Valve, Expansion4820-01-644-4253

NSN 4820-01-644-4253 · NIIN 016444253 · Part number RWEV59

Cospolich Inc. · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 66682

Government record, cited

NSN 4820-01-644-4253 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-644-4253. Manufacturer of record part number: RWEV59.

Also searched as 4820-01-644-4253 · 4820016444253 · NIIN 016444253 · 01-644-4253 · FSC 4820 Valves, Nonpowered · CAGE 66682 · RWEV59 · EBFSE-AA-C

Nearby stock numbers ← 4820-01-644-4227 Valve, Expansion · 4820-01-644-4266 Valve, Calibrated Flow →

4820-01-644-4253 — Valves, Nonpowered

Features

Valve,expansion — FSC 4820
2 manufacturer part numbers on file
Manufacturer of record: Cospolich Inc.

Identification

NSN: 4820-01-644-4253
NIIN: 016444253
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: RWEV59
Manufacturer: Cospolich Inc.

General Description

The Valve,expansion, cataloged under National Stock Number 4820-01-644-4253, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Cospolich Inc.. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-644-4253
Primary Part Number	RWEV59
Item Name	Valve,expansion
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Cospolich Inc.
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
RWEV59 PRIMARY	Cospolich Inc. (USA)
EBFSE-AA-C	Parker-Hannifin Corp Div Sporlan Division (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 4820-01-644-4253?

NSN 4820-01-644-4253 is a Valve,expansion, manufactured by Cospolich Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-644-4253?

NSN 4820-01-644-4253 has 2 manufacturer part numbers on file: RWEV59 (Cospolich Inc.), EBFSE-AA-C (Parker-Hannifin Corp Div Sporlan Division).

What are the specifications of RWEV59?

Key specifications for RWEV59: Part Name Assigned by Controlling Agency: EXPANSION VALVE, 3/8" X 1/2" ODF; End Item Identification: WALK-IN COOLER. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-644-4253 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.

PartsTable Design LLC · partstable.com