PartsTable TECHNICAL DATA SHEET

NSN 2590-01-651-9481Government record, cited

Seat, Hull Drain Poppet Valve2590-01-651-9481

NSN 2590-01-651-9481 · NIIN 016519481 · Part number 76N-4T004

Flowline Valve and Controls, L.l.c. · FSC 2590 — Miscellaneous Vehicular Components · FSG 25 — Vehicular Equipment Components · CAGE 6SPR5

Government record, cited

NSN 2590-01-651-9481 — this item is cataloged by the U.S. Government under National Stock Number 2590-01-651-9481. Manufacturer of record part number: 76N-4T004.

Also searched as 2590-01-651-9481 · 2590016519481 · NIIN 016519481 · 01-651-9481 · FSC 2590 Miscellaneous Vehicular Components · CAGE 6SPR5 · 76N-4T004 · LINE 1: FL77N-0150-1AB-R1

Nearby stock numbers ← 2590-01-651-9414 Seat, Hull Drain Poppet Valve · 2590-01-651-9643 Seat, Hull Drain Poppet Valve →

Features

Seat,hull Drain Poppet Valve — FSC 2590
Material: COPPER OR NICKEL ALLOY AND CARBON OVERALL
1 manufacturer part number on file
Manufacturer of record: Flowline Valve and Controls, L.l.c.

Identification

NSN: 2590-01-651-9481
NIIN: 016519481
FSC: 2590 — Miscellaneous Vehicular Components
FSG: 25 — Vehicular Equipment Components
Primary part number: 76N-4T004
Manufacturer: Flowline Valve and Controls, L.l.c.

General Description

The Seat,hull Drain Poppet Valve, cataloged under National Stock Number 2590-01-651-9481, is classified within Federal Supply Class 2590 (Miscellaneous Vehicular Components) of the Vehicular Equipment Components group. The manufacturer of record is Flowline Valve and Controls, L.l.c.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	2590-01-651-9481
Primary Part Number	76N-4T004
Item Name	Seat,hull Drain Poppet Valve
FSC / FSG	2590 / 25 — Miscellaneous Vehicular Components
Manufacturer	Flowline Valve and Controls, L.l.c.
Status	ACTIVE
Material	COPPER OR NICKEL ALLOY AND CARBON OVERALL

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

⇄ Related Items 8

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

2590-01-651-967476N-4T003 POSSIBLE MATCH

SEAT,HULL DRAIN POPPET VALVE

Possible match (shared part number)Flowline Valve and Controls, L.l.c.

2590-01-651-973776N-4T025 POSSIBLE MATCH

SEAT,HULL DRAIN POPPET VALVE

Possible match (shared part number)Flowline Valve and Controls, L.l.c.

5340-01-652-310076N-7M003 POSSIBLE MATCH

PLATE,RETAINING,SEAL

Possible match (shared part number)Flowline Valve and Controls, L.l.c.

4820-01-652-441576N-5M005 POSSIBLE MATCH

DISK,VALVE

Possible match (shared part number)Flowline Valve and Controls, L.l.c.

4820-01-652-441876N-5M006 POSSIBLE MATCH

DISK,VALVE

Possible match (shared part number)Flowline Valve and Controls, L.l.c.

4820-01-652-633376N-2M004 POSSIBLE MATCH

STEM,FLUID VALVE

Possible match (shared part number)Flowline Valve and Controls, L.l.c.

4820-01-652-641176N-2M005 POSSIBLE MATCH

STEM,FLUID VALVE

Possible match (shared part number)Flowline Valve and Controls, L.l.c.

4820-01-652-641476N-2M006 POSSIBLE MATCH

STEM,FLUID VALVE

Possible match (shared part number)Flowline Valve and Controls, L.l.c.

Cross-Reference Index

Part Number	Manufacturer
76N-4T004 PRIMARY	Flowline Valve and Controls, L.l.c. (USA)

Reference documents

Reference	Meaning
LINE 1: FL77N-0150-1AB-R1	D/9 Drawing number reference only Flowline Valve and Controls, L.l.c.

Related Parts

2590-01-651-9674POSSIBLE MATCH

SEAT,HULL DRAIN POPPET VALVE

76N-4T003

2590-01-651-9737POSSIBLE MATCH

SEAT,HULL DRAIN POPPET VALVE

76N-4T025

5340-01-652-3100POSSIBLE MATCH

PLATE,RETAINING,SEAL

76N-7M003

4820-01-652-4415POSSIBLE MATCH

DISK,VALVE

76N-5M005

4820-01-652-4418POSSIBLE MATCH

DISK,VALVE

76N-5M006

4820-01-652-6333POSSIBLE MATCH

STEM,FLUID VALVE

76N-2M004

4820-01-652-6411POSSIBLE MATCH

STEM,FLUID VALVE

76N-2M005

4820-01-652-6414POSSIBLE MATCH

STEM,FLUID VALVE

76N-2M006

Frequently Asked Questions

What is NSN 2590-01-651-9481?

NSN 2590-01-651-9481 is a Seat,hull Drain Poppet Valve, manufactured by Flowline Valve and Controls, L.l.c., classified under FSC 2590, Miscellaneous Vehicular Components. Status: active.

What part numbers are listed for NSN 2590-01-651-9481?

NSN 2590-01-651-9481 has 1 manufacturer part number on file: 76N-4T004 (Flowline Valve and Controls, L.l.c.).

What NSN replaces 2590-01-651-9481?

8 possible matches (shared part number, not a government interchangeability claim): 2590-01-651-9674, 2590-01-651-9737, 5340-01-652-3100. Verify interchangeability with system specifications before substitution.

What are the specifications of 76N-4T004?

Key specifications for 76N-4T004: Special Features: SEAT IS MONEL WITH A CARBON FILLED CENTER;FOR 4" VAVLE; Part Name Assigned by Controlling Agency: SEAT; End Item Identification: VALVE,BTFL 4; Material: COPPER OR NICKEL ALLOY AND CARBON OVERALL. 1 specification is documented in the U.S. Government catalog.

Is NSN 2590-01-651-9481 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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