PartsTable TECHNICAL DATA SHEET

NSN 4820-01-137-9323Government record, cited

Diaphragm, Actuator Valve, Special4820-01-137-9323

NSN 4820-01-137-9323 · NIIN 011379323 · Part number 78995

Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 09790

Government record, cited

NSN 4820-01-137-9323 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-137-9323. Manufacturer of record part number: 78995.

Also searched as 4820-01-137-9323 · 4820011379323 · NIIN 011379323 · 01-137-9323 · FSC 4820 Valves, Nonpowered · CAGE 09790 · 78995 · 78952 · 78952 ITEM 18

Nearby stock numbers ← 4820-01-137-9322 · 4820-01-137-9641 Valve, Safety Relief →

4820-01-137-9323 — Valves, Nonpowered

Features

Diaphragm,actuator Valve,special — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator

Identification

NSN: 4820-01-137-9323
NIIN: 011379323
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 78995
Manufacturer: Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator

General Description

The Diaphragm,actuator Valve,special, cataloged under National Stock Number 4820-01-137-9323, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts

Item Name	Diaphragm,actuator Valve,special
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (CAGE 09790)

Technical Specifications

Parameter	Value
NSN	4820-01-137-9323
Primary Part Number	78995
Item Name	Diaphragm,actuator Valve,special
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
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

⇄ Related Items 5

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

5920-01-177-634178952 POSSIBLE MATCH

FUSE,CARTRIDGE

Possible match (shared part number)International Business Machines Corp Parts Order Center Dept E - 54

1280-01-208-8417 POSSIBLE MATCH

INTERVALOMETER,BOMB RELEASE

Possible match (shared part number)

4820-01-213-164078952 POSSIBLE MATCH

VALVE,PILOT

Possible match (shared part number)Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator

4330-01-213-780420020-500-10 POSSIBLE MATCH

FILTERING DISK,FLUID

Possible match (shared part number)Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div

5340-01-656-865578995 POSSIBLE MATCH

STRAP,RETAINING

Possible match (shared part number)Malabar

Cross-Reference Index

Part Number	Manufacturer
78995 PRIMARY	Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (USA)

Reference documents

Reference	Meaning
78952	D/9 Drawing number reference only Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
78952 ITEM 18	5/9 Secondary reference Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator

Related Parts

5920-01-177-6341POSSIBLE MATCH

FUSE,CARTRIDGE

78952

1280-01-208-8417POSSIBLE MATCH

INTERVALOMETER,BOMB RELEASE

4820-01-213-1640POSSIBLE MATCH

VALVE,PILOT

78952

4330-01-213-7804POSSIBLE MATCH

FILTERING DISK,FLUID

20020-500-10

5340-01-656-8655POSSIBLE MATCH

STRAP,RETAINING

78995

Frequently Asked Questions

What is NSN 4820-01-137-9323?

NSN 4820-01-137-9323 is a Diaphragm,actuator Valve,special, manufactured by Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-137-9323?

NSN 4820-01-137-9323 has 1 manufacturer part number on file: 78995 (Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator).

What NSN replaces 4820-01-137-9323?

5 possible matches (shared part number, not a government interchangeability claim): 5920-01-177-6341, 1280-01-208-8417, 4820-01-213-1640. Verify interchangeability with system specifications before substitution.

Is NSN 4820-01-137-9323 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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