Nominal Outside Diameter Tube Accommodated: 0.25 INCHES FIRST END IN
Operating Pressure: 20000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Media for Which Designed: OIL SECOND RESPONSE
Media for Which Designed: GAS, NATURAL SINGLE RESPONSE
Identification
NSN: 4820-01-677-8252
NIIN: 016778252
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
General Description
The Valve,bleeder,hydraulic System, cataloged under National Stock Number 4820-01-677-8252, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-677-8252
Item Name
Valve,bleeder,hydraulic System
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Flow Control Device
STEM
Connection Type
THREADED CARTRIDGE FIRST END
Style Designator
SCREW-IN CARTRIDGE
Nominal Outside Diameter Tube Accommodated
0.25 INCHES FIRST END IN
Operating Pressure
20000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Media for Which Designed
OIL SECOND RESPONSE
Media for Which Designed
GAS, NATURAL SINGLE RESPONSE
Material
STEEL COMP 316 BODY
Valve Operation Method
MANUAL
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
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
30BV4002-SOG
3/2Design control — primary reference
U.S. Government activity
No interchangeability data on file.
Other items in FSC 4820 — Valves, Nonpowered
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 4820-01-677-8252?
NSN 4820-01-677-8252 is a Valve,bleeder,hydraulic System, classified under FSC 4820, Valves, Nonpowered. Status: active.
What are the specifications of 4820-01-677-8252?
Key specifications for 4820-01-677-8252: Flow Control Device: STEM; Connection Type: THREADED CARTRIDGE FIRST END; Style Designator: SCREW-IN CARTRIDGE; Nominal Outside Diameter Tube Accommodated: 0.25 INCHES FIRST END IN. 9 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-677-8252 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.