Valve, Bleeder, Hydraulic System4820-01-643-9659

NSN 4820-01-643-9659 · NIIN 016439659

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-643-9659 · 4820016439659 · NIIN 016439659 · 01-643-9659 · FSC 4820 Valves, Nonpowered

Nearby stock numbers ← 4820-01-643-9612 Valve, Ball · 4820-01-643-9667 Hinge, Swing Check Valve →

4820-01-643-9659 — Valves, Nonpowered

Features

Valve,bleeder,hydraulic System — FSC 4820
Operating Pressure: 600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Maximum Operating Temp: 100.0 FAHRENHEIT SINGLE RESPONSE DEGF
Material: STEEL CORROSION RESISTING BODY

Identification

NSN: 4820-01-643-9659
NIIN: 016439659
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Valve,bleeder,hydraulic System, cataloged under National Stock Number 4820-01-643-9659, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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	4820-01-643-9659
Item Name	Valve,bleeder,hydraulic System
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Operating Pressure	600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Maximum Operating Temp	100.0 FAHRENHEIT SINGLE RESPONSE DEGF
Material	STEEL CORROSION RESISTING BODY

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
MODEL 11-AV	3/9 Design control — primary reference Armstrong International Inc

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 4820-01-643-9659?

NSN 4820-01-643-9659 is a Valve,bleeder,hydraulic System, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-01-643-9659?

Key specifications for 4820-01-643-9659: Operating Pressure: 600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Maximum Operating Temp: 100.0 FAHRENHEIT SINGLE RESPONSE DEGF; Special Features: MAX ALLOW PRESSURE 500PSIG @ 100DEG F (34 BAR @ 38DEG C), PIPE CONNECTIONS 1/2,3/4, HEIGHT 7-1/4, WIGTH 2-3/4, DEGC; Part Name Assigned by Controlling Agency: FREE FLOATING LEVER AIR/GAS VENTS. 3 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-643-9659 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.

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