PartsTable TECHNICAL DATA SHEET

NSN 4820-01-171-4450Government record, cited

Parts Kit, Vent Valve4820-01-171-4450

NSN 4820-01-171-4450 · NIIN 011714450 · Part number 389-1449

Tescom Corp Dba Tescom Div Tescom · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 13669

Government record, cited

NSN 4820-01-171-4450 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-171-4450. Manufacturer of record part number: 389-1449.

Also searched as 4820-01-171-4450 · 4820011714450 · NIIN 011714450 · 01-171-4450 · FSC 4820 Valves, Nonpowered · CAGE 13669 · 389-1449 · RK201 · RK201

Nearby stock numbers ← 4820-01-171-4443 Valve, Calibrated Flow · 4820-01-171-4490 Retainer, Seat, Valve →

4820-01-171-4450 — Valves, Nonpowered

Features

Parts Kit,vent Valve — FSC 4820
Component Quantity: 16
Supply Items and Quantities: 13669 1022 SPRING 1; 13669 1023-2 VENT VALVE 1; 13669 1036 VALVE SEAT 1; 13669 1036-7 VALVE SEAT 1; 13669 1037-2 MAIN VALVE 1; 13669 1437 SPRING 1; 13669 5200-000147 O-RING 1; 13669 5200-001137 O-RING 1;13669 5200-001167 O-RING 1; 13669 5200-001209 O-RING 1; 13669 5475-014 BACKUP RING 1; 13669 5475-113 BACKUP RING; 13669 5475-116 BACKUP RING 1; 13669 5476-1120 BACKUP RING 1; 13669 6666 FILTER ASSY 1
1 manufacturer part number on file
Manufacturer of record: Tescom Corp Dba Tescom Div Tescom

Identification

NSN: 4820-01-171-4450
NIIN: 011714450
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 389-1449
Manufacturer: Tescom Corp Dba Tescom Div Tescom

General Description

The Parts Kit,vent Valve, cataloged under National Stock Number 4820-01-171-4450, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Tescom Corp Dba Tescom Div Tescom. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	4820-01-171-4450
Primary Part Number	389-1449
Item Name	Parts Kit,vent Valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Tescom Corp Dba Tescom Div Tescom
Status	ACTIVE
Component Quantity	16
Supply Items and Quantities	13669 1022 SPRING 1; 13669 1023-2 VENT VALVE 1; 13669 1036 VALVE SEAT 1; 13669 1036-7 VALVE SEAT 1; 13669 1037-2 MAIN VALVE 1; 13669 1437 SPRING 1; 13669 5200-000147 O-RING 1; 13669 5200-001137 O-RING 1;13669 5200-001167 O-RING 1; 13669 5200-001209 O-RING 1; 13669 5475-014 BACKUP RING 1; 13669 5475-113 BACKUP RING; 13669 5475-116 BACKUP RING 1; 13669 5476-1120 BACKUP RING 1; 13669 6666 FILTER ASSY 1

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
389-1449 PRIMARY	Tescom Corp Dba Tescom Div Tescom (USA)

Reference documents

Reference	Meaning
RK201	5/9 Secondary reference Divex Ltd
RK201	5/9 Secondary reference Jfd Ltd

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 4820-01-171-4450?

NSN 4820-01-171-4450 is a Parts Kit,vent Valve, manufactured by Tescom Corp Dba Tescom Div Tescom, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-171-4450?

NSN 4820-01-171-4450 has 1 manufacturer part number on file: 389-1449 (Tescom Corp Dba Tescom Div Tescom).

What are the specifications of 389-1449?

Key specifications for 389-1449: Component Quantity: 16; Supply Items and Quantities: 13669 1022 SPRING 1; 13669 1023-2 VENT VALVE 1; 13669 1036 VALVE SEAT 1; 13669 1036-7 VALVE SEAT 1; 13669 1037-2 MAIN VALVE 1; 13669 1437 SPRING 1; 13669 5200-000147 O-RING 1; 13669 5200-001137 O-RING 1;13669 5200-001167 O-RING 1; 13669 5200-001209 O-RING 1; 13669 5475-014 BACKUP RING 1; 13669 5475-113 BACKUP RING; 13669 5475-116 BACKUP RING 1; 13669 5476-1120 BACKUP RING 1; 13669 6666 FILTER ASSY 1. 2 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-171-4450 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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