PartsTable TECHNICAL DATA SHEET

NSN 4820-01-048-8790Government record, cited

Valve, Check4820-01-048-8790

NSN 4820-01-048-8790 · NIIN 010488790 · Part number 21SN04-140-2

Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 02750

Government record, cited

NSN 4820-01-048-8790 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-048-8790. Manufacturer of record part number: 21SN04-140-2.

Also searched as 4820-01-048-8790 · 4820010488790 · NIIN 010488790 · 01-048-8790 · FSC 4820 Valves, Nonpowered · CAGE 02750 · 21SN04-140-2 · 16VP030-201

Nearby stock numbers ← 4820-01-048-8789 Valve, Angle · 4820-01-048-8868 Valve Operator Assembly →

4820-01-048-8790 — Valves, Nonpowered

Features

Valve,check — FSC 4820
Style Designator: STRAIGHT THRU FLANGED ENDS
Face to Face Distance: 3.360 INCHES IN
Material: ALUMINUM ALLOY 2024 BODY
1 manufacturer part number on file
Manufacturer of record: Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution

Identification

NSN: 4820-01-048-8790
NIIN: 010488790
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 21SN04-140-2
Manufacturer: Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution

General Description

The Valve,check, cataloged under National Stock Number 4820-01-048-8790, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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	4820-01-048-8790
Primary Part Number	21SN04-140-2
Item Name	Valve,check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution
Status	ACTIVE
Style Designator	STRAIGHT THRU FLANGED ENDS
Face to Face Distance	3.360 INCHES IN
Material	ALUMINUM ALLOY 2024 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

Part Number	Manufacturer
21SN04-140-2 PRIMARY	Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution (USA)

Reference documents

Reference	Meaning
16VP030-201	7/2 Vendor item drawing reference Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution

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 4820-01-048-8790?

NSN 4820-01-048-8790 is a Valve,check, manufactured by Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-048-8790?

NSN 4820-01-048-8790 has 1 manufacturer part number on file: 21SN04-140-2 (Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution).

What are the specifications of 21SN04-140-2?

Key specifications for 21SN04-140-2: Style Designator: STRAIGHT THRU FLANGED ENDS; Face to Face Distance: 3.360 INCHES IN; Material: ALUMINUM ALLOY 2024 BODY. 3 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-048-8790 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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