The HOKE GYROLOK reducing union joins two tubes of different outer diameters in a straight line. RU joins fractional tubes, RU/MM joins metric tubes, and RU/ME joins a metric tube to a fractional tube.
| Type | Reducing union: RU (fractional tubes) / RU/MM (metric tubes) / RU/ME (metric tube to fractional tube) |
| Part Numbers | RU: 2RU1[ ] to 32RU24[ ] / RU/MM: 4RU3[ ]MM to 25RU18[ ]MM / RU/ME: 3RU1[ ]ME to 18RU12[ ]ME |
| Material (GYROLOK series) | Material code in the [ ] of the part number: brass BR, 304/304L stainless steel, 316/316L stainless steel, Monel M, Hastelloy C-276 HC, Duplex 2205 DX3, Inconel Alloy 625, Inconel Alloy 825, Super Duplex 2507 D50, titanium TI, 254 SMO 6MO (available materials may vary by fitting type and size) |
| Overall Length A (RU, inches): larger tube O.D. x smaller tube O.D. | 1/8" x 1/16": A 1.30 / 3/16" x 1/16": A 1.34 / 3/16" x 1/8": A 1.55 / 1/4" x 1/16": A 1.48 / 1/4" x 1/8": A 1.66 / 1/4" x 3/16": A 1.67 / 3/8" x 1/16": A 1.50 / 3/8" x 1/8": A 1.77 / 3/8" x 1/4": A 1.83 / 1/2" x 1/8": A 1.94 / 1/2" x 1/4": A 1.95 / 1/2" x 3/8": A 2.03 / 5/8" x 3/8": A 2.05 / 5/8" x 1/2": A 2.16 / 3/4" x 1/4": A 2.16 / 3/4" x 3/8": A 2.22 / 3/4" x 1/2": A 2.25 / 3/4" x 5/8": A 2.25 / 7/8" x 3/4": A 2.33 / 1" x 1/2": A 2.61 / 1" x 3/4": A 2.55 / 1" x 7/8": A 2.58 / 2" x 1 1/2": A 5.18 |
| Overall Length A (RU/MM, mm): larger tube O.D. x smaller tube O.D. | 4 mm x 3 mm: A 41.6 / 6 mm x 3 mm: A 43.2 / 6 mm x 4 mm: A 44.0 / 8 mm x 4 mm: A 43.6 / 8 mm x 6 mm: A 46.1 / 10 mm x 6 mm: A 46.2 / 10 mm x 8 mm: A 45.7 / 12 mm x 6 mm: A 49.7 / 12 mm x 8 mm: A 50.4 / 12 mm x 10 mm: A 50.9 / 14 mm x 8 mm: A 47.2 / 14 mm x 10 mm: A 48.3 / 14 mm x 12 mm: A 52.3 / 16 mm x 10 mm: A 50.9 / 16 mm x 12 mm: A 54.8 / 18 mm x 12 mm: A 57.5 / 18 mm x 16 mm: A 57.4 / 22 mm x 12 mm: A 59.5 / 22 mm x 18 mm: A 61.1 / 25 mm x 12 mm: A 66.0 / 25 mm x 18 mm: A 64.0 |
| Overall Length A (RU/ME, mm): metric tube O.D. x fractional tube O.D. | 3 mm x 1/16": A 36.1 / 3 mm x 1/8": A 38.0 / 3 mm x 1/4": A 42.5 / 4 mm x 1/8": A 40.6 / 4 mm x 1/4": A 43.0 / 6 mm x 1/16": A 37.5 / 6 mm x 1/8": A 43.2 / 6 mm x 1/4": A 44.7 / 6 mm x 1/2": A 49.7 / 8 mm x 1/8": A 42.9 / 8 mm x 3/16": A 43.2 / 8 mm x 1/4": A 44.8 / 8 mm x 3/8": A 42.7 / 8 mm x 1/2": A 50.9 / 8 mm x 5/8": A 50.1 / 10 mm x 1/8": A 43.5 / 10 mm x 1/4": A 46.8 / 10 mm x 3/8": A 46.8 / 10 mm x 1/2": A 50.3 / 10 mm x 5/8": A 50.9 / 12 mm x 1/4": A 49.5 / 12 mm x 3/8": A 50.1 / 12 mm x 1/2": A 54.9 / 16 mm x 5/8": A 55.0 / 16 mm x 3/4": A 57.5 / 18 mm x 3/4": A 57.0 |