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One-touch fitting by SMC.
[Features]
· Improved tube insertion and removal.
· Compact, lightweight.
· Can be used in vacuum to -100 kPa.
[Applications]
· Use to branch into two and connect tubing of reduced size in the same direction in line with the one-touch fitting.
Part Number
Configured Part Number is shown.
KQ2X04-06A

Different Diameter Plug-In Y: KQ2X Outline Drawing
Applicable Tubing: Metric Size, Connection Thread: M, R, Rc
| Applicable Tube Outer diameter mm | Applicable Fitting Size ød | Model | øD1Note) | øD2Note) | L1 | L2 | A | P | M | Q | øO | øN | Effective Area mm2 | Minimum Port Size | Weight g | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nylon | Urethane | |||||||||||||||
| ø3.2 | ø4 | KQ2X23-04A | 7.1 | 8.2 | 44.7 | 18 | 31.4 | 7.1 | 13.3 | 5.7 | 6 | 3.2 | 3.2 | 2.7 | 2.5 | 2.8 |
| ø4 | ø6 | KQ2X04-06A | 8.2 | 10.4 | 45.2 | 18 | 31.9 | 8.2 | 13.3 | 6.8 | 6 | 3.2 | 4.2 | 4.2 | 3 | 3.8 |
| ø6 | ø8 | KQ2X06-08A | 10.4 | 13.2 | 49.9 | 19.3 | 35.7 | 10.4 | 13.3 | 8.2 | 6 | 3.2 | 13.4 | 10.6 | 4.5 | 5.5 |
| ø8 | ø10 | KQ2X08-10A | 13.2 | 15.9 | 54.8 | 22.3 | 39.2 | 13.2 | 14.2 | 10.1 | 8 | 4.2 | 25.6 | 17.7 | 6 | 9.8 |
| ø10 | ø12 | KQ2X10-12A | 15.9 | 18.5 | 60.4 | 25 | 43.4 | 15.9 | 15.6 | 11.4 | 8 | 4.2 | 40 | 28.4 | 7.5 | 14.6 |
Note) øD1, øD2 represents maximum diameter.
Applicable Tubing: Inch Size Connection Thread: UNF, NPT
| Applicable Tube Outer diameter Inch | Applicable Fitting Size ød inch | Model | øD1Note) | øD2Note) | L1 | L2 | A | P | M | Q | øO | øN | Effective Area mm2 | Minimum Port Size | Weight g | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nylon | Urethane | |||||||||||||||
| ø1/8 | ø5/32 | KQ2X01-03A | 7.1 | 8.2 | 44.7 | 18 | 42.2 | 7.1 | 13.3 | 5.7 | 6 | 3.2 | 3.2 | 2.7 | 2.5 | 2.8 |
| ø5/32 | ø3/16 | KQ2X03-05A | 8.2 | 9.1 | 46.1 | 18.8 | 42.6 | 8.2 | 13.3 | 6.2 | 6 | 3.2 | 3.4 | 2.9 | 3.5 | 3.3 |
| ø1/4 | KQ2X03-07A | 8.2 | 11.1 | 46.8 | 19 | 42.2 | 8.2 | 13.3 | 7.2 | 6 | 3.2 | 3.4 | 2.9 | 4.1 | 4 | |
| ø3/16 | ø1/4 | KQ2X05-07A | 9.1 | 11.1 | 47.1 | 19.8 | 42.5 | 9.1 | 13.3 | 7.2 | 6 | 3.2 | 8.4 | 7 | 4.6 | 4.4 |
| ø1/4 | ø5/16 | KQ2X07-09A | 11.1 | 13.2 | 51.2 | 21.3 | 45.2 | 11.1 | 13.3 | 8.6 | 8 | 4 | 14.4 | 12.4 | 6 | 6.5 |
Note) øD1, øD2 represents maximum diameter.

KQ2 Series construction
| Tubing material | FEP, PFA, nylon, soft nylon, polyurethane |
|---|---|
| Tubing outer diameter | ø2, ø3.2, ø4, ø6, ø8, ø10, ø12, ø16 |
| 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) | |
| Seal on the threads | With sealant | |
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.
| Body | C3604, PBT, PP, SUS 303 |
|---|---|
| Stud | C3604 (thread part), SUS 303 (thread part) |
| Chuck | SUS 304 |
| Guide | SUS 304 |
| Release button | POM |
| Seal, O-ring | NBR |
| Gasket | SUS 304/NBR |

KQ2 Series construction
| Tubing material | FEP, PFA, nylon, soft nylon, polyurethane |
|---|---|
| Tubing outer diameter | ø1/8 ", ø5/32 ", ø3/16 ", ø1/4 ", ø5/16 ", ø3/8 ", ø1/2 " |
| 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 | ANSI/ASME1.20.1 (NPT thread) JIS B0208 (UNF thread) |
| Nut section | JIS B0208 (UNF thread) | |
| Seal on the threads | With sealant | |
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.
| Body | C3604, PBT, PP |
|---|---|
| Stud | C3604 (thread part) |
| Chuck | SUS 304 |
| Guide | SUS 304 |
| Release button | POM |
| Seal, O-ring | NBR |
| Gasket | SUS 304/NBR |
| Part Number |
|---|
| KQ2X04-06A |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | Applicable Tube O.D.1 (φ) | Applicable Fitting Size (mm) | Applicable tube fitting size (inches) | Types of connection | Number of Connection Tubes (piece) | Color | Release button shape | Release button color | Custom-made specifications |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MYR 15.90 | 10 Piece(s) | 3 Day(s) | 4 | 6 | - | Tube Connection | 3 | White | Perfect circle | Light Gray | - |
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| Fitting Type | Socket and reducer | Applicable Fluid | Water / Air | Body Material | PBT+PP |
|---|---|---|---|---|---|
| Types | Single Action / Pipe | Application | Standard/Mini | Packing, Material of O-Ring | NBR |
| Sockets, Reducers | Union Y Branch | Operating Temperature(°C) | -5::60 |
Please check the type/dimensions/specifications of the part KQ2X04-06A in the Different Diameter Plug-In Y KQ2X, One-Touch Fitting KQ2 Series series.
| Part Number |
|---|
| KQ2X01-03A |
| KQ2X03-05A |
| KQ2X03-07A |
| KQ2X04-06A-X35 |
| KQ2X05-07A |
| KQ2X06-08A |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | Applicable Tube O.D.1 (φ) | Applicable Fitting Size (mm) | Applicable tube fitting size (inches) | Types of connection | Number of Connection Tubes (piece) | Color | Release button shape | Release button color | Custom-made specifications |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MYR 18.70 | 10 Piece(s) | 10 Day(s) or more | 1/8 | - | 5/32 | Tube Connection | 3 | White | Perfect circle | Orange | - | ||
MYR 25.89 | 10 Piece(s) | 10 Day(s) or more | 5/32 | - | 3/16 | Tube Connection | 3 | White | Perfect circle | Orange | N/A | ||
MYR 17.80 | 10 Piece(s) | 43 Day(s) | 5/32 | - | 1/4 | Tube Connection | 3 | White | Perfect circle | Orange | N/A | ||
MYR 18.38 | 10 Piece(s) | 13 Day(s) or more | 4 | 6 | - | Tube Connection | 3 | Black | Perfect circle | Light Gray | Body color change | ||
MYR 25.95 | 10 Piece(s) | 10 Day(s) or more | 3/16 | - | 1/4 | Tube Connection | 3 | White | Perfect circle | Orange | N/A | ||
MYR 22.20 | 10 Piece(s) | 3 Day(s) | 6 | 8 | - | Tube Connection | 3 | White | Perfect circle | Light Gray | - |
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