PartsTable TECHNICAL DATA SHEET

NSN 4820-01-363-3046Government record, cited

Valve, Check4820-01-363-3046

NSN 4820-01-363-3046 · NIIN 013633046 · Part number AND20640

Allied Marine Services Llc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 1QNM6

Government record, cited

NSN 4820-01-363-3046 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-363-3046. Manufacturer of record part number: AND20640.

Also searched as 4820-01-363-3046 · 4820013633046 · NIIN 013633046 · 01-363-3046 · FSC 4820 Valves, Nonpowered · CAGE 1QNM6 · AND20640

Nearby stock numbers ← 4820-01-363-3038 Seat, Valve · 4820-01-363-3047 Cock, Drain →

4820-01-363-3046 — Valves, Nonpowered

Features

Valve,check — FSC 4820
Valve Operation Method: AUTOMATIC
2 manufacturer part numbers on file
Manufacturer of record: Allied Marine Services Llc

Identification

NSN: 4820-01-363-3046
NIIN: 013633046
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: AND20640
Manufacturer: Allied Marine Services Llc

General Description

The Valve,check, cataloged under National Stock Number 4820-01-363-3046, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Allied Marine Services Llc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	4820-01-363-3046
Primary Part Number	AND20640
Item Name	Valve,check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Allied Marine Services Llc
Status	ACTIVE
Valve Operation Method	AUTOMATIC

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
AND20640	Itp Engines Uk Ltd (GBR)
AND20640 PRIMARY	Allied Marine Services Llc (USA)

Reference documents

Reference	Meaning
AND20640	5/9 Secondary reference Allied Marine Services, Llc Dba Allied Technical Services
AND20640	5/9 Secondary reference European Gas Turbines 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 4820-01-363-3046?

NSN 4820-01-363-3046 is a Valve,check, manufactured by Allied Marine Services Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-363-3046?

NSN 4820-01-363-3046 has 2 manufacturer part numbers on file: AND20640 (Itp Engines Uk Ltd), AND20640 (Allied Marine Services Llc).

What are the specifications of AND20640?

Key specifications for AND20640: End Item Identification: NAPIER TURBOCHARGERS LIMITED TURBOCHARGER MODEL NO. MS/HP204; Valve Operation Method: AUTOMATIC. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-363-3046 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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