Diaphragm, Actuator Valve, Special4820-01-137-5457

NSN 4820-01-137-5457 · NIIN 011375457 · Part number 78993

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

Government record, cited

NSN 4820-01-137-5457 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-137-5457. Manufacturer of record part number: 78993.

Also searched as 4820-01-137-5457 · 4820011375457 · NIIN 011375457 · 01-137-5457 · FSC 4820 Valves, Nonpowered · CAGE 09790 · 78993 · 78952 ITEM 25

Nearby stock numbers ← 4820-01-137-5456 Disk, Valve · 4820-01-137-5465 Handle, Valve →

4820-01-137-5457 — 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: 4820-01-137-5457
NIIN: 011375457
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 78993
Manufacturer: Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator

General Description

The Diaphragm,actuator Valve,special, cataloged under National Stock Number 4820-01-137-5457, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 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	4820-01-137-5457
Primary Part Number	78993
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

Cross-Reference Index

Part Number	Manufacturer
78993 PRIMARY	Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (USA)

Reference documents

Reference	Meaning
78952 ITEM 25	5/9 Secondary reference Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator

Frequently Asked Questions

What is NSN 4820-01-137-5457?

NSN 4820-01-137-5457 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 4820-01-137-5457?

NSN 4820-01-137-5457 has 1 manufacturer part number on file: 78993 (Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator).

Is NSN 4820-01-137-5457 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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