Stainless Steel Union SFU and SMU
A variety of JIS standard fittings and tubing parts are available. Stainless Steel Union SFU, SMU types from Onda MFG, a company with a proven record in Japan.
• Materials: stainless steel, carbon steel
• Applicable fluids: hot and cold water, air, steam, gas (other than combustible or toxic types), oil.
Drawing
Product Specifications
- Material: SCS13 (SFU type)/SCS14A (SMU type)
- Product markings 304 and 316 indicate JIS symbols SCS13 (SUS304 series) and SCS14A (SUS316 series) respectively.
- Lost wax castings of SCS13 and SCS14A cannot be welded.
- This product can be used for burying.
| Maximum Allowable Working Pressure | Operating Temperature Range | Operating Fluid |
|---|---|---|
| 2.0 MPa | -20°C to +220°C | Hot and cold water, steam |
| 1.3 MPa | -20°C to +180°C | Oil |
Specifications Table
Reference column of specifications table
- (1): Products manufactured in accordance with JIS B 2308.
- (2): Products manufactured in accordance with JIS B 2302 (length) and JIS G 3459 (outer diameter, wall thickness, material)
- (3): ONDA MFG. design standard product
- —: Not covered by (1) to (3)
Cautions/prohibitions
Precautions Regarding Products Using Heat Resistant Non-Asbestos Packing Supplied by ONDA MFG.
1. It cannot be used for air piping because there is a possibility of infiltration leakage (minor leakage) due to insufficient tightening surface pressure of the packing.
2. Due to the gasket seal structure, when using at high temperatures, retighten the union nut after the temperature rises.
3. Packing is a consumable part. Please install it in a place where it can be inspected and replaced.
4. Please install so that piping stress is not applied to the packing part and that it is not unevenly tightened.
5. The table below shows the recommended tightening torque without taking into account bending, etc., of the pipe.
Tightening torque of the heat resistant non-asbestos packing supplied by ONDA MFG.
| Size | 1/8 | 1/4 | 3/8 | 1/2 | 3/4 | 1 | 1 1/4 | 1 1/2 | 2 |
|---|---|---|---|---|---|---|---|---|---|
| N⋅m | 30 | 30 | 30 | 50 | 80 | 110 | 150 | 200 | 300 |
Note: Higher clamping force than Rc thread (tapered thread) is required.