Piston, Valve4820-01-157-2976

NSN 4820-01-157-2976 · NIIN 011572976 · Part number M-1802JA

Siemens Energy, Inc. · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 16712

Government record, cited

NSN 4820-01-157-2976 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-157-2976. Manufacturer of record part number: M-1802JA.

Also searched as 4820-01-157-2976 · 4820011572976 · NIIN 011572976 · 01-157-2976 · FSC 4820 Valves, Nonpowered · CAGE 16712 · M-1802JA

Nearby stock numbers ← 4820-01-157-2970 Plate, Retaining, Valve · 4820-01-157-2977 Adapter Plate Assembly →

4820-01-157-2976 — Valves, Nonpowered

Features

Piston,valve — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Siemens Energy, Inc.

Identification

NSN: 4820-01-157-2976
NIIN: 011572976
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: M-1802JA
Manufacturer: Siemens Energy, Inc.

General Description

The Piston,valve, cataloged under National Stock Number 4820-01-157-2976, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Siemens Energy, Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Catalog Facts

Item Name	Piston,valve
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	Siemens Energy, Inc. (CAGE 16712)

Technical Specifications

Parameter	Value
NSN	4820-01-157-2976
Primary Part Number	M-1802JA
Item Name	Piston,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Siemens Energy, 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)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
M-1802JA PRIMARY	Siemens Energy, 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 4820-01-157-2976?

NSN 4820-01-157-2976 is a Piston,valve, manufactured by Siemens Energy, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-157-2976?

NSN 4820-01-157-2976 has 1 manufacturer part number on file: M-1802JA (Siemens Energy, Inc.).

Is NSN 4820-01-157-2976 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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