Disk, Valve4820-01-326-3945

NSN 4820-01-326-3945 · NIIN 013263945

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-326-3945 · 4820013263945 · NIIN 013263945 · 01-326-3945 · FSC 4820 Valves, Nonpowered · 480045-31 · 529-5904795 ITEM 31 · 480045 ITEM 31

Nearby stock numbers ← 4820-01-326-3699 Gear Operator, Valve · 4820-01-326-3946 Disk, Valve →

4820-01-326-3945 — Valves, Nonpowered

Features

Disk,valve — FSC 4820
Pressure Rating: 190.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
Temp Rating: 100.0 FAHRENHEIT NOMINAL DEGF
Outside Diameter: 2.250 INCHES NOMINAL IN
Style Designator: PLUG
Seat Angle: 45.0 DEGREES NOMINAL
Nominal Thread Size: 1.875 INCHES IN
Thread Class: 2B

Identification

NSN: 4820-01-326-3945
NIIN: 013263945
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Disk,valve, cataloged under National Stock Number 4820-01-326-3945, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-326-3945
Item Name	Disk,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Pressure Rating	190.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
Temp Rating	100.0 FAHRENHEIT NOMINAL DEGF
Outside Diameter	2.250 INCHES NOMINAL IN
Style Designator	PLUG
Seat Angle	45.0 DEGREES NOMINAL
Nominal Thread Size	1.875 INCHES IN
Thread Class	2B
Thread Quantity Per Inch	12
Material	NICKEL ALLOY
Thread Series Designator	UN

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

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

Reference documents

Reference	Meaning
480045-31	3/9 Design control — primary reference Huntington Ingalls Incorporated Div Ingalls Shipbuilding
529-5904795 ITEM 31	5/9 Secondary reference Naval Sea Systems Command
480045 ITEM 31	C/1 Advisory reference — outside the item-of-supply concept Huntington Ingalls Incorporated Div Ingalls Shipbuilding

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 4820-01-326-3945?

NSN 4820-01-326-3945 is a Disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-01-326-3945?

Key specifications for 4820-01-326-3945: Overall Height: 5.812 INCHES NOMINAL IN; Pressure Rating: 190.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Temp Rating: 100.0 FAHRENHEIT NOMINAL DEGF; Outside Diameter: 2.250 INCHES NOMINAL IN. 10 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-326-3945 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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