NSN 4820-01-452-8221 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-452-8221. Manufacturer of record part number: ZM2RV02A320B.
Connection Style: PLAIN (SCREW-IN CARTRIDGE) ALL ENDS
Connection Type: THREADED CARTRIDGE ALL ENDS
Style Designator: SCREW-IN CARTRIDGE
Thread Direction: RIGHT-HAND ALL ENDS
Nominal Thread Size: 0.250 INCHES ALL ENDS IN
Disk Loading Method: SPRING
Identification
NSN: 4820-01-452-8221
NIIN: 014528221
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: ZM2RV02A320B
Manufacturer: Zevco Inc
General Description
The Valve,safety Relief, cataloged under National Stock Number 4820-01-452-8221, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Zevco Inc. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
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
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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
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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 4820-01-452-8221?
NSN 4820-01-452-8221 is a Valve,safety Relief, manufactured by Zevco Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-452-8221?
NSN 4820-01-452-8221 has 1 manufacturer part number on file: ZM2RV02A320B (Zevco Inc).
What are the specifications of ZM2RV02A320B?
Key specifications for ZM2RV02A320B: Flow Control Device: DISK; Connection Style: PLAIN (SCREW-IN CARTRIDGE) ALL ENDS; Connection Type: THREADED CARTRIDGE ALL ENDS; Style Designator: SCREW-IN CARTRIDGE. 10 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-452-8221 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.