NSN 4820-01-191-8521 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-191-8521. Manufacturer of record part number: FXDA LAV9-0.
General Characteristics Item Description: STEEL; FACTORY SET TUNING ADJUSTMENT; VITON SEAL; FLOW RATE 9.0 GPM; MAXIMUM SYSTEM PRESSURE 3000 PSI; 3.740 IN. L IN
2 manufacturer part numbers on file
Manufacturer of record: Sun Hydraulics Corporation
Identification
NSN: 4820-01-191-8521
NIIN: 011918521
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: FXDA LAV9-0
Manufacturer: Sun Hydraulics Corporation
General Description
The Cartridge,valve Regulator, cataloged under National Stock Number 4820-01-191-8521, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Sun Hydraulics Corporation. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-191-8521
Primary Part Number
FXDA LAV9-0
Item Name
Cartridge,valve Regulator
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Sun Hydraulics Corporation
Status
ACTIVE
General Characteristics Item Description
STEEL; FACTORY SET TUNING ADJUSTMENT; VITON SEAL; FLOW RATE 9.0 GPM; MAXIMUM SYSTEM PRESSURE 3000 PSI; 3.740 IN. L IN
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 4820-01-191-8521?
NSN 4820-01-191-8521 is a Cartridge,valve Regulator, manufactured by Sun Hydraulics Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-191-8521?
NSN 4820-01-191-8521 has 2 manufacturer part numbers on file: JCM-11481-005 (Strike Weapons and Unmanned Aviation), FXDA LAV9-0 (Sun Hydraulics Corporation).
What are the specifications of FXDA LAV9-0?
Key specifications for FXDA LAV9-0: General Characteristics Item Description: STEEL; FACTORY SET TUNING ADJUSTMENT; VITON SEAL; FLOW RATE 9.0 GPM; MAXIMUM SYSTEM PRESSURE 3000 PSI; 3.740 IN. L IN. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-01-191-8521 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.