PartsTable TECHNICAL DATA SHEET

NSN 4820-01-090-6413Government record, cited

Valve, Check4820-01-090-6413

NSN 4820-01-090-6413 · NIIN 010906413

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-090-6413 · 4820010906413 · NIIN 010906413 · 01-090-6413 · FSC 4820 Valves, Nonpowered · 5020590 ITEM 31 · A-9996 · 5020590 · 123A-4 · 123-4

Nearby stock numbers ← 4820-01-090-6411 Valve, Angle · 4820-01-090-6414 →

4820-01-090-6413 — Valves, Nonpowered

Features

Valve,check — FSC 4820
Flow Control Device: DISK
Furnished Items and Quantity: 2 TAILPIECE
Renewable Seat Ring Type: PRESSED-IN
Connection Style: PLAIN (PIPE) ALL ENDS
Mounting Position: HORIZONTAL
Connection Type: THREADED EXTERNAL PIPE ALL ENDS
Style Designator: STRAIGHT THRU

Identification

NSN: 4820-01-090-6413
NIIN: 010906413
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Valve,check, cataloged under National Stock Number 4820-01-090-6413, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government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	4820-01-090-6413
Item Name	Valve,check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Flow Control Device	DISK
Furnished Items and Quantity	2 TAILPIECE
Renewable Seat Ring Type	PRESSED-IN
Connection Style	PLAIN (PIPE) ALL ENDS
Mounting Position	HORIZONTAL
Connection Type	THREADED EXTERNAL PIPE ALL ENDS
Style Designator	STRAIGHT THRU
Operating Pressure	6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Thread Direction	RIGHT-HAND ALL ENDS
Nominal Thread Size	0.750 INCHES ALL ENDS IN
Maximum Operating Temp	225.0 FAHRENHEIT SINGLE RESPONSE DEGF
Disk Loading Method	SPRING
Media for Which Designed	WATER-OIL-GAS SINGLE RESPONSE
Material	STEEL CORROSION RESISTING SEAT
Thread Series Designator	NPT 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 8

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

4820-01-091-1866581-4-P POSSIBLE MATCH

VALVE,ANGLE

Possible match (shared part number)Admiral Valve Llc Dba Cpv Manufacturing

4730-01-091-314348R-3-304SS POSSIBLE MATCH

TAILPIECE,UNION

Possible match (shared part number)Admiral Valve Llc Dba Cpv Manufacturing

4820-01-091-7995SS-1KM4-S4-A POSSIBLE MATCH

VALVE,ANGLE

Possible match (shared part number)Swagelok Co

4820-01-148-1453123A-4 PL4352B 3/4IN POSSIBLE MATCH

VALVE,CHECK

Possible match (shared part number)Admiral Valve Llc Dba Cpv Manufacturing

4820-01-199-18736GP81-2-P AND PL-1403 POSSIBLE MATCH

VALVE,ANGLE

Possible match (shared part number)Hydrasearch Company, Llc

4820-01-200-85476GP81-3-P AND PL-1191 POSSIBLE MATCH

VALVE,ANGLE

Possible match (shared part number)Hydrasearch Company, Llc

4820-01-229-2917123A-8 PL-4356 POSSIBLE MATCH

VALVE,CHECK

Possible match (shared part number)Admiral Valve Llc Dba Cpv Manufacturing

4820-01-248-2434A-9996 PL-4353B 123A-5 POSSIBLE MATCH

VALVE,CHECK

Possible match (shared part number)Admiral Valve Llc Dba Cpv Manufacturing

Cross-Reference Index

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

Reference documents

Reference	Meaning
5020590 ITEM 31	5/9 Secondary reference Naval Sea Systems Command
A-9996	D/9 Drawing number reference only U.S. Government activity
5020590	D/9 Drawing number reference only Naval Sea Systems Command
123A-4	3/2 Design control — primary reference U.S. Government activity
123-4	5/9 Secondary reference U.S. Government activity

Related Parts

4820-01-091-1866POSSIBLE MATCH

VALVE,ANGLE

581-4-P

4730-01-091-3143POSSIBLE MATCH

TAILPIECE,UNION

48R-3-304SS

4820-01-091-7995POSSIBLE MATCH

VALVE,ANGLE

SS-1KM4-S4-A

4820-01-148-1453POSSIBLE MATCH

VALVE,CHECK

123A-4 PL4352B 3/4IN

4820-01-199-1873POSSIBLE MATCH

VALVE,ANGLE

6GP81-2-P AND PL-1403

4820-01-200-8547POSSIBLE MATCH

VALVE,ANGLE

6GP81-3-P AND PL-1191

4820-01-229-2917POSSIBLE MATCH

VALVE,CHECK

123A-8 PL-4356

4820-01-248-2434POSSIBLE MATCH

VALVE,CHECK

A-9996 PL-4353B 123A-5

Frequently Asked Questions

What is NSN 4820-01-090-6413?

NSN 4820-01-090-6413 is a Valve,check, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-01-090-6413?

8 possible matches (shared part number, not a government interchangeability claim): 4820-01-091-1866, 4730-01-091-3143, 4820-01-091-7995. Verify interchangeability with system specifications before substitution.

What are the specifications of 4820-01-090-6413?

Key specifications for 4820-01-090-6413: Flow Control Device: DISK; Furnished Items and Quantity: 2 TAILPIECE; Renewable Seat Ring Type: PRESSED-IN; Connection Style: PLAIN (PIPE) ALL ENDS. 16 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-090-6413 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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