Cover, End Relief Valve4820-01-180-1018

NSN 4820-01-180-1018 · NIIN 011801018 · Part number 052C0073-B021A

Circor Naval Solutions Llc Dba Warren Pumps · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 63857

Government record, cited

NSN 4820-01-180-1018 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-180-1018. Manufacturer of record part number: 052C0073-B021A.

Also searched as 4820-01-180-1018 · 4820011801018 · NIIN 011801018 · 01-180-1018 · FSC 4820 Valves, Nonpowered · CAGE 63857 · 052C0073-B021A

Nearby stock numbers ← 4820-01-180-1017 Poppet, Discharge, Valve · 4820-01-180-1020 Diaphragm, Actuator Valve, Special →

4820-01-180-1018 — Valves, Nonpowered

Features

Cover,end Relief Valve — FSC 4820
General Characteristics Item Description: STEEL, ASTM A216, GRADE WCB
1 manufacturer part number on file
Manufacturer of record: Circor Naval Solutions Llc Dba Warren Pumps

Identification

NSN: 4820-01-180-1018
NIIN: 011801018
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 052C0073-B021A
Manufacturer: Circor Naval Solutions Llc Dba Warren Pumps

General Description

The Cover,end Relief Valve, cataloged under National Stock Number 4820-01-180-1018, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. 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	4820-01-180-1018
Primary Part Number	052C0073-B021A
Item Name	Cover,end Relief Valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Circor Naval Solutions Llc Dba Warren Pumps
Status	ACTIVE
General Characteristics Item Description	STEEL, ASTM A216, GRADE WCB

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
052C0073-B021A PRIMARY	Circor Naval Solutions Llc Dba Warren Pumps (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 4820-01-180-1018?

NSN 4820-01-180-1018 is a Cover,end Relief Valve, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-180-1018?

NSN 4820-01-180-1018 has 1 manufacturer part number on file: 052C0073-B021A (Circor Naval Solutions Llc Dba Warren Pumps).

What are the specifications of 052C0073-B021A?

Key specifications for 052C0073-B021A: General Characteristics Item Description: STEEL, ASTM A216, GRADE WCB. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-180-1018 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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