Standard and scope
Standard, product family and subcategory can be checked before inquiry.
Marine Forged Steel Male Thread Stop Valve (GB594-83) is designed to GB594-83 with male thread ends. nominal size is DN15-32；6-32; pressure rating is 4.0 MPa; suitable media are freshwater, lubricating oil, fuel oil, steam; steam up to 400°C. 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 Forged Steel Male Thread Stop Valve (GB594-83) is designed to GB594-83 with male thread ends. nominal size is DN15-32；6-32; pressure rating is 4.0 MPa; suitable media are freshwater, lubricating oil, fuel oil, steam; steam up to 400°C. 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 the threaded marine stop-valve series, GB594-83 identifies the forged-steel male-thread version. Size or thread form alone does not establish interchangeability with bronze or flanged models.
| Decision field | This model | Confirmation boundary |
|---|---|---|
| Standard and structure | GB594-83 forged-steel male-thread stop valve; Type A, B, or L | Confirm the body type, flow direction, thread detail and installation access with the drawing |
| Size and rating | DN15-32 / 6-32; 4.0 MPa | Check working pressure, temperature limit and pipeline loads before substitution |
| Material and service | Q235-A / 2Cr13 material combination for freshwater, lubricating oil, fuel oil, or steam up to 400°C | Verify material compatibility, sealing requirements and certificate scope by product and order |
Compare related threaded and flanged models in marine globe and stop-check valves, and use the pressure and flange guide to confirm substitution limits.
| Parameter | Value |
|---|---|
| Product | Marine Forged Steel Male Thread Stop Valve |
| Design standard | GB594-83 |
| Body type | Type A, Type B, Type L |
| Body material | stainless steel / carbon steel (Q235-A / 2Cr13) |
| End connection | Male thread |
| Item | Specification |
|---|---|
| Nominal pressure | 4.0 MPa |
| Nominal size | DN15-32；6-32 |
| Suitable media | freshwater, lubricating oil, fuel oil, steam; steam up to 400°C |
| Part | Material |
|---|---|
| Body | stainless steel / carbon steel (Q235-A / 2Cr13) |
| Bonnet | carbon steel (Q235-A) |
| Disc, Stem | stainless steel (2Cr13) |
For shipboard freshwater isolation, check or media-control duties.
Confirm cleanliness and sealing compatibility for lubricating-oil service.
Confirm pressure, temperature and sealing material for fuel-oil service.
Steam service is checked against temperature limits and pressure class.
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.
