SUT-4
Stainless Steel Union Tee – 1/4" Tube OD | Compression Instrumentation Fitting
- Model: SUT-4 (1/4" tube union tee, 316 stainless steel)
- Type: Union Tee (three-way tube-to-tube compression fitting)
- Material: 316 Stainless Steel (corrosion-resistant alloy)
- Pressure Rating: Suitable for high-purity and pressure-rated systems (based on tubing specs)
- Size: 1/4" tube outer diameter (O.D.) x 1/4" tube O.D. x 1/4" tube O.D.
- Finish: Clean, polished surface for hygienic-grade applications
- Equivalent To: Swagelok® SS-400-3
| Inch/Metric | Inch |
|---|---|
| Tube Outside Diameter D | 1/4in, mm |
| Width Across Flats h | 1/2in, mm |
| Dimension A | 15.24mm |
|---|---|
| Dimension B | 17.78mm |
| Dimension I | 20.10mm |
| Dimension L | 27.40mm |
| Dimension d [Min] | 4.82mm |
Stainless Steel Union Tee – 1/4" Tube OD | Compression Instrumentation Fitting (SUT-4)
The SUT-4 is a 1/4" stainless steel union tee designed for compact, high-integrity tube-to-tube connections in sanitary and industrial fluid systems. Made from 316 stainless steel, it delivers corrosion resistance and long-term durability for Clean-in-Place (CIP) instrumentation, lab-grade assemblies, and hygienic process layouts.
This fitting is commonly used in food, biotech, and pharmaceutical systems where precise flow direction and easy routing are critical. Its union-style design allows clean separation and reassembly without compromising the seal, making it ideal for systems requiring flexibility and serviceability.
As a Swagelok® SS-400-3 equivalent, the SUT-4 integrates seamlessly with compression fittings, hygienic valves, and OEM panel builds—supporting cleanroom standards and regulated system performance.
Key Benefits
- Seal: Compression union provides consistent, leak-tight metal-to-metal sealing
- Durability: Withstands pressure cycling, vibration, and frequent CIP cleaning
- Maintenance: Fully reusable with easy disassembly and realignment
- Compatibility: Works with 1/4" stainless tubing and standard compression fittings
- Material: 316 stainless steel meets hygienic and industrial-grade requirements
Typical Applications
- Sanitary fluid transfer systems
- Clean-in-Place (CIP) instrumentation
- Original Equipment Manufacturer (OEM) skids
- Gas and liquid sampling assemblies
- Hygienic valve and process setups
Looking for a Swagelok® SS-400-3 alternative? The SUT-4 delivers dependable, hygienic-grade performance and system flexibility in a corrosion-resistant stainless steel package.
| Parker (CPI)® | 4-4-4 JBZ |
|---|---|
| Tylok (CS-Lok)® | 4-STTT-4 |
| Ham-Let (One-lok)® | 764HL 1/4 X 1/4 |
| Dk-Lok (Z SERIES)® | DTZ-4 |
| SSP (Unilok)® | U4UT |
