PartsTable TECHNICAL DATA SHEET
NSN 4820-01-452-9934Government record, cited

Disk, Valve4820-01-452-9934

NSN 4820-01-452-9934 · NIIN 014529934 · Part number 8958-001-031
Velan Valve Corp. · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 57574
Government record, cited
NSN 4820-01-452-9934 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-452-9934. Manufacturer of record part number: 8958-001-031.
Also searched as  4820-01-452-9934 · 4820014529934 · NIIN 014529934 · 01-452-9934 · FSC 4820 Valves, Nonpowered · CAGE 57574 · 8958-001-031 · 88326 8.0IN PC 04D
Nearby stock numbers  ·
Features
  • Disk,valve — FSC 4820
  • Pressure Rating: 600.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
  • Style Designator: SPLIT WEDGE
  • Seat Angle: 10.0 DEGREES NOMINAL
  • Media for Which Designed: STEAM
  • Material: STEEL CORROSION RESISTING
  • 2 manufacturer part numbers on file
  • Manufacturer of record: Velan Valve Corp.
Identification
  • NSN: 4820-01-452-9934
  • NIIN: 014529934
  • FSC: 4820 — Valves, Nonpowered
  • FSG: 48 — Valves
  • Primary part number: 8958-001-031
  • Manufacturer: Velan Valve Corp.
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-452-9934, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Velan Valve Corp.. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-452-9934
Primary Part Number8958-001-031
Item NameDisk,valve
FSC / FSG4820 / 48 — Valves, Nonpowered
ManufacturerVelan Valve Corp.
StatusACTIVE
Pressure Rating600.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
Style DesignatorSPLIT WEDGE
Seat Angle10.0 DEGREES NOMINAL
Media for Which DesignedSTEAM
MaterialSTEEL CORROSION RESISTING
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
88326 8.0IN PC 04D Velan Valve Corp. (USA)
8958-001-031 PRIMARY Velan Valve Corp. (USA)
No interchangeability data on file.
Other items in FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097
4820-00-000-0097 · Item name not on file
4820-00-001-0010
VALVE,ROTARY,SELECTOR
4820-00-001-0020
4820-00-001-0020 · Item name not on file
4820-00-001-0021
4820-00-001-0021 · Item name not on file
4820-00-001-0032
4820-00-001-0032 · Item name not on file
4820-00-001-0037
VALVE,SAFETY RELIEF
4820-00-001-0042
4820-00-001-0042 · Item name not on file
4820-00-001-1230
4820-00-001-1230 · Item name not on file
Related Parts in Valves
4820-00-000-0097
4820-00-000-0097 · Item name not on file
4820-00-001-0010
VALVE,ROTARY,SELECTOR
8171E-1/4HS2
4820-00-001-0020
4820-00-001-0020 · Item name not on file
4820-00-001-0021
4820-00-001-0021 · Item name not on file
4820-00-001-0032
4820-00-001-0032 · Item name not on file
4820-00-001-0037
VALVE,SAFETY RELIEF
D559A3M2
4820-00-001-0042
4820-00-001-0042 · Item name not on file
4820-00-001-1230
4820-00-001-1230 · Item name not on file

Frequently Asked Questions

What is NSN 4820-01-452-9934?

NSN 4820-01-452-9934 is a Disk,valve, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-452-9934?

NSN 4820-01-452-9934 has 2 manufacturer part numbers on file: 88326 8.0IN PC 04D (Velan Valve Corp.), 8958-001-031 (Velan Valve Corp.).

What are the specifications of 8958-001-031?

Key specifications for 8958-001-031: Overall Height: 7.9375 INCHES NOMINAL IN; Pressure Rating: 600.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Style Designator: SPLIT WEDGE; Seat Angle: 10.0 DEGREES NOMINAL. 5 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-452-9934 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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