Nearby stock numbers← 4820-00-078-0535 Body, Valve
·
4820-00-078-1021 Sleeve and Slide, Directional Con →
4820-00-078-0971 — Valves, Nonpowered
Features
Valve,check — FSC 4820
Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY SOURCE CONTROL DWG NO. 4A90150-101A FSCM 98897 A
Identification
NSN: 4820-00-078-0971
NIIN: 000780971
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
General Description
The Valve,check, cataloged under National Stock Number 4820-00-078-0971, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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
4820-00-078-0971
Item Name
Valve,check
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Reference Number Differentiating Characteristics
AS DIFFERENTIATED BY SOURCE CONTROL DWG NO. 4A90150-101A FSCM 98897 A
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 Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4930-00-620-4489POSSIBLE MATCH
PARTS KIT,HOSE REEL
Possible match (shared part number)
5998-01-009-3338113901POSSIBLE MATCH
CIRCUIT CARD ASSEMBLY
Possible match (shared part number)Astronautics Corporation of America
4810-01-201-82095N8862POSSIBLE MATCH
VALVE,AIR,PRESSURE
Possible match (shared part number)Caterpillar Inc Div Caterpillar Defense
5365-01-236-6401POSSIBLE MATCH
SPACER,RING
Possible match (shared part number)
6150-01-392-0592AA4624POSSIBLE MATCH
CABLE ASSEMBLY,SPECIAL PURPOSE,E
Possible match (shared part number)Semco Instruments Inc Div Atlas-Aero Corp., Division of Semco Instruments, Inc.
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
11390-1
5/9Secondary reference
Rtx Corporation Div Pratt & Whitney
4A90150-101A
1/3Source control — Government-approved source
U.S. Government activity
11390-1
3/3Design control — primary reference
U.S. Government activity
Related Parts
4930-00-620-4489POSSIBLE MATCH
PARTS KIT,HOSE REEL
5998-01-009-3338POSSIBLE MATCH
CIRCUIT CARD ASSEMBLY
113901
4810-01-201-8209POSSIBLE MATCH
VALVE,AIR,PRESSURE
5N8862
5365-01-236-6401POSSIBLE MATCH
SPACER,RING
6150-01-392-0592POSSIBLE MATCH
CABLE ASSEMBLY,SPECIAL PURPOSE,E
AA4624
Frequently Asked Questions
What is NSN 4820-00-078-0971?
NSN 4820-00-078-0971 is a Valve,check, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-00-078-0971?
5 possible matches (shared part number, not a government interchangeability claim): 4930-00-620-4489, 5998-01-009-3338, 4810-01-201-8209. Verify interchangeability with system specifications before substitution.
What are the specifications of 4820-00-078-0971?
Key specifications for 4820-00-078-0971: Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY SOURCE CONTROL DWG NO. 4A90150-101A FSCM 98897 A. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-00-078-0971 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.