NSN 4820-01-546-8747 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-546-8747. Manufacturer of record part number: VL399-101.
Also searched as4820-01-546-8747 ·
4820015468747 ·
NIIN 015468747 ·
01-546-8747 ·
FSC 4820 Valves, Nonpowered · CAGE 0ZNA9 · VL399-101
Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
Valve Operation Method: AUTOMATIC
1 manufacturer part number on file
Manufacturer of record: Vernay Laboratories Inc
Identification
NSN: 4820-01-546-8747
NIIN: 015468747
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: VL399-101
Manufacturer: Vernay Laboratories Inc
General Description
The Valve,check, cataloged under National Stock Number 4820-01-546-8747, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Vernay Laboratories Inc. Government technical data includes 3 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.
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
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4820-00-001-0020 · Item name not on file
4820-00-001-0021
4820-00-001-0021 · Item name not on file
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4820-00-001-0032 · Item name not on file
4820-00-001-0037
VALVE,SAFETY RELIEF
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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 4820-01-546-8747?
NSN 4820-01-546-8747 is a Valve,check, manufactured by Vernay Laboratories Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-546-8747?
NSN 4820-01-546-8747 has 1 manufacturer part number on file: VL399-101 (Vernay Laboratories Inc).
What are the specifications of VL399-101?
Key specifications for VL399-101: Style Designator: STRAIGHT THRU; Special Features: SEAT THICKNESS DETERMINES/CHANGES CRACKING PRESSURE; MATERIAL NITRILE; Part Name Assigned by Controlling Agency: UMBRELLA CHECK VALVE; End Item Identification: 4140-01-223-0052, FAN, VOLUTE ASSEMBLY. 3 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-546-8747 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.