NSN 4820-01-559-0392 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-559-0392. Manufacturer of record part number: FP2211.
The Valve,safety Relief, cataloged under National Stock Number 4820-01-559-0392, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Critical Solutions International, Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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.
Technical Specifications
Parameter
Value
NSN
4820-01-559-0392
Primary Part Number
FP2211
Item Name
Valve,safety Relief
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Critical Solutions International, Llc
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5340-01-559-041217030001POSSIBLE MATCH
COVER,ACCESS
Possible match (shared part number)Booyco Engineering Pty Ltd
5340-01-559-041912060009POSSIBLE MATCH
CLAMP,BLOCK
Possible match (shared part number)Booyco Engineering Pty Ltd
4130-01-559-0459FA0465POSSIBLE MATCH
EVAPORATOR COIL,REFRIGERATION
Possible match (shared part number)Critical Solutions International Inc Div Critical Solutions International Inc Sa
4730-01-559-540211040002POSSIBLE MATCH
ADAPTER,STRAIGHT,HOSE TO BOSS
Possible match (shared part number)Booyco Engineering Pty Ltd
5340-01-559-540615100374POSSIBLE MATCH
COVER,ACCESS
Possible match (shared part number)Booyco Engineering Pty Ltd
NSN 4820-01-559-0392 is a Valve,safety Relief, manufactured by Critical Solutions International, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-559-0392?
NSN 4820-01-559-0392 has 1 manufacturer part number on file: FP2211 (Critical Solutions International, Llc).
What NSN replaces 4820-01-559-0392?
5 possible matches (shared part number, not a government interchangeability claim): 5340-01-559-0412, 5340-01-559-0419, 4130-01-559-0459. Verify interchangeability with system specifications before substitution.
What are the specifications of FP2211?
Key specifications for FP2211: Part Name Assigned by Controlling Agency: VALVE EXPANSION TN2; End Item Identification: 2355-01-542-7908 INTERIM VCHICLE MINE DETECTION. 0 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-559-0392 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.