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The Reducing Union (Metric Tube to Fractional Tube) is a specialized crossover fitting designed to create a secure, leak-proof bridge between metric-sized tubing and fractional (inch) tubing systems. This connector is essential for integrating international equipment or instrumentation, utilizing a high-precision double-ferrule compression design on both ends to ensure a torque-free, gastight seal. Typically manufactured from corrosion-resistant 316 stainless steel, it provides a robust mechanical grip that withstands high-pressure environments and system vibrations. These unions are widely used in industrial sectors like chemical processing and water treatment, where they provide a reliable, streamlined solution for transitioning between different measurement standards without the need for multiple adapters.
| REDUCING UNION | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Metric Tube | Fractional Tube | Dimensions mm (in) | |||||||
| T-Tube O.D. (mm.) | Tx-Tube O.D. (in.) | Basic Ordering Number | L | C | G | F | E | Cx | Gx |
| 4 | 1/8 | VRU-SS-4M-2 | 36.5(1.44) | 13.7(0.54) | 12.0(0.47) | 12.0(0.47) | 2.4(0.09) | 12.7(0.50) | 11.1(0.44) |
| 6 | 1/8 | VRU-SS-6M-2 | 38.5(1.52) | 15.3(0.60) | 14.0(0.55) | 14.0(0.55) | 2.4(0.09) | 12.7(0.50) | 11.1(0.44) |
| 6 | 5/16 | VRU-SS-6M-5 | 42.3(1.67) | 15.3(0.60) | 14.0(0.55) | 14.0(0.55) | 4.8(0.19) | 15.2(0.60) | 14.3(0.56) |
| 8 | 1/4 | VRU-SS-8M-4 | 42.3(1.67) | 16.2(0.64) | 16.0(0.63) | 15.0(0.59) | 4.8(0.19) | 15.2(0.60) | 14.3(0.56) |
| 10 | 1/8 | VRU-SS-10M-2 | 41.8(1.65) | 17.2(0.68) | 19.0(0.75) | 18.0(0.71) | 2.4(0.09) | 12.7(0.50) | 11.1(0.44) |
| 10 | 1/4 | VRU-SS-10M-4 | 44.5(1.75) | 17.2(0.68) | 19.0(0.75) | 18.0(0.71) | 4.8(0.19) | 15.2(0.60) | 14.3(0.56) |
| 10 | 5/16 | VRU-SS-10M-5 | 45.1(1.78) | 17.2(0.68) | 19.0(0.75) | 18.0(0.71) | 6.4(0.25) | 16.2(0.64) | 15.9(0.63) |
| 10 | 3/8 | VRU-SS-10M-6 | 45.9(1.81) | 17.2(0.68) | 19.0(0.75) | 18.0(0.71) | 7.1(0.28) | 16.8(0.66) | 17.5(0.69) |
| 12 | 5/16 | VRU-SS-12M-5 | 47.8(1.88) | 22.8(0.90) | 22.0(0.87) | 22.0(0.87) | 6.4(0.25) | 16.2(0.64) | 15.9(0.63) |
| 12 | 3/8 | VRU-SS-12M-6 | 48.4(1.91) | 22.8(0.90) | 22.0(0.87) | 22.0(0.87) | 7.1(0.28) | 16.8(0.66) | 17.5(0.69) |
| 15 | 1/2 | VRU-SS-15M-8 | 52.0(2.05) | 24.4(0.96) | 25.0(0.98) | 24.0(0.94) | 10.4(0.41) | 22.9(0.90) | 22.2(0.87) |
| 16 | 5/8 | VRU-SS-16M-10 | 52.0(2.05) | 24.4(0.96) | 25.0(0.98) | 24.0(0.94) | 12.7(0.50) | 24.4(0.96) | 25.4(1.00) |
| 20 | 1/2 | VRU-SS-20M-8 | 55.0(2.17) | 26.0(1.02) | 32.0(1.26) | 30.0(1.18) | 10.4(0.41) | 22.9(0.90) | 22.2(0.87) |