Superlok Union Tee, 3/8 in. to 3/4 in. Tube, 316 Stainless
ABOUT THIS PART
Superlok SUT union tees, the same tube size on all three ports, 316 stainless. A tee splits or combines a line. The 3/4 in. size is usually the vapor side or a recovery header on our systems; the 3/8 in. and 1/2 in. sizes suit smaller process and instrument runs.
SPECIFICATIONS
| Type | Union tee, three-way tube fitting |
|---|---|
| Manufacturer | Superlok |
| Part number | SUT-12-S316 |
| Ports | Three, all 3/4 in tube OD |
| Material | 316 stainless |
| Seal | Two-ferrule compression, every port |
| Reducing ports | None. All three ports are the same size |
| Fitting family rating, per 3P Certz ECR-250902-R0 | Superlok 316 stainless tube fittings to 1 in, 2400 psi (165 bar), -320 F to 1200 F (-196 C to 649 C) |
| Working pressure of your line | Set by the tubing wall and the weakest component on the circuit, not by the fitting |
| Price | $77.39 |
| Not included | Tube, and spare nut and ferrule sets |
| Built or stocked | Stocked in Bend |
Sizes
- 3/4 in. tube, SUT-12-S316, in stock
- 1/2 in. tube, SUT-8-S316, made to order
- 3/8 in. tube, SUT-6-S316, made to order
What it is
- Three ports, all the same tube OD
- 316 stainless body, two-ferrule compression seal on every port
- Nuts and ferrules supplied on the fitting, one set per port
- In the part number, the middle number is the tube size in sixteenths (6 = 3/8, 8 = 1/2, 12 = 3/4) and S316 is the material
Where it goes
- Splitting a line to two destinations
- Combining two returns into one run
- Hanging a branch off a main line without cutting in a manifold
Ratings
3P Certz engineering report ECR-250902-R0 covers Superlok 316 stainless tube fittings up to 1 inch at 2400 psi (165 bar) and -320 °F to 1200 °F (-196 °C to 649 °C). That is the figure for the fitting family in the report. What your circuit actually holds is set by your tubing wall and by the weakest component on the line, not by the tee.
Fitment
- All three ports are the same size. This is not a reducing tee, so a smaller branch needs a reducer or a reducing tee.
- Not a tri-clamp part, not an NPT fitting, not a hose fitting.
- Tube and any spare nut and ferrule sets are separate items.
- We do not recommend mixing tube fitting components between manufacturers. Make the joint up with the nuts and ferrules that come with the fitting.
Sizes marked made to order are not on our shelf. We order them from our supplier when you buy and email you the ship date. Ships from Bend, Oregon.
| FITS | 3/4 inch OD tube on all three ports, for splitting or combining a 3/4 inch vapor or recovery line in a T. It is not a reducing tee, so a 1/2 or 3/8 inch branch needs a reducer. It does not fit tri-clamp, NPT or hose ends, and tube and spare nut and ferrule sets are separate items. |
|---|
▦ IN YOUR MANUAL
This part appears in the operator manual that ships with your system. The QR code there links to this page.
◈ REFERENCE FOR THIS PART
COMMON QUESTIONS
How many ports and what size?
Three, and all three are 3/4 inch tube OD. This is not a reducing tee.
Can I run a 1/2 inch branch off it?
Not directly. Put a 3/4 to 1/2 inch reducer on the branch port, or use a reducing tee.
Does it come with nuts and ferrules?
Yes, one set per port, on the fitting. Tube and spare sets are separate items.
What is it rated for?
3P Certz engineering report ECR-250902-R0 covers Superlok 316 stainless tube fittings up to 1 inch at 2400 psi (165 bar) and -320 F to 1200 F (-196 C to 649 C). In practice your working pressure is set by your tubing wall and by the weakest component on the line.
Can I mix these with Swagelok nuts and ferrules?
Yes. Superlok and Swagelok interchange, and we have verified it on our own builds. For any other maker, match the brand.
Where would I use 3/4 inch rather than 1/2?
Vapor side and recovery runs, where you want the flow area. Instrument and liquid feed lines on our systems are usually 1/2 inch or smaller.
What does it cost?
$77.39, priced on this page.