Stainless Steel Pipe Fittings / Union
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[!] Includes ferrule
Specification Table
| Part Number | — | D1 |
| SKUSK6 SKUSDK12.7 | — | 6.35 |
| Part Number | L | E | F | ℓ | Square | ||
| Type | D | Main Body h | Nut H | ||||
| SKUSK | 3.18 (1/8) | 37.8 | 2.5 | 13.4 | 24 | 12 | 12 |
| 4 | 42.6 | 3.5 | 15.3 | 28 | 14 | 14 | |
| 6 | 42.8 | 5 | 15.4 | 28 | 14 | 14 | |
| 6.35 (1/4) | 42.8 | 5 | 15.4 | 28 | 14 | 14 | |
| 8 | 44.6 | 6 | 16.8 | 29 | 14 | 15.87 | |
| 9.53 (3/8) | 46.6 | 8 | 17.8 | 31 | 17 | 19 | |
| 10 | 46.6 | 8 | 17.8 | 31 | 17 | 19 | |
| 12 | 52.6 | 10 | 22.8 | 31 | 22 | 23 | |
| 12.7 (1/2) | 52.6 | 10 | 22.8 | 31 | 22 | 23 | |
[ ! ] Values in ( ) for D dimension are in inches.
Features and Structure of Fittings
Operating temperature range of Stainless Steel Pipe Fitting is -196 to 600°C.
Components Figure
Allowable Operating Pressure by Thickness of Stainless Steel Pipe (MPa)
| Pipe O.D. (mm) | Thickness (mm) | |||
|---|---|---|---|---|
| 0.5 | 1.0 | 1.5 | 2.0 | |
| 4 | 30.7 | 61.5 | — | — |
| 6 | — | 41.0 | 61.5 | — |
| 6.35 (1/4 inch) | — | 38.7 | 58.1 | — |
| 8 | — | 30.7 | 46.1 | — |
| 9.53 (3/8 inch) | — | 25.8 | 38.7 | — |
| 10 | — | 24.6 | 36.9 | — |
| 12 | — | 20.5 | 30.7 | 41.0 |
| 12.7 (1/2 inch) | — | 19.3 | 29.0 | 38.7 |
Applicable Pipe Specification
- Pipe Type: Stainless Steel Pipe
Stainless steel pipes (JIS G3459) subject to
EN 1.4301 Equiv. and EN 1.4401 Equiv. for stainless steel pipes - O.D. Tolerance: ±0.05 mm
- Pipe Surface Hardness: HV190 or less (HRB90 or less)
- Conditions of Pipe Surface: Avoid using pipes with defects such as surface roughness and scratches
Tightening Procedure of Fittings / How to Tighten After Removing
| ■ Tightening Procedure of Fittings | ||
 | (1) Insert the pipe into the fitting until the pipe tip hits the shoulder inside without removing the nut. (2) Hand-tighten the nut until the end of its rotation. Put a mark on this position as ○ point. (3) Hold the fitting body tightly with a wrench and tighten the nut with another wrench by the rotation shown on the right. CAUTION: For plastic tube connections, use Insert (SKITK) for tubes together without fail and tighten ø4 to ø12.7 tubes by 1 1/4 to 1 1/2 rotations. | ø4 Type ø6 to ø12.7 Type  |
| ■ How to Tighten after Removing | ||
 | (1) Be sure to confirm the position of the nut before loosening it to remove the nut. (Standard position for tightening rotation) Make sure that front ferrule is applied at the appropriate position. Make sure that there is no foreign object on the tapered surface, front and rear of the body. (2) Insert the pipe all the way until the front ferrule contacts closely, and then tighten the nut by hand. (Insert carefully to avoid the tapered part on the main body being scratched by the pipe end.) (3) Tighten a little more past the position before loosening by a wrench. | Position before Tighten the Nut Retightened Position  |
Part Number:
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Part Number
|
|---|
| SKUSK3.18 |
| SKUSK4 |
| SKUSK6 |
| SKUSK6.35 |
| SKUSK8 |
| SKUSK9.53 |
| SKUSK10 |
| SKUSK12 |
| SKUSK12.7 |
| Part Number |
Standard Unit Price
| Minimum order quantity | Volume Discount | RoHS | Pipe O.D. D (A1) (Ø) | |
|---|---|---|---|---|---|---|
20.40 € | 1 | Available | 5 Days | 10 | 3.18 | |
15.23 € | 1 | Available | 5 Days | 10 | 4 | |
16.51 € | 1 | Available | 5 Days | 10 | 6 | |
16.51 € | 1 | Available | 5 Days | 10 | 6.35 | |
16.75 € | 1 | Available | 5 Days | 10 | 8 | |
18.14 € | 1 | Available | 5 Days | 10 | 9.53 | |
23.67 € | 1 | Available | 5 Days | 10 | 10 | |
35.39 € | 1 | Available | 5 Days | 10 | 12 | |
35.39 € | 1 | Available | 5 Days | 10 | 12.7 |
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Basic information
| Type | Fitting | Material | EN 1.4401 Equiv. | Applicable Fluid | Water / Air / Oil |
|---|---|---|---|---|---|
| Connection Type | Pipe-to-Pipe, Equal Diameter | Connection Type - Equal Diameter Tube | Unions | Material of Applicable Pipe | Stainless Steel Pipes |
| Surface Treatment | Not Provided | Operating Temperature Range(°C) | -196::600 |
- The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .
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