The TUPY Brazil reducing elbow (figure 90R) turns the run through 90° and reduces the diameter at the same time, with no separate reducer needed.
| Figure number | 90R |
| Size range | 3/8"×1/4" – 2.1/2"×2" |
| Finish | Galvanised and black |
| Thread | BSP (ISO 7-1) |
| Standard | EN 10242 / ISO 49 |
| Maximum working pressure | 25 bar (−20 to +120°C); 20 bar at +300°C — verify application |
| Material | Malleable cast iron |
The size range summarises this figure's table and does not guarantee stock in every size. TUPYBSP working pressure is 25 bar from −20 to +120 °C; consult the catalogue pressure–temperature table outside that range. Hydrostatic test values are not working pressures; the catalogue specifies a separate 37.5 bar test value for joints. Check the product-family catalogue and the required figure and size approvals before selection.
These marks relate to TUPY product-line standards and approvals. Scope varies by figure, size and application; confirm the current catalogue and figure-specific listing before specification.
The dimension letters follow the technical drawing above. Weights are per single fitting, in kilograms.
| Nominal diameter | Dimensions (mm) | Weight (kg) | Pieces per carton | |||||
|---|---|---|---|---|---|---|---|---|
| inch | mm | a | b | z1 | z2 | Galvanised | Black | |
| 3/8"×1/4" | 10×8 | 23 | 23 | 13 | 13 | 0.045 | 0.042 | |
| 1/2"×1/4" | 15×8 | 25 | 25 | 12 | 15 | 0.063 | 0.060 | |
| 1/2"×3/8" | 15×10 | 26 | 26 | 13 | 16 | 0.067 | 0.065 | |
| 3/4"×3/8" | 20×10 | 28 | 28 | 13 | 18 | 0.093 | 0.091 | |
| 3/4"×1/2" | 20×15 | 30 | 31 | 15 | 18 | 0.113 | 0.108 | 120 |
| 1"×1/2" | 25×15 | 32 | 34 | 15 | 21 | 0.139 | 0.134 | 100 |
| 1"×3/4" | 25×20 | 35 | 36 | 18 | 21 | 0.182 | 0.170 | 80 |
| 1.1/4"×3/4" | 32×20 | 34 | 39 | 15 | 26 | 0.224 | 0.215 | 70 |
| 1.1/4"×1" | 32×25 | 36 | 41 | 17 | 26 | 0.289 | 0.277 | 50 |
| 1.1/2"×3/4" | 40×20 | 40 | 42 | 21 | 25 | 0.294 | 0.282 | 50 |
| 1.1/2"×1" | 40×25 | 39 | 44 | 20 | 29 | 0.340 | 0.330 | 45 |
| 1.1/2"×1.1/4" | 40×32 | 42 | 46 | 23 | 29 | 0.405 | 0.390 | 35 |
| 2"×1.1/2" | 50×40 | 46 | 48 | 27 | 29 | 0.531 | 0.513 | 20 |
| 2.1/2"×2" | 65×50 | 52 | 56 | 28 | 36 | 0.922 | 0.912 | |
Source: TUPY catalogue dimensional data for this figure; verify the current revision.
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Send us the figures and sizes you need and our Dubai office will come back with a quotation, stock position and lead time.
The reducing elbow does two jobs at once: a 90° change of direction and a reduction in diameter. Both of its ports are female threaded, but they are not the same size.
The alternative is an ordinary elbow together with a reducer — one more fitting, one more thread to seal and more length in the run. In tight plant rooms and behind manifolds, those few centimetres decide the layout.
Because the change of diameter happens exactly at the change of direction, the flow both turns and accelerates in this fitting. Casting uniformity on the inside of the bend determines the pressure loss and the durability of the piece.
The TUPY reducing elbow is supplied as figure 90R: malleable cast iron with a BSP thread to EN 10242 and ISO 49, in size combinations from 1/2in to 2in.
The TUPY Brazil Reducing Elbow is made in 14 sizes, from 3/8"×1/4" to 2.1/2"×2". The full list of sizes, with the dimensions in millimetres and the weight of each piece, is in the dimensions and weights table on this page.
The weight depends on the size: the 1.1/4"×3/4" size, for example, weighs 0.224 kg galvanised and 0.215 kg black. The weights of every size are taken from the official TUPY catalogue and are listed in the table on this page, so they can be used to work out shipping weight and freight cost.
TUPYBSP fittings are threaded to BSP in accordance with ISO 7-1; the male thread is tapered and the seal is made on the thread itself. BSP is not interchangeable with NPT, and screwing the two together will leak. TUPY also produces a separate NPT line, which is covered in the downloads section.
The figure 90 elbow turns the pipe run through 90° and is female at both ends. The figure 120 45° elbow is used for a gentler change of direction and a lower pressure drop. The figure 90R reducing elbow has two ends of different diameter, so it changes direction and diameter in one fitting. The figure 92 street elbow is male at one end and female at the other and screws straight into the next fitting without a socket; its 45° version is figure 121.
According to TUPY's technical catalogue, the working pressure of TUPYBSP fittings is 25 bar between −20 °C and +120 °C. For temperatures outside that interval, use the catalogue pressure-temperature table and confirm suitability for the application. The catalogue lists hydrostatic design-test pressures of 100 bar for other fittings from 1/4 in to 4 in, 64 bar for 5 in and 6 in, and 37.5 bar for joints. These are test values, not working-pressure ratings. Confirm the applicable fitting, temperature range and project requirements before selection.
The TUPY Reducing Elbow is manufactured to EN 10242 / ISO 49. TUPY malleable cast iron fittings are built to ISO 49, EN 10242 and ABNT NBR 6943, and their threads follow ISO 7-1. Check the current figure- and size-specific listing before relying on an approval.
Where dimensions permit, genuine TUPY fittings carry cast markings such as the factory mark and nominal size. Check the figure-specific catalogue and packaging as well. The threads are clean and free of burrs, and the galvanised coating is even. The surest check is to weigh the piece and compare it with the weight table on this page; counterfeit pieces usually come out lighter than the official catalogue weight.
Use the request a quote page at /request-a-quote and tell us the figure number (90R), the sizes and the quantities you need. Our Dubai office will come back with a quotation, the current stock position and a lead time. Amini Building Materials Trading L.L.C is the exclusive agent of TUPY S.A. in the Middle East and supplies the region from Dubai.
