Valve, Restrictor Check4820-01-270-4279

NSN 4820-01-270-4279 · NIIN 012704279

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-270-4279 · 4820012704279 · NIIN 012704279 · 01-270-4279 · FSC 4820 Valves, Nonpowered · 5906207 · FCLX0502550A

Nearby stock numbers ← 4820-01-270-4277 Valve, Plug · 4820-01-270-4280 →

4820-01-270-4279 — Valves, Nonpowered

Features

Valve,restrictor Check — FSC 4820
Flow Control Device: DISK
Connection Style: FLARED (TUBE) ALL ENDS
Mounting Position: HORIZONTAL OR VERTICAL
Connection Type: THREADED EXTERNAL TUBE ALL ENDS
Style Designator: CROSS
Thread Direction: RIGHT-HAND ALL ENDS
Nominal Thread Size: 0.438 INCHES ALL ENDS IN

Identification

NSN: 4820-01-270-4279
NIIN: 012704279
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Valve,restrictor Check, cataloged under National Stock Number 4820-01-270-4279, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-270-4279
Item Name	Valve,restrictor Check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Flow Control Device	DISK
Connection Style	FLARED (TUBE) ALL ENDS
Mounting Position	HORIZONTAL OR VERTICAL
Connection Type	THREADED EXTERNAL TUBE ALL ENDS
Style Designator	CROSS
Thread Direction	RIGHT-HAND ALL ENDS
Nominal Thread Size	0.438 INCHES ALL ENDS IN
Seat Angle	37.0 DEGREES ALL ENDS
Disk Loading Method	SPRING
Thread Class	2A ALL ENDS A
Material	STEEL CORROSION RESISTING SEAT
Material	STEEL CORROSION RESISTING BODY
Thread Series Designator	UNF 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

Cross-Reference Index

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

Reference documents

Reference	Meaning
5906207	7/2 Vendor item drawing reference Naval Sea Systems Command
FCLX0502550A	3/2 Design control — primary reference U.S. Government activity

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 4820-01-270-4279?

NSN 4820-01-270-4279 is a Valve,restrictor Check, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-01-270-4279?

Key specifications for 4820-01-270-4279: Flow Control Device: DISK; Connection Style: FLARED (TUBE) ALL ENDS; Mounting Position: HORIZONTAL OR VERTICAL; Connection Type: THREADED EXTERNAL TUBE ALL ENDS. 14 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-270-4279 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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