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The Union Cross (Metric Tube) is a high-performance instrumentation fitting engineered to create a secure, four-way intersection for metric-sized tubing within a fluid or gas system. Each of the four ports utilizes a precision-machined double-ferrule compression system, which provides a leak-proof, torque-free seal that remains reliable under high-pressure, vacuum, and high-vibration conditions. This symmetrical configuration is essential for the efficient distribution or merging of process media, allowing for complex multi-directional routing while maintaining a compact and organized layout. Typically manufactured from 316 stainless steel to ensure superior corrosion resistance and durability, the Union Cross is a critical component in analytical instrumentation, chemical processing, and industrial laboratories where high-integrity metric connections are required.
| UNION CROSS | |||||||
|---|---|---|---|---|---|---|---|
| Metric Tube | Basic Ordering Number | Dimensions mm (in) | |||||
| T-Tube O.D. (mm.) | L | C | G | F | E | ||
| 3 | VUC-SS-3M | 22.3(0.88) | 12.9(0.51) | 12.0(0.47) | 9.5(0.37) | 2.4(0.09) | |
| 4 | VUC-SS-4M | 25.4(1.00) | 13.7(0.54) | 12.0(0.47) | 12.7(0.50) | 2.4(0.09) | |
| 6 | VUC-SS-6M | 27.0(1.06) | 15.3(0.60) | 14.0(0.55) | 12.7(0.50) | 4.8(0.19) | |
| 8 | VUC-SS-8M | 29.9(1.18) | 16.2(0.64) | 16.0(0.63) | 15.9(0.63) | 6.4(0.25) | |
| 10 | VUC-SS-10M | 33.5(1.32) | 17.2(0.68) | 19.0(0.75) | 20.6(0.81) | 7.9(0.31) | |
| 12 | VUC-SS-12M | 36.0(1.42) | 22.8(0.90) | 22.0(0.87) | 20.6(0.81) | 9.5(0.37) | |
| 16 | VUC-SS-16M | 37.0(1.46) | 24.4(0.96) | 25.0(0.98) | 23.8(0.94) | 12.7(0.50) | |
| 18 | VUC-SS-18M | 38.3(1.51) | 24.4(0.96) | 30.0(1.18) | 27.0(1.06) | 15.1(0.59) | |
| 20 | VUC-SS-20M | 44.6(1.76) | 26.0(1.02) | 32.0(1.26) | 34.9(1.37) | 15.9(0.63) | |
| 22 | VUC-SS-22M | 44.7(1.76) | 26.0(1.02) | 32.0(1.26) | 34.9(1.37) | 18.3(0.72) | |
| 25 | VUC-SS-25M | 49.2(1.94) | 31.3(1.23) | 38.0(1.50) | 34.9(1.37) | 21.8(0.86) | |