NSN 4820-01-221-3544 · NIIN 012213544 · Part number P8821-03-25
Dynex/rivett Corp Power Units and Systems · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 50988
Government record, cited
NSN 4820-01-221-3544 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-221-3544. Manufacturer of record part number: P8821-03-25.
Also searched as4820-01-221-3544 ·
4820012213544 ·
NIIN 012213544 ·
01-221-3544 ·
FSC 4820 Valves, Nonpowered · CAGE 50988 · P8821-03-25
Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Mounting Facility: BULKHEAD
Media for Which Designed: HYDRAULIC FLUID, MINERAL BASE SINGLE RESPONSE
Material: IRON CAST BODY
Valve Operation Method: AUTOMATIC
1 manufacturer part number on file
Identification
NSN: 4820-01-221-3544
NIIN: 012213544
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: P8821-03-25
Manufacturer: Dynex/rivett Corp Power Units and Systems
General Description
The Valve,safety Relief, cataloged under National Stock Number 4820-01-221-3544, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dynex/rivett Corp Power Units and Systems. Government technical data includes 6 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
4820-01-221-3544
Primary Part Number
P8821-03-25
Item Name
Valve,safety Relief
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Dynex/rivett Corp Power Units and Systems
Status
ACTIVE
Flow Control Device
POPPET
Operating Pressure
3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
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 4820-01-221-3544?
NSN 4820-01-221-3544 is a Valve,safety Relief, manufactured by Dynex/rivett Corp Power Units and Systems, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-221-3544?
NSN 4820-01-221-3544 has 1 manufacturer part number on file: P8821-03-25 (Dynex/rivett Corp Power Units and Systems).
What are the specifications of P8821-03-25?
Key specifications for P8821-03-25: Flow Control Device: POPPET; Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Mounting Facility: BULKHEAD; Media for Which Designed: HYDRAULIC FLUID, MINERAL BASE SINGLE RESPONSE. 6 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-221-3544 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.