Seat, Valve4820-01-289-9594

NSN 4820-01-289-9594 · NIIN 012899594 · Part number F-637-31-3IN PC20

Nibco Inc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 12168

Government record, cited

NSN 4820-01-289-9594 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-289-9594. Manufacturer of record part number: F-637-31-3IN PC20.

Also searched as 4820-01-289-9594 · 4820012899594 · NIIN 012899594 · 01-289-9594 · FSC 4820 Valves, Nonpowered · CAGE 12168 · F-637-31-3IN PC20

Nearby stock numbers ← 4820-01-289-9593 Seat, Valve · 4820-01-289-9595 Seat, Valve →

4820-01-289-9594 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
Style Designator: PLAIN
Material: IRON OVERALL
1 manufacturer part number on file
Manufacturer of record: Nibco Inc

Identification

NSN: 4820-01-289-9594
NIIN: 012899594
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: F-637-31-3IN PC20
Manufacturer: Nibco Inc

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-289-9594, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Nibco 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. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-289-9594
Primary Part Number	F-637-31-3IN PC20
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Nibco Inc
Status	ACTIVE
Style Designator	PLAIN
Material	IRON 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

Cross-Reference Index

Part Number	Manufacturer
F-637-31-3IN PC20 PRIMARY	Nibco Inc (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 4820-01-289-9594?

NSN 4820-01-289-9594 is a Seat,valve, manufactured by Nibco Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-289-9594?

NSN 4820-01-289-9594 has 1 manufacturer part number on file: F-637-31-3IN PC20 (Nibco Inc).

What are the specifications of F-637-31-3IN PC20?

Key specifications for F-637-31-3IN PC20: Style Designator: PLAIN; Material: IRON OVERALL. 2 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-289-9594 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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