DISHED HEADS FOR DOUBLE-WALLED TANKS
DISHED HEADS FOR DOUBLE-WALLED TANKS

Specifications summary
Drawing legend
Tolerances
| D | R | r | h | Ht |
|---|---|---|---|---|
| 1258 | 1250 | 50 | 30 | 230 |
| 1508 | 1500 | 50 | 30 | 265 |
| 1908 | 1900 | 70 | 30 | 330 |
| 2512 | 2500 | 95 | 30 | 425 |
| 3012 | 3000 | 180 | 30 | 545 |
Outside diameter
Straight flange height
Inside diameter
Total external height = H+h+s
Thickness
Internal height excluding straight flange
Crown radius
Blank diameter for head production
Knuckle radius
Head volume in liters
Regarding pressed heads, the applied tolerances are those of the regulations in force (specifically the AFNOR NFE 81-100/1997 standard).
For flanged heads, they are as follows:
On the outside diameter:
< Ø 2000 = ± 2 ‰ · Ø
> Ø 2000 = ± 3 ‰ · Ø
Out-of-roundness (maximum difference between minimum and maximum diameter)
± 3 ‰ · Ø
Total height (for untrimmed heads)
– 0 +25 mm
Steel plates
Dimensional and shape tolerances for the reference plates, unless otherwise agreed upon in the contract, are in accordance with UNI EN 10025 and UNI EN 10051 standards.
It is nonetheless possible to request tighter tolerances at the time of ordering, the feasibility of which will be assessed.
Drawing legend
Outside diameter
Straight flange height
Inside diameter
Total external height = H+h+s
Thickness
Internal height excluding straight flange
Crown radius
Blank diameter for head production
Knuckle radius
Head volume in liters
Specifications summary
| D | R | r | h | Ht |
|---|---|---|---|---|
| 1258 | 1250 | 50 | 30 | 230 |
| 1508 | 1500 | 50 | 30 | 265 |
| 1908 | 1900 | 70 | 30 | 330 |
| 2512 | 2500 | 95 | 30 | 425 |
| 3012 | 3000 | 180 | 30 | 545 |
Tolerances
Regarding pressed heads, the applied tolerances are those of the regulations in force (specifically the AFNOR NFE 81-100/1997 standard).
For flanged heads, they are as follows:
On the outside diameter:
< Ø 2000 = ± 2 ‰ · Ø
> Ø 2000 = ± 3 ‰ · Ø
Out-of-roundness (maximum difference between minimum and maximum diameter)
± 3 ‰ · Ø
Total height (for untrimmed heads)
– 0 +25 mm
Steel plates
Dimensional and shape tolerances for the reference plates, unless otherwise agreed upon in the contract, are in accordance with UNI EN 10025 and UNI EN 10051 standards.
It is nonetheless possible to request tighter tolerances at the time of ordering, the feasibility of which will be assessed.
SINCE 1965 TECNOFONDI SPA HAS BEEN PRODUCING DISHED HEADS, RELY ON THE INDUSTRY LEADERS
Main applications

THERMO-HYDRAULIC

FARMING

FOOD

CHEMICAL AND PHARMACEUTICAL
