2 | 45.2 | 9 | 39.3 |
| 3/8 | KQ2LU12-03□P | 21 | 18.5 | 22.5 | 32.2 | 41.4 | 33.8 | 17 | 18.5 | 8 | 4.2 | 22.5 | 17.9 | 57.2 | 45.2 | 9 | 37 | |
| 1/2 | KQ2LU12-04□P | 27 | 18.5 | 22.5 | 34.5 | 43.7 | 33.3 | 17 | 18.5 | 8 | 4.2 | 22.5 | 17.9 | 57.2 | 45.2 | 9 | 52.5 | |
□ Symbol: A = brass, N = brass + electroless nickel plating
Note) øD1 represents maximum diameter.
Metric Size One-Touch Fittings KQ2 Series Common Specifications (Reference)
Construction

Metric Size One-Touch Fittings KQ2 Series Structural Drawing
Applicable Tubing
| Tubing material | FEP, PFA, nylon, soft nylon, polyurethane |
|---|---|
| Tubing outer diameter | ø3.2, ø4, ø6, ø8, ø10, ø12, ø16 |
Specifications
| Fluid | Air, waterNote 1) | |
|---|---|---|
| Operating pressure rangeNote 2) | -100 kPa to 1 MPa | |
| Proof pressure (at 23°C) | 3 MPa | |
| Ambient temperature and fluid temperature | -5 to 60°C, Water: 0 to 40°C (No freezing) | |
| Thread | Mounting section | JIS B0203 (Taper thread for piping) JIS B0205 (Metric coarse thread) |
| Nut section | JIS B0205 (Metric fine thread) | |
| Sealant on the threads | Seal ring | |
Note 1) The surge pressure must be under the maximum operating pressure.
Note 2) Do not use the fittings with a leak tester or for vacuum retention because they are not guaranteed for zero leakage.
Principal Parts Materials
| Body | C3604, PBT |
|---|---|
| Stud | C3604 (thread part) |
| Chuck | SUS 304 |
| Guide | SUS 304 |
| Release button | POM |
| Seal, O-ring, Seal ring | NBR |