Valve, Calibrated Flow4820-01-539-0590

NSN 4820-01-539-0590 · NIIN 015390590

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-539-0590 · 4820015390590 · NIIN 015390590 · 01-539-0590 · FSC 4820 Valves, Nonpowered · 64785-01H · 201079 P/N 64785-01H

Nearby stock numbers ← 4820-01-539-0575 Valve, Hand Control · 4820-01-539-0592 Retainer, Disk, Valve →

4820-01-539-0590 — Valves, Nonpowered

Features

Valve,calibrated Flow — FSC 4820
Flow Control Device: DIAPHRAGM
Valve Size: 0.375 INCHES IN
Material: NICKEL ALLOY AND COPPER ALLOY SEAT
Material: NICKEL ALLOY AND COPPER ALLOY STEM
Media for Which Designed: WATER, SALT

Identification

NSN: 4820-01-539-0590
NIIN: 015390590
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Valve,calibrated Flow, cataloged under National Stock Number 4820-01-539-0590, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	4820-01-539-0590
Item Name	Valve,calibrated Flow
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Flow Control Device	DIAPHRAGM
Valve Size	0.375 INCHES IN
Material	NICKEL ALLOY AND COPPER ALLOY SEAT
Material	NICKEL ALLOY AND COPPER ALLOY STEM
Media for Which Designed	WATER, SALT

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
64785-01H	3/2 Design control — primary reference U.S. Government activity
201079 P/N 64785-01H	5/2 Secondary 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 4820-01-539-0590?

NSN 4820-01-539-0590 is a Valve,calibrated Flow, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-01-539-0590?

Key specifications for 4820-01-539-0590: Flow Control Device: DIAPHRAGM; Valve Size: 0.375 INCHES IN; End Item Identification: FFG46; Material: NICKEL ALLOY AND COPPER ALLOY SEAT. 5 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-539-0590 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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