Medical Gas Solutions: Brass
LOKRING Technology offers a patented, permanent, axially swaged tube fitting. This technology for medical gas applications has been approved by NFPA 99-2005 (Paragraph 5.1.10.7 (4)).
Imagine being able to shut down your
medical gas system and within minutes being able to install a tie-in, a tee for future expansion or to cap off a line for renovation. Medical gas tie-ins can be installed as fast as you can drain the lines.
Simply bleed the medical gas or vacuum line, cut and clean the tubing, and install a LOKRING fitting. It takes less than five minutes to install a permanent, leak-tight fitting. Since no brazing is necessary, no expensive nitrogen NF purge is required. Without brazing, no particulate is created during installation. Gas lines go back into service as fast as the Credentialed Medical Gas Verifier can document proper concentrations.
This test was performed on 1½” Type K copper tubing. As shown, the copper tubing burst at 3200 psi while the fitting remained intact.
| Nominal Fitting Size (TXX) |
Tube OD |
Qualified Wall Thickness K |
Qualified WallThickness L | Qualified WallThickness M | |||
| Wall | PressureRating(PSI) | Wall | Pressure Rating (PSI) |
Wall | Pressure Rating (PSI) |
||
| 3/8″ (T06) | 0.500 | 0.049 | 1946 | 0.035 | 1341 | 0.025 | 982 |
| 1/2” (T08) | 0.625 | 0.049 | 1534 | 0.040 | 1242 | 0.028 | 850 |
| 5/8” (T10) | 0.750 | 0.049 | 1266 | 0.042 | 1086 | - | - |
| 3/4”(T12) | 0.875 | 0.065 | 1466 | 0.045 | 1002 | 0.032 | 701 |
| 1” (T16) | 1.125 | 0.065 | 1126 | 0.050 | 850 | 0.035 | 580 |
| 1¼” (T20) | 1.375 | 0.065 | 914 | 0.055 | 755 | 0.042 | 582 |
| 1½” (T24) | 1.625 | 0.072 | 850 | 0.060 | 702 | 0.049 | 569 |
| 2” (T32) | 2.125 | 0.083 | 747 | 0.070 | 625 | 0.058 | 514 |
General Information
|
Nominal Fitting |
Tube |
Qualified Wall K / L / M |
Insertion Depth Pre-Install, |
Insertion Depth Post-Install, |
Outside C |
Minimum Straight Run Before |
|
3/8″ (T06) |
0.500 |
.049/.035/.025 |
1.23 |
0.89 |
0.91 |
1.68 |
|
1/2”(T08) |
0.625 |
.049/.040/.028 |
1.23 |
0.89 |
0.91 |
1.68 |
|
5/8”(T10) |
0.750 |
.049/.042/– |
1.41 |
1.02 |
1.02 |
1.95 |
|
3/4” (T12) |
0.875 |
.065/.045/.032 |
1.55 |
1.12 |
1.19 |
2.04 |
|
1” (T16) |
1.125 |
.065/.050/.035 |
2.04 |
1.46 |
1.53 |
2.63 |
|
1¼” (T20) |
1.375 |
.065/.055/.042 |
2.31 |
1.66 |
1.86 |
2.82 |
|
1½” (T24) |
1.625 |
.072/.060/.049 |
2.64 |
1.90 |
2.21 |
3.20 |
|
2” (T32) |
2.125 |
.083/.070/.058 |
3.44 |
2.47 |
2.88 |
4.01 |
1. All dimensions are in inches.
2. Dimensions A, B ,C & E are applicable to all fittings of the same size within this catalog.
3. For use on copper tube per ASTM B819, type K and L wall, and drawn for copper tube
per ASTM B88 type K and L wall.
4. For tooling dimensions refer to Tooling page
5. Coupling ‘thru-bore’ design permits tube to pass completely through.
6. Fitting material 360 Brass as per ASTM B16.
7. Fittings are cleaned to CGA G-4.1 standard. (OC = Oxygen Clean)
8. Fittings are approved by NFPA 99-2005 and meet or exceed the design requirements of brazed fittings.
9. CAD files in .DWG file format are available for most configurations.
10. All dimensions are reference only and subject to change.
11. Due to variation in heat affected zones (HAZ), Lokring fittings should be installed at least 6″ from a brazed joint.
12. Fittings individually bagged after cleaning.