Melloy 2023 Horizontal Pressure Vessels — 3-Unit Lot
Offered as one three-vessel lot of large horizontal Melloy Industrial Services pressure-vessel assemblies. The three units were manufactured in 2023 and have individual nameplate maximum allowable working pressures from 1,012 psig to 1,898 psig at 400 °F.
Listing Summary
Offered as one three-vessel lot of large horizontal Melloy Industrial Services pressure-vessel assemblies. The three units were manufactured in 2023 and have individual nameplate maximum allowable working pressures from 1,012 psig to 1,898 psig at 400 °F.
The lot includes two closely rated vessels and one higher-pressure vessel. Each is supplied with multiple flanged nozzles, covered connection faces, and saddle supports, as photographed.
Individual Vessel Nameplate Data
| Item | Serial number | CRN | Year | MAWP at 400 °F | MDMT | Hydrotest pressure | Empty weight |
| Vessel 1 | 2621074-02 | Z6135.2 | 2023 | 1,012 psig | −20 °F at 1,012 psig | 1,504 psig | 11,123 lb / 5,045 kg |
| Vessel 2 | 2621074-03 | Z6136.2 | 2023 | 1,019 psig | −20 °F at 1,019 psig | 1,580 psig | 9,857 lb / 4,471 kg |
| Vessel 3 | 2621074-04 | Z6134.2 | 2023 | 1,898 psig | −20 °F at 1,898 psig | 2,886 psig | 10,704 lb / 4,855 kg |
| Three-vessel lot | — | — | — | — | — | — | 31,684 lb / 14,371 kg total empty nameplate weight |
Common Physical Nameplate Markings
•Manufacturer: Melloy Industrial Services Inc.
•Code markings visible on the plates: ASME U, RT1, and HT
•Corrosion allowance: 0.125 in. / 3.2 mm
•Maximum allowable external pressure field: blank on the photographed nameplates
The values above are copied from the physical nameplates. They are historical equipment data for identification and do not establish current pressure-service suitability, a current inspection status, or a permit to operate.
Configuration and Visible Features
Each vessel is a horizontal, saddle-supported assembly with dished heads and multiple flanged branch connections. The photographs show protective coverings on the principal connection faces. Vessel 2 is shown with a 6.69 m measurement annotation in the supplied photograph; buyers must independently verify all dimensions, nozzle orientations, flange details, and lifting geometry before arranging installation.
A visible stencil on Vessel 1 reads “PWHT — DO NOT WELD.” This instruction should be treated as material to the vessel’s engineering history. Any repair, alteration, welding, or re-rating work must be reviewed and approved by a qualified pressure-equipment engineer and the applicable authority before it is undertaken.