Technical and dimensional specifications
Dished heads
TYPE A DISHED HEAD
Dished-only heads
| D | R | s |
|---|---|---|
| 400–5000 | 2 x D 1.5 x D 1 x D 0.8 x D |
3–40 |
| R = 1.5 x D | |
| SV | D x 1.015 |
| HT | D x 0.075 + S |
| R = D | |
| SV | D x 1.04 |
| HT | D x 0.140 + S |
TYPE B DISHED HEAD
Shallow-flanged flat heads
Technical and dimensional specifications
| D | r | h | s |
|---|---|---|---|
| 500–5000 | 50 | ≥ 5 x s | 3–22 |
| SV | D + 50 + 2h |
| Ht | 50 + h + s |
TYPE B PRESSED HEAD
Technical and dimensional specifications
TYPE C DISHED HEAD
Deep-flanged flat heads
Technical and dimensional specifications
| D | r | h | s |
|---|---|---|---|
| 500–5000 | D/10 | ≥ 5 x s | 3–22 |
| SV | D x 1.09 + 2h |
| Ht | D x 0.1 + h + s |
TYPE D DISHED HEAD
Shallow-dished standard heads
Technical and dimensional specifications
| D | R | r | h | s |
|---|---|---|---|---|
| 500–3050 | 1.5–2 D | 50 | ≥ 5 x s | 3–25 |
| 3100–3450 | 1.5–2 D | 80 | ≥ 5 x s | 3–25 |
| 3500–5000 | 1.5–2 D | 100 | ≥ 5 x s | 3–25 |
| R = 2D r = 50 | |
| SV | D x 1.03 + 2h |
| Ht | D x 0.090 + h + s |
TYPE DE DISHED HEAD
Medium-dished standard heads
Technical and dimensional specifications
| D | R | r | h | s |
|---|---|---|---|---|
| 500–5000 | D | 50 | ≥ 5 x s | 3–22 |
TYPE E DISHED HEAD
Torispherical or decinormal heads
Technical and dimensional specifications
| D | R | r | h | s |
|---|---|---|---|---|
| 320–5000 | D | D/10 | ≥ 5 x s | 3–25 |
| SV | D x 1.11 + 2h |
| Ht | D x 0.194 + h + s |
TYPE F DISHED HEAD
Semi-elliptical heads
Technical and dimensional specifications
| D | R | r | h | s |
|---|---|---|---|---|
| 500–4000 | 0.8 X D | D/6.5 | ≥ 5 x s | 3–22 |
| SV | D x 1.16 + 2h |
| Ht | D x 0.25 + h + s |
TYPE G DISHED HEAD
Reverse-flanged dished heads
Technical and dimensional specifications
| D | R | r | h | s |
|---|---|---|---|---|
| 500–5000 | 0D | v | * | 3–22 |
* upon request
TYPE H DISHED HEAD
Flat-flanged dished heads
Technical and dimensional specifications
| D | R | h | s |
|---|---|---|---|
| 500–5000 | * | ≥ 5 x S | 3–30 |
* upon request
TYPE I DISHED HEAD
Cones
Technical and dimensional specifications
| D | r | Ht | h | s | d |
|---|---|---|---|---|---|
| 500–5000 | * | max 1150 | ≥ 5 x S | 3–32 | * |
Also available as a cone without flanging (open cone)
* upon request
DISHED HEADS FOR DOUBLE-WALLED TANKS
Technical and dimensional specifications
| 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 |
PRESSED OVAL HEAD
Technical and dimensional specifications
Standard size 700x1500x2
This head, pressed with a suitable rib that increases its strength even at low thicknesses, is manufactured from prime quality plate and stainless steel (upon request). The trimming performed after pressing also allows, upon request, the possibility of creating a beveled edge on the straight flange which, in addition to providing greater strength to the head, facilitates welding with improved sealing guarantee.
