Diaphragm, Valve, Flat4820-01-245-1913

NSN 4820-01-245-1913 · NIIN 012451913

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-245-1913 · 4820012451913 · NIIN 012451913 · 01-245-1913 · FSC 4820 Valves, Nonpowered · EL-21508-1 · EL-21508-1 PIECE 20 · EL-922-273

Nearby stock numbers ← 4820-01-245-1912 · 4820-01-245-2247 Seat, Valve →

4820-01-245-1913 — Valves, Nonpowered

Features

Diaphragm,valve,flat — FSC 4820
Outside Diameter: 4.244 INCHES NOMINAL IN
Style Designator: FLAT
Material Thickness: 0.012 INCHES NOMINAL IN
Center Hole Diameter: 0.375 INCHES NOMINAL IN
Material: PLASTIC
Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY FREE FROM MERCURY CONTAMINATION

Identification

NSN: 4820-01-245-1913
NIIN: 012451913
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Diaphragm,valve,flat, cataloged under National Stock Number 4820-01-245-1913, 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6 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-245-1913
Item Name	Diaphragm,valve,flat
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Outside Diameter	4.244 INCHES NOMINAL IN
Style Designator	FLAT
Material Thickness	0.012 INCHES NOMINAL IN
Center Hole Diameter	0.375 INCHES NOMINAL IN
Material	PLASTIC
Reference Number Differentiating Characteristics	AS DIFFERENTIATED BY FREE FROM MERCURY CONTAMINATION

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
EL-21508-1	D/9 Drawing number reference only Pentair Valves & Controls Us Lp Div Pentair Flow Control
EL-21508-1 PIECE 20	3/9 Design control — primary reference Pentair Valves & Controls Us Lp Div Pentair Flow Control
EL-922-273	5/9 Secondary reference Pentair Valves & Controls Us Lp Div Pentair Flow Control

Frequently Asked Questions

What is NSN 4820-01-245-1913?

NSN 4820-01-245-1913 is a Diaphragm,valve,flat, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-01-245-1913?

Key specifications for 4820-01-245-1913: Outside Diameter: 4.244 INCHES NOMINAL IN; Style Designator: FLAT; Material Thickness: 0.012 INCHES NOMINAL IN; Special Features: FOR NAVY NUCLEAR PROPULSION PLANT PRODUCTS ONLY. 6 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-245-1913 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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