Standard and scope
Standard, product family and subcategory can be checked before inquiry.
Flanged Nodular Iron Gate Valve For Oil Tanker (CB/T3591-94) is designed to CB/T 3591-94 with flanged ends. nominal size is DN80-400; pressure rating is 1.0 MPa; suitable media are seawater, freshwater. Confirm size, class, materials and documentation requirements with your inquiry.
Lead time and Incoterms confirmed by order; MTC 3.1 scope confirmed during RFQ
Flanged Nodular Iron Gate Valve For Oil Tanker (CB/T3591-94) is designed to CB/T 3591-94 with flanged ends. nominal size is DN80-400; pressure rating is 1.0 MPa; suitable media are seawater, freshwater. Confirm size, class, materials and documentation requirements with your inquiry.
Standard, product family and subcategory can be checked before inquiry.
Check valve configuration, connection and installation orientation against the structure drawing.
MTC, pressure testing, records and supplementary inspection scope are confirmed by product and order requirement.
Within marine flanged gate-valve standards, CB/T 3591-94 identifies the nodular cast-iron oil-tanker series. Its material, body types and service scope distinguish it from generic cast-iron, cast-steel, or bronze pages.
| Decision field | This model | Confirmation boundary |
|---|---|---|
| Standard and body type | CB/T 3591-94; Type A/AS or Type B/BS | Confirm the exact body type and structure against the drawing and project specification |
| Material variant | Nodular cast iron QT400-15 body and matching internals | Do not substitute cast steel or bronze automatically; compare medium, corrosion, pressure and temperature requirements |
| Connection and service | Flanged, DN80-400, 1.0 MPa, for seawater or freshwater | Verify flange details, pipeline loads, installation position and certificate scope by order |
Compare material variants in marine gate valves, and use the pressure and flange guide before changing standards or materials.
| Parameter | Value |
|---|---|
| Product | Flanged Nodular Iron Gate Valve For Oil Tanker |
| Design standard | CB/T 3591-94 |
| Body type | Type A/AS, Type B/BS |
| Body material | nodular cast iron (QT400-15) |
| End connection | Flanged |
| Item | Specification |
|---|---|
| Nominal pressure | 1.0 MPa |
| Nominal size | DN80-400 |
| Suitable media | seawater, freshwater |
| Part | Material |
|---|---|
| Body, Bonnet | nodular cast iron (QT400-15) |
| Plug core | cast steel (ZG230-450) |
| Stem, Nut | CuA19Mn2 |
| Seal ring | stainless steel (1Cr18Ni9TiN2Cr13) |
Confirm material, flow velocity and installation position before seawater, ballast or sea-suction service.
For shipboard freshwater isolation, check or media-control duties.
Export packaging and protection are planned by product type, transport mode and order requirements; palletizing can be arranged.
Lead time, Incoterms and payment terms are confirmed with the specification, quantity, certificate scope and production schedule.
MTC, test records, PMI, NDT and class-certificate scope are confirmed by product and order requirement.
Customer-nominated classification society or third-party inspection can be arranged when specified in the order.
