Pressure Vessel Engineering Hub
Pressure Vessel Engineering Hub
Calculate pressure vessel volume, dished head dimensions, tank capacity and ASME vessel sizing. Engineering formulas, head type reference, and calculation guides for vessel design.
Core Pressure Vessel Formulas
V_shell = pi x (D/2)^2 x L
Cylindrical shell volume
V_head = pi x D^3 / 24
One 2:1 elliptical head (ASME standard)
V_total = V_shell + 2 x V_head
Total vessel volume = shell + 2 heads
MAWP = 2 x S x E x t / (D - 0.2t)
ASME maximum allowable working pressure
ASME Vessel Head Types
| Head Type | Volume Formula | Depth | Notes |
|---|---|---|---|
| 2:1 Elliptical (ASME Standard) | V = pi x D^3 / 24 (per head) | h = D/4 | Most common for ASME vessels |
| Hemispherical | V = pi x D^3 / 12 (per head) | h = D/2 | Lowest stress, highest volume |
| Torispherical (ASME F&D) | V approx 0.1 x D^3 (per head) | h = 0.0694 x D | Shallowest standard head |
| Flat | V = 0 | h = 0 | No additional volume, highest stress |