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NSN 4820-01-157-3171Government record, cited

Valve, Vent4820-01-157-3171

NSN 4820-01-157-3171 · NIIN 011573171

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-157-3171 · 4820011573171 · NIIN 011573171 · 01-157-3171 · FSC 4820 Valves, Nonpowered

Nearby stock numbers ← 4820-01-157-3170 Valve, Safety Relief · 4820-01-157-3186 Flow Control Assembly →

4820-01-157-3171 — Valves, Nonpowered

Features

Valve,vent — FSC 4820
Surface Treatment Document and Classification: MIL-A-8625, TYPE 3 MIL SPEC SINGLE TREATMENT RESPONSE
Surface Treatment: ANODIZE
Media for Which Designed: FUEL/OIL, HYDROCARBON SINGLE RESPONSE
Material: ALUMINUM ALLOY 2011 BODY

Identification

NSN: 4820-01-157-3171
NIIN: 011573171
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Valve,vent, cataloged under National Stock Number 4820-01-157-3171, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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	4820-01-157-3171
Item Name	Valve,vent
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Surface Treatment Document and Classification	MIL-A-8625, TYPE 3 MIL SPEC SINGLE TREATMENT RESPONSE
Surface Treatment	ANODIZE
Media for Which Designed	FUEL/OIL, HYDROCARBON SINGLE RESPONSE
Material	ALUMINUM ALLOY 2011 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

⇄ Related Items 7

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

7690-01-303-7571A-161 POSSIBLE MATCH

LABEL

Possible match (shared part number)Shamrock Scientific Specialty Systems, Llc

6105-01-333-1595161-A-161 POSSIBLE MATCH

MOTOR,ALTERNATING CURRENT

Possible match (shared part number)Ship Street Capital, Llc Dba Edson Corporation

5910-01-391-25307601990-2 POSSIBLE MATCH

CAPACITOR,FIXED,ELECTROLYTIC

Possible match (shared part number)Ge Aviation Systems Llc Dba Ge Aviation

5330-01-467-2949976015 POSSIBLE MATCH

GASKET

Possible match (shared part number)Insinger Machine Co

8455-01-528-7652 POSSIBLE MATCH

INSIGNIA,SHOULDER SLEEVE

Possible match (shared part number)

8455-01-664-0640 POSSIBLE MATCH

INSIGNIA,SHOULDER SLEEVE

Possible match (shared part number)

8455-01-699-7922 POSSIBLE MATCH

INSIGNIA,SHOULDER SLEEVE

Possible match (shared part number)

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
A161	3/2 Design control — primary reference U.S. Government activity

Related Parts

7690-01-303-7571POSSIBLE MATCH

LABEL

A-161

6105-01-333-1595POSSIBLE MATCH

MOTOR,ALTERNATING CURRENT

161-A-161

5910-01-391-2530POSSIBLE MATCH

CAPACITOR,FIXED,ELECTROLYTIC

7601990-2

5330-01-467-2949POSSIBLE MATCH

GASKET

976015

8455-01-528-7652POSSIBLE MATCH

INSIGNIA,SHOULDER SLEEVE

8455-01-664-0640POSSIBLE MATCH

INSIGNIA,SHOULDER SLEEVE

8455-01-699-7922POSSIBLE MATCH

INSIGNIA,SHOULDER SLEEVE

Frequently Asked Questions

What is NSN 4820-01-157-3171?

NSN 4820-01-157-3171 is a Valve,vent, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-01-157-3171?

7 possible matches (shared part number, not a government interchangeability claim): 7690-01-303-7571, 6105-01-333-1595, 5910-01-391-2530. Verify interchangeability with system specifications before substitution.

What are the specifications of 4820-01-157-3171?

Key specifications for 4820-01-157-3171: Surface Treatment Document and Classification: MIL-A-8625, TYPE 3 MIL SPEC SINGLE TREATMENT RESPONSE; Surface Treatment: ANODIZE; Media for Which Designed: FUEL/OIL, HYDROCARBON SINGLE RESPONSE; Material: ALUMINUM ALLOY 2011 BODY. 4 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-157-3171 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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