PartsTable TECHNICAL DATA SHEET

NSN 4820-01-572-6331Government record, cited

Valve, Check4820-01-572-6331

NSN 4820-01-572-6331 · NIIN 015726331 · Part number 869A-16TT-2

Lockheed Martin Corporation · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 0L1E5

Government record, cited

NSN 4820-01-572-6331 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-572-6331. Manufacturer of record part number: 869A-16TT-2.

Also searched as 4820-01-572-6331 · 4820015726331 · NIIN 015726331 · 01-572-6331 · FSC 4820 Valves, Nonpowered · CAGE 0L1E5 · 869A-16TT-2

Nearby stock numbers ← 4820-01-572-6330 Valve, Check · 4820-01-572-6332 Plug, Rotary, Valve →

4820-01-572-6331 — Valves, Nonpowered

Features

Valve,check — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Lockheed Martin Corporation

Identification

NSN: 4820-01-572-6331
NIIN: 015726331
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 869A-16TT-2
Manufacturer: Lockheed Martin Corporation

General Description

The Valve,check, cataloged under National Stock Number 4820-01-572-6331, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Lockheed Martin Corporation. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-572-6331
Primary Part Number	869A-16TT-2
Item Name	Valve,check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Lockheed Martin Corporation
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL B — Remove Demilitarization Key Points
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
869A-16TT-2 PRIMARY	Lockheed Martin Corporation (USA)

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 4820-01-572-6331?

NSN 4820-01-572-6331 is a Valve,check, manufactured by Lockheed Martin Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-572-6331?

NSN 4820-01-572-6331 has 1 manufacturer part number on file: 869A-16TT-2 (Lockheed Martin Corporation).

What are the specifications of 869A-16TT-2?

Key specifications for 869A-16TT-2: End Item Identification: U-2 AIRCRAFT. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-572-6331 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.

What is the DEMIL code for NSN 4820-01-572-6331?

NSN 4820-01-572-6331 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.

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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