NSN 4820-01-668-7720 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-668-7720. Manufacturer of record part number: V039910100.
The Valve,check, cataloged under National Stock Number 4820-01-668-7720, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Vernay Laboratories Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
NSN 4820-01-668-7720 is a Valve,check, manufactured by Vernay Laboratories Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-668-7720?
NSN 4820-01-668-7720 has 2 manufacturer part numbers on file: V039910100 (Vernay Laboratories Inc), 248-8592622 FN 10 (Naval Sea Systems Command).
What NSN replaces 4820-01-668-7720?
5 possible matches (shared part number, not a government interchangeability claim): 3040-01-668-8728, 5305-01-668-8729, 3110-01-669-5744. Verify interchangeability with system specifications before substitution.
Is NSN 4820-01-668-7720 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.