The TUPY Brazil tank fitting (figure 350) is designed to be mounted through the wall of a water tank and to seal the connection reliably.
| Figure number | 350 |
| Size range | 1/2in to 1 1/2in |
| Finish | Galvanised |
| Thread | BSP |
| Standard | Industrial malleable cast iron |
| Maximum working pressure | — |
| Material | Malleable cast iron |






TUPY Brazil fittings are manufactured and inspected under the supervision of the international bodies above, and carry recognised approvals for use in fire protection, water and gas networks.
The dimension letters follow the technical drawing above. Weights are per single fitting, in kilograms.
| Nominal diameter | Dimensions (mm) | Weight (kg) | ||||
|---|---|---|---|---|---|---|
| inch | mm | a | c | e | Galvanised | Black |
| 1/2" | 15 | 12 | 32 | 49 | 0.162 | — |
| 3/4" | 20 | 15 | 34 | 60 | 0.283 | — |
| 1" | 25 | 16 | 40 | 70 | 0.409 | — |
| 1.1/4" | 32 | 19 | 45 | 82 | 0.587 | — |
| 1.1/2" | 40 | 21 | 49 | 94 | 0.856 | — |
| 2" | 50 | 24 | 58 | 117 | 1.450 | — |
| 2.1/2" | 65 | 27 | 66 | 134 | 2.060 | — |
Source: the official TUPY Brazil BSP threaded fittings catalogue.
Need pricing for this fitting?
Send us the figures and sizes you need and our Dubai office will come back with a quotation, stock position and lead time.
A tank fitting is the part that mounts on the body of a water tank and takes the pipework outlet off it. Unlike an ordinary fitting it has to carry the head of water and stay completely watertight where it meets the tank wall.
It suits all common water tanks — polyethylene, PVC and fibreglass. The engineered form gives a full seal and keeps the connection from weeping.
The usual failure in a low-quality tank fitting is cracking at the connection, either from over-tightening or from the stress of the water load. The TUPY tank fitting is made in malleable cast iron to industrial standard, which resists cracking and impact.
Its coating is in two layers: hot-dip galvanising plus an industrial paint, for maximum resistance to permanent damp and hard site conditions. Supplied in sizes 1/2in to 1 1/2in.
The TUPY Brazil Tank Fitting / Flange is made in 7 sizes, from 1/2" to 2.1/2". 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" size, for example, weighs 0.409 kg. 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 350 tank fitting is designed to connect a pipe to the wall of a tank or water cistern. It passes through the tank wall and is secured from the outside with a sealing washer and a nut. The hole diameter needed in the tank wall for each size is given in the dimensions table on this page.
According to TUPY's technical catalogue, the working pressure of TUPYBSP fittings is 25 bar between −20 °C and +120 °C. It falls to 20 bar above 300 °C, and intermediate values are interpolated. The design pressure in the hydrostatic test is 100 bar for sizes up to 4 in and 64 bar for 5 in and 6 in.
The TUPY Tank Fitting / Flange is manufactured to Industrial malleable cast iron. TUPY malleable cast iron fittings are built to ISO 49, EN 10242 and ABNT NBR 6943, and their threads follow ISO 7-1. The factory certificates can be seen in the standards and certifications section on this page.
On the body of every genuine TUPY fitting the factory mark, the figure number and the size are raised in the casting, not etched or printed. 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 (350), 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.