PartsTable TECHNICAL DATA SHEET

NSN 4820-01-259-0956Government record, cited

Valve, Compressor4820-01-259-0956

NSN 4820-01-259-0956 · NIIN 012590956 · Part number 45401601

W B Arnold Company, Inc. · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 2H266

Government record, cited

NSN 4820-01-259-0956 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-259-0956. Manufacturer of record part number: 45401601.

Also searched as 4820-01-259-0956 · 4820012590956 · NIIN 012590956 · 01-259-0956 · FSC 4820 Valves, Nonpowered · CAGE 2H266 · 45401601

Nearby stock numbers ← 4820-01-259-0951 Collar, Valve · 4820-01-259-0957 Valve, Compressor →

4820-01-259-0956 — Valves, Nonpowered

Features

Valve,compressor — FSC 4820
1 manufacturer part number on file
Manufacturer of record: W B Arnold Company, Inc.

Identification

NSN: 4820-01-259-0956
NIIN: 012590956
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 45401601
Manufacturer: W B Arnold Company, Inc.

General Description

The Valve,compressor, cataloged under National Stock Number 4820-01-259-0956, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is W B Arnold Company, Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Valve,compressor
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	W B Arnold Company, Inc. (CAGE 2H266)

Technical Specifications

Parameter	Value
NSN	4820-01-259-0956
Primary Part Number	45401601
Item Name	Valve,compressor
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	W B Arnold Company, Inc.
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)

Cross-Reference Index

Part Number	Manufacturer
45401601 PRIMARY	W B Arnold Company, Inc. (USA)

Reference documents

Reference	Meaning
45401601	5/9 Secondary reference Jhl and Associates Llc Dba Marinsolve
45401601	5/9 Secondary reference Wartsila Water Systems Limited
45401601	5/9 Secondary reference Hatlapa Marine Equipment 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 4820-01-259-0956?

NSN 4820-01-259-0956 is a Valve,compressor, manufactured by W B Arnold Company, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-259-0956?

NSN 4820-01-259-0956 has 1 manufacturer part number on file: 45401601 (W B Arnold Company, Inc.).

Is NSN 4820-01-259-0956 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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