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NSN 4820-00-554-8612Government record, cited

Valve, Check4820-00-554-8612

NSN 4820-00-554-8612 · NIIN 005548612

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-00-554-8612 · 4820005548612 · NIIN 005548612 · 00-554-8612 · FSC 4820 Valves, Nonpowered

Nearby stock numbers ← 4820-00-554-8589 · 4820-00-554-8679 →

4820-00-554-8612 — Valves, Nonpowered

Features

Valve,check — FSC 4820
Flow Control Device: DISK
Connection Style: PLAIN (TUBE) FIRST END
Connection Style: FLARE (TUBE) SECOND END
Mounting Position: HORIZONTAL OR VERTICAL
Connection Type: THREADED EXTERNAL TUBE FIRST END
Connection Type: THREADED INTERNAL TUBE SECOND END
Style Designator: STRAIGHT THRU

Identification

NSN: 4820-00-554-8612
NIIN: 005548612
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Valve,check, cataloged under National Stock Number 4820-00-554-8612, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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	4820-00-554-8612
Item Name	Valve,check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Flow Control Device	DISK
Connection Style	PLAIN (TUBE) FIRST END
Connection Style	FLARE (TUBE) SECOND END
Mounting Position	HORIZONTAL OR VERTICAL
Connection Type	THREADED EXTERNAL TUBE FIRST END
Connection Type	THREADED INTERNAL TUBE SECOND END
Style Designator	STRAIGHT THRU
Nominal Outside Diameter Tube Accommodated	1.250 INCHES SECOND END IN
Thread Direction	RIGHT-HAND ALL ENDS
Nominal Thread Size	1.625 INCHES ALL ENDS IN
Disk Loading Method	SPRING
Surface Treatment	ANODIZE
Thread Class	3A FIRST END A
Thread Class	3B SECOND END
Thread Quantity Per Inch	12 ALL ENDS
Material	ALUMINUM ALLOY OVERALL
Thread Series Designator	UN ALL ENDS
Valve Operation Method	AUTOMATIC

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 6

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

4820-00-768-3957056000 POSSIBLE MATCH

DISK,VALVE

Possible match (shared part number)Emerson Automation Solutions Final Control Us Lp Div Navy Product Team

4140-01-147-655856000 POSSIBLE MATCH

IMPELLER,FAN,CENTRIFUGAL

Possible match (shared part number)Alliance Laundry Systems Llc

5330-01-321-8010560-00 POSSIBLE MATCH

GASKET

Possible match (shared part number)Taylor Made Environmental

6625-01-525-112956000 POSSIBLE MATCH

SYNTHESIZER,ELECTRICAL FREQUENCY

Possible match (shared part number)Microsemi Frequency and Time Corp

4130-01-537-318456000 POSSIBLE MATCH

FILTER ELEMENT,AIR CONDITIONING

Possible match (shared part number)Naval Air Warfare Ctr Aircraft Div

6515-01-606-048256000 POSSIBLE MATCH

HANDPIECE AND TUBE

Possible match (shared part number)Hydrocision Inc Dba Hydrocision Inc

Cross-Reference Index

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

Reference documents

Reference	Meaning
56000	3/2 Design control — primary reference U.S. Government activity

Related Parts

4820-00-768-3957POSSIBLE MATCH

DISK,VALVE

056000

4140-01-147-6558POSSIBLE MATCH

IMPELLER,FAN,CENTRIFUGAL

56000

5330-01-321-8010POSSIBLE MATCH

GASKET

560-00

6625-01-525-1129POSSIBLE MATCH

SYNTHESIZER,ELECTRICAL FREQUENCY

56000

4130-01-537-3184POSSIBLE MATCH

FILTER ELEMENT,AIR CONDITIONING

56000

6515-01-606-0482POSSIBLE MATCH

HANDPIECE AND TUBE

56000

Frequently Asked Questions

What is NSN 4820-00-554-8612?

NSN 4820-00-554-8612 is a Valve,check, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-00-554-8612?

6 possible matches (shared part number, not a government interchangeability claim): 4820-00-768-3957, 4140-01-147-6558, 5330-01-321-8010. Verify interchangeability with system specifications before substitution.

What are the specifications of 4820-00-554-8612?

Key specifications for 4820-00-554-8612: Flow Control Device: DISK; Connection Style: PLAIN (TUBE) FIRST END; Connection Style: FLARE (TUBE) SECOND END; Mounting Position: HORIZONTAL OR VERTICAL. 18 specifications are documented in the U.S. Government catalog.

Is NSN 4820-00-554-8612 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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