PartsTable TECHNICAL DATA SHEET

NSN 4820-01-435-4704Government record, cited

Disk, Valve4820-01-435-4704

NSN 4820-01-435-4704 · NIIN 014354704 · Part number 23399 ITEM 7A P/N 2577-062-146-S

Velan Valve Corp. · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 57574

Government record, cited

NSN 4820-01-435-4704 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-435-4704. Manufacturer of record part number: 23399 ITEM 7A P/N 2577-062-146-S.

Also searched as 4820-01-435-4704 · 4820014354704 · NIIN 014354704 · 01-435-4704 · FSC 4820 Valves, Nonpowered · CAGE 57574 · 23399 ITEM 7A P/N 2577-062-146-S · 23399 · 23399 PART 2577-062-146-S

Nearby stock numbers ← 4820-01-435-4703 Valve, Regulating, Fluid Pressure · 4820-01-435-4740 Valve, Gate →

4820-01-435-4704 — Valves, Nonpowered

Features

Disk,valve — FSC 4820
Pressure Rating: 1440.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
Taper Minor Diameter: 0.574 INCHES NOMINAL IN
Style Designator: SOLID WEDGE
Taper Major Diameter: 0.761 INCHES NOMINAL IN
Taper Length: 1.875 INCHES NOMINAL IN
Material: STEEL
2 manufacturer part numbers on file

Identification

NSN: 4820-01-435-4704
NIIN: 014354704
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 23399 ITEM 7A P/N 2577-062-146-S
Manufacturer: Velan Valve Corp.

General Description

The Disk,valve, cataloged under National Stock Number 4820-01-435-4704, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Velan Valve Corp.. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-435-4704
Primary Part Number	23399 ITEM 7A P/N 2577-062-146-S
Item Name	Disk,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Velan Valve Corp.
Status	ACTIVE
Pressure Rating	1440.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
Taper Minor Diameter	0.574 INCHES NOMINAL IN
Style Designator	SOLID WEDGE
Taper Major Diameter	0.761 INCHES NOMINAL IN
Taper Length	1.875 INCHES NOMINAL IN
Material	STEEL

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

Part Number	Manufacturer
23399 ITEM 7A P/N 2577-062-146-S PRIMARY	Velan Valve Corp. (USA)
23399 PART 2577-062-146-S	Velan Valve Corp. (USA)

Reference documents

Reference	Meaning
23399	D/9 Drawing number reference only Velan Valve Corp.

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 4820-01-435-4704?

NSN 4820-01-435-4704 is a Disk,valve, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-435-4704?

NSN 4820-01-435-4704 has 2 manufacturer part numbers on file: 23399 ITEM 7A P/N 2577-062-146-S (Velan Valve Corp.), 23399 PART 2577-062-146-S (Velan Valve Corp.).

What are the specifications of 23399 ITEM 7A P/N 2577-062-146-S?

Key specifications for 23399 ITEM 7A P/N 2577-062-146-S: Overall Height: 2.438 INCHES NOMINAL IN; Pressure Rating: 1440.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS; Taper Minor Diameter: 0.574 INCHES NOMINAL IN; Style Designator: SOLID WEDGE. 6 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-435-4704 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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