Ermeto®
Conformance
- SAE J514
- MS 51811-MS51843
Materials
- Steel - Carbon steel with black phosphate finish or plated zinc with yellow Dichromate per ASTM B633-98 (Type II SC-2). Sleeves are heat-treated carbon steel to sufficient hardness to insure proper bite in
stainless as well as carbon steel tubing.
- Stainless - Type 316, sleeves are 17-4PH stainless.
Temperature
- Carbon steel - 800°
- Stainless steel - 1000°
Working Pressures
The following table lists the recommended maximum working pressures for steel flareless tube fittings
manufactured in accordance with SAE J514. Other factors such as thickness of tube, tube material and port
thread type and size must also be considered to determine the maximum pressure for the fitting. Use the
pressure rating of the lowest rated material or component thread. Tompkins and SAE recommend sufficient
testing be conducted to assure that performance levels will be safe and satisfactory, especially if installed
in systems operating at elevated pressures or in severe conditions.
Maximum Working Pressure For Flareless Tube Connections
| Dash Size |
Flared Thread Size(Inches) |
4 To 1 Minimum Burst PSI |
| -2 |
5/16-24 |
6000 |
| -3 |
3/8-24 |
6000 |
| -4 |
7/16-20 |
6000 |
| -5 |
1/2-20 |
6000 |
| -6 |
9/16-16 |
6000 |
| -8 |
3/4-16 |
5000 |
| -10 |
7/8-14 |
5000 |
| -12 |
1 1/16-12 |
4500 |
| -14 |
1 3/16-12 |
4000 |
| -16 |
1 5/16-12 |
4000 |
| -20 |
1 5/8-12 |
3000 |
| -24 |
1 7/8-12 |
2000 |
| -32 |
2 1/2-12 |
1500 |
Recommended J514 Flareless Tube Assembly Instructions
- Step 1. Cut tube square and debur inside and outside. Flush away any contaminants.
- Step 2. Inspect components for damage or contamination.
- Step 3. Lubricate the inside of nut and all surfaces of the sleeve, slide nut onto tube with smaller
opening first. Slide sleeve onto tube with the largest end first.
- Step 4. Insert tube into fitting pilot and finger tighten nut and sleeve onto fitting.
- Step 5. Wrench tighten nut until sleeve just begins to grip the tube. A significant increase in resistance
will occur.
- Step 6. Tighten one full revolution.
Recommended No-Flare JIC Tube Assembly Instructions
- Step 1. Cut tube square and debur inside and outside. Flush away any contaminants.
- Step 2. Inspect all components for damage or contamination.
- Step 3. Lubricate nut, sleeve and fitting threads.
- Step 4. Slide nut and sleeve onto tube with the small side of sleeve inside the nut.
- Step 5. Place end of tube against JIC cone of fitting.
- Step 6. Finger tighten nut, then wrench tighten nut 1 1/4 revolutions beyond finger tight for sizes -3
through -10, and 1 1/2 turns beyond fingertight sizes -12 through -32.
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