GB/T 585‑2008 Marine Cast Steel Flanged SDNR Valves
Type A,Type AS,Type B,Type BS
GB/T 584 refers to a national standard number, not a product model. The current version is GB/T 585‑2008, superseding the old version GB/T 585‑1999. It specifies requirements for design, manufacture, inspection and acceptance of marine cast steel flanged globe valves for ship piping systems.
Basic Parameters
- Types
- Type A: Straight‑through; Type B: Angle pattern (old national standard, flange per GB/T 569 marine flange)
- Type AS: Straight‑through; Type BS: Angle pattern (per GB/T 2501, equivalent to ISO flange, suitable for export‑oriented vessels)
- Nominal Pressure PN: 1.0, 1.6, 2.5, 4.0, 6.4 MPa
- Nominal Diameter DN: DN20～DN300
- Applicable Media: Fresh water, sea water, fuel oil, lubricating oil, steam
- PN1.0‑2.5: Medium temperature ≤300 °C
- PN4.0‑6.4: Medium temperature ≤400 °C
- Typical Materials
- Valve body / Bonnet: ZG275‑485 cast steel
- Valve stem: 20Cr13 stainless steel
- Valve disc: carbon steel, seating face hard‑faced with stainless steel
Matching Flange Standards
- Type A/B flanges: GB/T 569 (marine integral flange)
- Type AS/BS flanges: GB/T 2501 (equivalent to ISO 2084)
Comparison with Related Series
- GB/T 584‑2008: Cast steel globe valve (stop valve)
- GB/T 585‑2008: Cast steel check valve, frequently purchased together as a set
GB/T584AS Globe Valve
Technical Feature
Design Standard GB/T585-2008
Face to Face Standard GB/T11698-2008(ISO5752)
Test Standard GB/T600-2008(ISO5208)
Flange Standard GB/T2501-2010(ISO2084)
Application Used for marine pipelines of Fresh Water, air or gas, Fuel Oil, Lub.oil, and Steam at 205℃or below
Material
Part Nr. Class S Class B
1- Body Cast Steel ZG275-485 Cast Iron ZG275-485
2- Seat Stainless Steel 2Cr13 Bronze ZCuSn10Zn2
3- Disc Stainless Steel 2Cr13 Brass QAl9-2
4- Stem Stainless Steel 1Cr12 Bronze ZCuAl9Mn2
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