PartsTable TECHNICAL DATA SHEET

NSN 4820-01-254-6740Government record, cited

Valve, Check4820-01-254-6740

NSN 4820-01-254-6740 · NIIN 012546740 · Part number 1004448

Tld Ace Corp Div Tld Ace · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 00365

Government record, cited

NSN 4820-01-254-6740 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-254-6740. Manufacturer of record part number: 1004448.

Also searched as 4820-01-254-6740 · 4820012546740 · NIIN 012546740 · 01-254-6740 · FSC 4820 Valves, Nonpowered · CAGE 00365 · 1004448

Nearby stock numbers ← 4820-01-254-6739 Valve, Check · 4820-01-254-6744 Valve, Ball →

4820-01-254-6740 — Valves, Nonpowered

Features

Valve,check — FSC 4820
Supplementary Features: APPL TO ACFT,B-1B OSE41A01
1 manufacturer part number on file
Manufacturer of record: Tld Ace Corp Div Tld Ace

Identification

NSN: 4820-01-254-6740
NIIN: 012546740
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 1004448
Manufacturer: Tld Ace Corp Div Tld Ace

General Description

The Valve,check, cataloged under National Stock Number 4820-01-254-6740, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Tld Ace Corp Div Tld Ace. Government technical data includes 1 specification, 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. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-254-6740
Primary Part Number	1004448
Item Name	Valve,check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Tld Ace Corp Div Tld Ace
Status	ACTIVE
Supplementary Features	APPL TO ACFT,B-1B OSE41A01

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL Q — CCL Item — Commerce Control List
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
1004448 PRIMARY	Tld Ace Corp Div Tld Ace (USA)

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 4820-01-254-6740?

NSN 4820-01-254-6740 is a Valve,check, manufactured by Tld Ace Corp Div Tld Ace, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-254-6740?

NSN 4820-01-254-6740 has 1 manufacturer part number on file: 1004448 (Tld Ace Corp Div Tld Ace).

What are the specifications of 1004448?

Key specifications for 1004448: Supplementary Features: APPL TO ACFT,B-1B OSE41A01. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-254-6740 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.

What is the DEMIL code for NSN 4820-01-254-6740?

NSN 4820-01-254-6740 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.

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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