For D = 500 ÷ 800, the maximum thickness is 8 mm.
DE TYPE DISHED HEADS
STANDARD MEDIUM-CROWNED DISHED HEADS
Specifications summary
Drawing legend
Tolerances
| D | R | r | h | s |
|---|---|---|---|---|
| 500 ÷ 5000 | D | 50 | ≥ 5 x s | 3 ÷ 22 |
D
Outside diameter
h
Straight flange height
Di
Inside diameter
Ht
Total outside height = H+h+s
s
Thickness
H
Inside height without straight flange
R
Crown radius
Sv
Blank diameter for the dished head
r
Knuckle radius
V
Head capacity in liters
Regarding pressed heads, the tolerances applied are those of the regulations in force (specifically the AFRON 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 non-trimmed heads)
– 0 +25 mm
Steel plates
The dimensional and shape tolerances of the plates to be taken as a reference, unless otherwise agreed upon in the contract, are in accordance with the UNI EN 10025 and UNI EN 10051 standards.
It is however possible to request tighter tolerances at the time of ordering, the feasibility of which will be assessed.
Drawing legend
D
Outside diameter
h
Straight flange height
Di
Inside diameter
Ht
Total outside height = H+h+s
s
Thickness
H
Inside height without straight flange
R
Crown radius
Sv
Blank diameter for the dished head
r
Knuckle radius
V
Head capacity in liters
Specifications summary
| D | R | r | h | s |
|---|---|---|---|---|
| 500 ÷ 5000 | D | 50 | ≥ 5 x s | 3 ÷ 22 |
For D = 500 ÷ 800, the maximum thickness is 8 mm.
Tolerances
Regarding pressed heads, the tolerances applied are those of the regulations in force (specifically the AFRON 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 non-trimmed heads)
– 0 +25 mm
Steel plates
The dimensional and shape tolerances of the plates to be taken as a reference, unless otherwise agreed upon in the contract, are in accordance with the UNI EN 10025 and UNI EN 10051 standards.
It is however 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
Water accumulator, autoclaves, boilers
FARMING
Lliquid manure spreader, slurry tanks, filters for water irrigation
FOOD
Tanks and plants for the milk and cheese sector, wine industry, production of fruit juice and beer
CHEMICAL AND PHARMACEUTICAL
Agitators, mixers, reactors
FABRIC INDUSTRY
Tanks for the treatment of fabrics
THE DISHED HEAD SUITABLE FOR EVERY NEED
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