Valve, Bleeder, Hydraulic System4820-01-321-2225

NSN 4820-01-321-2225 · NIIN 013212225

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-321-2225 · 4820013212225 · NIIN 013212225 · 01-321-2225 · FSC 4820 Valves, Nonpowered · A-WK-471-15 · A-WK-471-15 1/8 · A-WK-471-15 1/8

Nearby stock numbers ← 4820-01-321-2224 Valve, Vent · 4820-01-321-2235 →

4820-01-321-2225 — Valves, Nonpowered

Features

Valve,bleeder,hydraulic System — FSC 4820
Flow Control Device: DISK
Connection Style: PLAIN (PIPE) ALL ENDS
Connection Type: THREADED EXTERNAL PIPE ALL ENDS
Style Designator: ANGLE
Thread Direction: RIGHT-HAND ALL ENDS
Nominal Thread Size: 0.125 INCHES ALL ENDS IN
Material: COPPER ALLOY BODY

Identification

NSN: 4820-01-321-2225
NIIN: 013212225
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Valve,bleeder,hydraulic System, cataloged under National Stock Number 4820-01-321-2225, 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9 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-321-2225
Item Name	Valve,bleeder,hydraulic System
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Flow Control Device	DISK
Connection Style	PLAIN (PIPE) ALL ENDS
Connection Type	THREADED EXTERNAL PIPE ALL ENDS
Style Designator	ANGLE
Thread Direction	RIGHT-HAND ALL ENDS
Nominal Thread Size	0.125 INCHES ALL ENDS IN
Material	COPPER ALLOY BODY
Thread Series Designator	NPT ALL ENDS
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
A-WK-471-15	D/9 Drawing number reference only Walz and Krenzer Inc
A-WK-471-15 1/8	3/9 Design control — primary reference Walz and Krenzer Inc
A-WK-471-15 1/8	3/2 Design 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 4820-01-321-2225?

NSN 4820-01-321-2225 is a Valve,bleeder,hydraulic System, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-01-321-2225?

Key specifications for 4820-01-321-2225: Flow Control Device: DISK; Connection Style: PLAIN (PIPE) ALL ENDS; Connection Type: THREADED EXTERNAL PIPE ALL ENDS; Style Designator: ANGLE. 9 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-321-2225 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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