NSN 4820-01-028-4482 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-028-4482. Manufacturer of record part number: 483-1/8B2-2.
Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS
Mounting Position: HORIZONTAL OR VERTICAL
Connection Type: THREADED INTERNAL PIPE ALL ENDS
Style Designator: STRAIGHT THRU
Material Document and Classification: MIL-G-1149, TYPE 2, CLASS 5 MIL SPEC SINGLE MATERIAL RESPONSE PACKING
Material Document and Classification: QQ-B-626, ALLOY 360 FED SPEC SINGLE MATERIAL RESPONSE BODY
Identification
NSN: 4820-01-028-4482
NIIN: 010284482
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 483-1/8B2-2
Manufacturer: Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
General Description
The Valve,check, cataloged under National Stock Number 4820-01-028-4482, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division. Government technical data includes 21 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-028-4482
Primary Part Number
483-1/8B2-2
Item Name
Valve,check
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
Status
ACTIVE
Flow Control Device
POPPET
Connection Style
PLAIN, OPTIONAL END (PIPE) ALL ENDS
Mounting Position
HORIZONTAL OR VERTICAL
Connection Type
THREADED INTERNAL PIPE ALL ENDS
Style Designator
STRAIGHT THRU
Material Document and Classification
MIL-G-1149, TYPE 2, CLASS 5 MIL SPEC SINGLE MATERIAL RESPONSE PACKING
Material Document and Classification
QQ-B-626, ALLOY 360 FED SPEC SINGLE MATERIAL RESPONSE BODY
Material Document and Classification
TYPE304,32 FED SPEC 1ST MATERIAL RESPONSE AND 303 FED SPEC 2ND MATERIAL RESPONSE FLOW CONTROL DEVICE
Operating Pressure
3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Thread Direction
RIGHT-HAND ALL ENDS
Nominal Thread Size
0.125 INCHES FIRST END IN
Maximum Operating Temp
450.0 FAHRENHEIT SECOND RESPONSE DEGF
Maximum Operating Temp
-65.0 FAHRENHEIT FIRST RESPONSE DEGF
Disk Loading Method
SPRING
Media for Which Designed
OIL, HYDRAULIC SECOND RESPONSE
Media for Which Designed
AIR FIRST RESPONSE
Material
STEEL FLOW CONTROL DEVICE
Material
COPPER ALLOY 360 BODY
Material
RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING
Thread Series Designator
NPT ALL ENDS
Valve Operation Method
AUTOMATIC
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 Items9
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-052-3974488-4D2-3POSSIBLE MATCH
VALVE,CHECK
Possible match (shared part number)Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
5360-01-095-3176415-1000-0403POSSIBLE MATCH
SPRING,HELICAL,COMPRESSION
Possible match (shared part number)Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
4820-01-196-15391-375-8-1POSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
4820-01-224-2931488-8D27-100POSSIBLE MATCH
VALVE,CHECK
Possible match (shared part number)Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
4820-01-249-3750493-16SS2-2POSSIBLE MATCH
VALVE,CHECK
Possible match (shared part number)Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
4820-01-250-6448493-24SS28-40POSSIBLE MATCH
VALVE,CHECK
Possible match (shared part number)Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
4820-01-297-5033POSSIBLE MATCH
VALVE,CHECK
Possible match (shared part number)
4820-01-438-7570493-24SS1-40POSSIBLE MATCH
VALVE,CHECK
Possible match (shared part number)Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
4820-01-479-4978493-10B22-2POSSIBLE MATCH
VALVE,CHECK
Possible match (shared part number)Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division (USA)
Reference documents
Reference
Meaning
9-1862-4
D/9Drawing number reference only
U.S. Government activity
483-1/8B2-2
5/9Secondary reference
U.S. Government activity
9-1862-4-4BRASS
5/9Secondary reference
U.S. Government activity
Related Parts
4820-01-052-3974POSSIBLE MATCH
VALVE,CHECK
488-4D2-3
5360-01-095-3176POSSIBLE MATCH
SPRING,HELICAL,COMPRESSION
415-1000-0403
4820-01-196-1539POSSIBLE MATCH
DISK,VALVE
1-375-8-1
4820-01-224-2931POSSIBLE MATCH
VALVE,CHECK
488-8D27-100
4820-01-249-3750POSSIBLE MATCH
VALVE,CHECK
493-16SS2-2
4820-01-250-6448POSSIBLE MATCH
VALVE,CHECK
493-24SS28-40
4820-01-297-5033POSSIBLE MATCH
VALVE,CHECK
4820-01-438-7570POSSIBLE MATCH
VALVE,CHECK
493-24SS1-40
4820-01-479-4978POSSIBLE MATCH
VALVE,CHECK
493-10B22-2
Frequently Asked Questions
What is NSN 4820-01-028-4482?
NSN 4820-01-028-4482 is a Valve,check, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-028-4482?
NSN 4820-01-028-4482 has 1 manufacturer part number on file: 483-1/8B2-2 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division).
What NSN replaces 4820-01-028-4482?
9 possible matches (shared part number, not a government interchangeability claim): 4820-01-052-3974, 5360-01-095-3176, 4820-01-196-1539. Verify interchangeability with system specifications before substitution.
What are the specifications of 483-1/8B2-2?
Key specifications for 483-1/8B2-2: Flow Control Device: POPPET; Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Mounting Position: HORIZONTAL OR VERTICAL; Connection Type: THREADED INTERNAL PIPE ALL ENDS. 21 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-028-4482 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.