Diaphragm, Valve, Flat4820-01-328-2256

NSN 4820-01-328-2256 · NIIN 013282256 · Part number P28-22

Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 75214

Government record, cited

NSN 4820-01-328-2256 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-328-2256. Manufacturer of record part number: P28-22.

Also searched as 4820-01-328-2256 · 4820013282256 · NIIN 013282256 · 01-328-2256 · FSC 4820 Valves, Nonpowered · CAGE 75214 · P28-22

Nearby stock numbers ← 4820-01-328-2254 Disk, Valve · 4820-01-328-2501 Valve, Relief, Pressure and Temper →

4820-01-328-2256 — Valves, Nonpowered

Features

Diaphragm,valve,flat — FSC 4820
Media for Which Designed: AIR
1 manufacturer part number on file
Manufacturer of record: Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc

Identification

NSN: 4820-01-328-2256
NIIN: 013282256
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: P28-22
Manufacturer: Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc

General Description

The Diaphragm,valve,flat, cataloged under National Stock Number 4820-01-328-2256, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-328-2256
Primary Part Number	P28-22
Item Name	Diaphragm,valve,flat
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc
Status	ACTIVE
Media for Which Designed	AIR

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
P28-22 PRIMARY	Kahlenberg Industries, Inc. Dba Kahlenberg Industries 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 4820-01-328-2256?

NSN 4820-01-328-2256 is a Diaphragm,valve,flat, manufactured by Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-328-2256?

NSN 4820-01-328-2256 has 1 manufacturer part number on file: P28-22 (Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc).

What are the specifications of P28-22?

Key specifications for P28-22: Media for Which Designed: AIR; End Item Identification: AIR OPERATED WHISTLE S-203CHT. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-328-2256 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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