Equal Unions
General Details
Double Ferrule Stainless Steel Compression Fittings have been designed and developed to meet the demands for reliability and high precision standards. The Alco-Lok range includes Imperial and Metric sizes (see data sheets for all sizes).
Metric Dimensions (mm)
| T o/d | L1 Length | C | D | F | G Nut | H Body |
| 6 | 44 | 19 | 17 | 14 | 14 | 26 |
| 8 | 46 | 20 | 18 | 14 | 17 | 28 |
| 10 | 49 | 20.5 | 18 | 17 | 19 | 30 |
| 12 | 54 | 23 | 24 | 22 | 22 | 32 |
| 16 | 56 | 24 | 26 | 24 | 27 | 32 |
| 18 | 58 | 24 | 26 | 27 | 30 | 34 |
| 25 | 72 | 31 | .36 | 36 | 41 | 39 |
Imperial Dimensions (inch)
| T o/d | L1 Length | C | D | F | G Nut | H Body |
| 1/8 | 1.44 | .63 | .53 | 1/2 | 7/16 | .88 |
| 3/6 | 1.47 | .63 | .54 | 1/2 | 1/2 | .95 |
| 1/4 | 1.61 | .70 | .60 | 1/2 | 9/16 | 1.03 |
| 5/16 | 1.68 | .73 | .64 | 9/16 | 5/8 | 1.10 |
| 3/8 | 1.77 | .76 | .66 | 5/8 | 11/16 | 1.19 |
| 1/2 | 2.02 | .86 | .90 | 13/16 | 7/8 | 1.22 |
| 5/8 | 2.05 | .86 | .96 | 15/16 | 1 | 1.25 |
| 3/4 | 2.11 | .86 | .96 | 1-1/16 | 1-1/8 | 1.31 |
| 1 | 2.55 | 1.04 | 1.23 | 1-3/8 | 1-1/2 | 1.59 |
Features
- All components from the same material
- High pressure applications
- Seal pressures that will burst the tubing
- Impulse and vibration resistant
- Repeated make and break connections
- Nut threads are silver plated to prevent galling
- No tube rotation or torque transmission on make up
Materials
| Ali Bronze – NES 833 | Alloy C276 / C22 | Alloy 20 | Alloy 400 |
| Alloy 625 | Alloy 825 | F44 (S31254) | F51 (S31803) |
| F53 (S32750) | F55 (S32760) | Titanium | 904L |
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