PartsTable TECHNICAL DATA SHEET

NSN 4820-01-105-1957Government record, cited

Valve, Ball4820-01-105-1957

NSN 4820-01-105-1957 · NIIN 011051957

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-105-1957 · 4820011051957 · NIIN 011051957 · 01-105-1957 · FSC 4820 Valves, Nonpowered · 845-4558743 ASSEMBLY B · 2642-787-01 ASSEMBLY B · 845-4558743

Nearby stock numbers ← 4820-01-105-1955 Valve, Butterfly · 4820-01-105-2054 Parts Kit, Safety Relief Valve →

4820-01-105-1957 — Valves, Nonpowered

Features

Valve,ball — FSC 4820
Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Maximum Operating Temp: 180.0 FAHRENHEIT SINGLE RESPONSE DEGF
Media for Which Designed: HYDRAULIC FLUID, MINERAL BASE SINGLE RESPONSE
Material: STEEL CORROSION RESISTING FLOW CONTROL DEVICE
Material: STEEL CORROSION RESISTING BODY
Material: COPPER ALLOY STEM

Identification

NSN: 4820-01-105-1957
NIIN: 011051957
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Valve,ball, cataloged under National Stock Number 4820-01-105-1957, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government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	4820-01-105-1957
Item Name	Valve,ball
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Operating Pressure	3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Maximum Operating Temp	180.0 FAHRENHEIT SINGLE RESPONSE DEGF
Media for Which Designed	HYDRAULIC FLUID, MINERAL BASE SINGLE RESPONSE
Material	STEEL CORROSION RESISTING FLOW CONTROL DEVICE
Material	STEEL CORROSION RESISTING BODY
Material	COPPER ALLOY STEM

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.

4820-01-105-73272642-787-01 ASSEMBLY D POSSIBLE MATCH

VALVE,BALL

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-115-09712641-809-42 ITEM 84 POSSIBLE MATCH

DISK,VALVE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-115-10132641-809-42 ITEM 78 POSSIBLE MATCH

STEM,FLUID VALVE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-124-27882641-809-42 ITEM 80 POSSIBLE MATCH

DISK,VALVE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-134-36832641-809-42 ITEM 74 POSSIBLE MATCH

STEM,FLUID VALVE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-151-79142642-787-01 ASSEMBLY G POSSIBLE MATCH

VALVE,BALL

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-153-80862641-809-42-5X2640-801X02-6 POSSIBLE MATCH

PARTS KIT,BALL VALVE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-155-01872642-787-01 ASSEMBLY A POSSIBLE MATCH

VALVE,BALL

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
845-4558743 ASSEMBLY B	5/2 Secondary reference U.S. Government activity
2642-787-01 ASSEMBLY B	3/2 Design control — primary reference U.S. Government activity
845-4558743	D/9 Drawing number reference only U.S. Government activity

Related Parts

4820-01-105-7327POSSIBLE MATCH

VALVE,BALL

2642-787-01 ASSEMBLY D

4820-01-115-0971POSSIBLE MATCH

DISK,VALVE

2641-809-42 ITEM 84

4820-01-115-1013POSSIBLE MATCH

STEM,FLUID VALVE

2641-809-42 ITEM 78

4820-01-124-2788POSSIBLE MATCH

DISK,VALVE

2641-809-42 ITEM 80

4820-01-134-3683POSSIBLE MATCH

STEM,FLUID VALVE

2641-809-42 ITEM 74

4820-01-151-7914POSSIBLE MATCH

VALVE,BALL

2642-787-01 ASSEMBLY G

4820-01-153-8086POSSIBLE MATCH

PARTS KIT,BALL VALVE

2641-809-42-5X2640-801X02-6

4820-01-155-0187POSSIBLE MATCH

VALVE,BALL

2642-787-01 ASSEMBLY A

Frequently Asked Questions

What is NSN 4820-01-105-1957?

NSN 4820-01-105-1957 is a Valve,ball, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-01-105-1957?

8 possible matches (shared part number, not a government interchangeability claim): 4820-01-105-7327, 4820-01-115-0971, 4820-01-115-1013. Verify interchangeability with system specifications before substitution.

What are the specifications of 4820-01-105-1957?

Key specifications for 4820-01-105-1957: Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Maximum Operating Temp: 180.0 FAHRENHEIT SINGLE RESPONSE DEGF; Media for Which Designed: HYDRAULIC FLUID, MINERAL BASE SINGLE RESPONSE; Material: STEEL CORROSION RESISTING FLOW CONTROL DEVICE. 6 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-105-1957 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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