NSN 4820-01-343-6503 · NIIN 013436503 · Part number 2501 CGA 590
Liquid Air Corp Alphagaz Div Corporate and Divisional Office · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 42568
Government record, cited
NSN 4820-01-343-6503 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-343-6503. Manufacturer of record part number: 2501 CGA 590.
Manufacturer of record: Liquid Air Corp Alphagaz Div Corporate and Divisional Office
Identification
NSN: 4820-01-343-6503
NIIN: 013436503
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 2501 CGA 590
Manufacturer: Liquid Air Corp Alphagaz Div Corporate and Divisional Office
General Description
The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-343-6503, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Liquid Air Corp Alphagaz Div Corporate and Divisional Office. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-343-6503
Primary Part Number
2501 CGA 590
Item Name
Valve,regulating,fluid Pressure
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Liquid Air Corp Alphagaz Div Corporate and Divisional Office
Liquid Air Corp Alphagaz Div Corporate and Divisional Office (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
Frequently Asked Questions
What is NSN 4820-01-343-6503?
NSN 4820-01-343-6503 is a Valve,regulating,fluid Pressure, manufactured by Liquid Air Corp Alphagaz Div Corporate and Divisional Office, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-343-6503?
NSN 4820-01-343-6503 has 1 manufacturer part number on file: 2501 CGA 590 (Liquid Air Corp Alphagaz Div Corporate and Divisional Office).
What are the specifications of 2501 CGA 590?
Key specifications for 2501 CGA 590: Flow Control Device: DIAPHRAGM; Material: COPPER ALLOY BODY. 2 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-343-6503 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.