Standard and scope
Standard, product family and subcategory can be checked before inquiry.
Marine Flanged Cast Steel Over Board Stop Check Valve (GB/T1853-2008) is designed to GB/T 1853-2008 with flanged ends. nominal size is DN40-350; pressure rating is 0.6 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
Marine Flanged Cast Steel Over Board Stop Check Valve (GB/T1853-2008) is designed to GB/T 1853-2008 with flanged ends. nominal size is DN40-350; pressure rating is 0.6 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.
| Parameter | Value |
|---|---|
| Product | Marine Flanged Cast Steel Over Board Stop Check Valve |
| Design standard | GB/T 1853-2008 |
| Body type | Type A/AS, Type B/BS |
| Body material | cast steel |
| End connection | Flanged |
| Item | Specification |
|---|---|
| Nominal pressure | 0.6 MPa |
| Nominal size | DN40-350 |
| Suitable media | seawater, freshwater |
| Part | Material |
|---|---|
| Body, Bonnet | cast steel |
| Disc, Seat | cast tin bronze (ZCuSn5Pb5Zn5) |
| Stem | aluminum bronze (CuA19Mn2) |
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.
