Stainless Steel One-Touch Pipe Fitting KQ2-G Series, Half Union Fitting With Hex Socket KQ2S-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
One-touch pipe fitting made by SMC.
[Features]
· One-touch IN/OUT connection.
· Can be used with -100‑kPa vacuum.
[Applications]
· For tight spaces.
Half Union Fitting With Hex Socket: KQ2S-G (Sealant) Specifications
Oval, circular
Dimensional drawing
Release bushing dimensions
| Applicable tubing outer diameter mm | Connection thread R | Model | H (width across flats) | øDNote) | Release bushing dimensions | L1 | L2 | A* | M | Effective cross-sectional area (mm2) | Minimum bore diameter | Weight g | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| øX (X) | Y | Nylon | Urethane | |||||||||||
| ø4 | 1/8 | KQ2S04-01GS1 | 3 | 9.8 | 7.7 | 10 | 19.7 | 18.8 | 16.6 | 13.3 | 4.1 | 3.6 | 3.1 | 8.1 |
| ø6 | 1/8 | KQ2S06-01GS1 | 4 | 10 | 9.7 | 12 | 20 | 18.8 | 16.9 | 13.3 | 10 | 9.9 | 4.1 | 6.5 |
| 1/4 | KQ2S06-02GS1 | 4 | 13.8 | 9.7 | 12 | 19.8 | 18.8 | 15.1 | 13.3 | 10.7 | 10 | 4.1 | 13.4 | |
| ø8 | 1/8 | KQ2S08-01GS | 5 | 13 | 13 | - | 22.9 | 19.7 | 19.8 | 14.2 | 17.2 | 16.2 | 5.1 | 10.2 |
| 1/4 | KQ2S08-02GS | 6 | 14 | 13 | - | 23.2 | 19.5 | 18.5 | 14.2 | 23.3 | 16.2 | 6.1 | 14.3 | |
| 3/8 | KQ2S08-03GS | 6 | 17 | 13 | - | 20.7 | 19.7 | 15.6 | 14.2 | 23.3 | 16.2 | 6.1 | 21.1 | |
| ø10 | 1/8 | KQ2S10-01GS | 5 | 15 | 15.6 | - | 24.3 | 21.1 | 21.2 | 15.6 | 17.2 | 16.2 | 5.1 | 12 |
| 1/4 | KQ2S10-02GS | 8 | 15 | 15.6 | - | 24.6 | 20.1 | 19.9 | 15.6 | 39 | 26.6 | 8.1 | 12.4 | |
| 3/8 | KQ2S10-03GS | 8 | 17 | 15.6 | - | 25.1 | 20.1 | 20 | 15.6 | 39 | 26.6 | 8.1 | 23.2 | |
| 1/2 | KQ2S10-04GS | 8 | 22 | 15.6 | - | 21.1 | 20.1 | 14.7 | 15.6 | 39 | 26.6 | 8.1 | 37.4 | |
| ø12 | 1/4 | KQ2S12-02GS | 8 | 18 | 18.2 | - | 29 | 21.5 | 24.3 | 17 | 46 | 44.5 | 8.1 | 21 |
| 3/8 | KQ2S12-03GS | 10 | 18 | 18.2 | - | 26.4 | 21.8 | 21.3 | 17 | 60 | 44.5 | 10.1 | 21.2 | |
| 1/2 | KQ2S12-04GS | 10 | 22 | 18.2 | - | 22.8 | 21.8 | 16.4 | 17 | 60 | 44.5 | 10.1 | 30.5 | |
- *Reference dimensions after screwing in R thread.
Note) øD represents body diameter.
Guide/chuck
Can be used with both nylon and urethane. Large holding force. The chuck provides a definite grip, greatly increasing the tube holding force.
Seal
Thanks to the unique shape that can be used from a low vacuum up to 1 MPa, there is a reliable seal and low resistance when inserting a tube.
Release bushing (white)
Light removal force. The chuck prevents unnecessary gripping pressure on the tube.
Body/O-ring/stud
Effective for piping in tight spaces. The body and threaded part rotate, allowing for positioning.
Applicable tubing
| Tube materials | FEP, PFA, nylon, soft nylon, polyurethane |
|---|---|
| Tube outer diameter | 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 |