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NSN 4820-01-549-5802Government record, cited

Disk, Valve4820-01-549-5802

NSN 4820-01-549-5802 · NIIN 015495802 · Part number 19-4-4SPV (2) ITEM 2

Airtech Inc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 1DNB7

Government record, cited

NSN 4820-01-549-5802 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-549-5802. Manufacturer of record part number: 19-4-4SPV (2) ITEM 2.

Also searched as 4820-01-549-5802 · 4820015495802 · NIIN 015495802 · 01-549-5802 · FSC 4820 Valves, Nonpowered · CAGE 1DNB7 · 19-4-4SPV (2) ITEM 2 · 19-4-4-SPV-2IN IT 2

Nearby stock numbers ← 4820-01-549-5786 Valve, Linear, Directional Control · 4820-01-549-5993 Seat, Valve →

4820-01-549-5802 — Valves, Nonpowered

Features

Disk,valve — FSC 4820
Media for Which Designed: REFRIGERANT
Material: STEEL COMP 316
1 manufacturer part number on file
Manufacturer of record: Airtech Inc

Identification

NSN: 4820-01-549-5802
NIIN: 015495802
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 19-4-4SPV (2) ITEM 2
Manufacturer: Airtech Inc

General Description

The Disk,valve, cataloged under National Stock Number 4820-01-549-5802, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Airtech Inc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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	4820-01-549-5802
Primary Part Number	19-4-4SPV (2) ITEM 2
Item Name	Disk,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Airtech Inc
Status	ACTIVE
Media for Which Designed	REFRIGERANT
Material	STEEL COMP 316

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
19-4-4SPV (2) ITEM 2 PRIMARY	Airtech Inc (USA)

Reference documents

Reference	Meaning
19-4-4-SPV-2IN IT 2	5/9 Secondary reference U S Valve Inc

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 4820-01-549-5802?

NSN 4820-01-549-5802 is a Disk,valve, manufactured by Airtech Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-549-5802?

NSN 4820-01-549-5802 has 1 manufacturer part number on file: 19-4-4SPV (2) ITEM 2 (Airtech Inc).

What are the specifications of 19-4-4SPV (2) ITEM 2?

Key specifications for 19-4-4SPV (2) ITEM 2: Special Features: USED ON 19-4-4-SPV (2) CHECK VALVE, 2 INCH IN; Media for Which Designed: REFRIGERANT; Part Name Assigned by Controlling Agency: DISC; End Item Identification: NEW CONSTRUCTION LHD8. 2 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-549-5802 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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