Valve, Safety Relief4820-01-325-8298

NSN 4820-01-325-8298 · NIIN 013258298

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-325-8298 · 4820013258298 · NIIN 013258298 · 01-325-8298 · FSC 4820 Valves, Nonpowered

Nearby stock numbers ← 4820-01-325-8289 Disk, Valve · 4820-01-325-8303 Valve, Regulating, Temperature →

4820-01-325-8298 — Valves, Nonpowered

Features

Valve,safety Relief — FSC 4820
Flow Control Device: DISK
Flange Shape: ROUND ALL ENDS
Nominal Pipe Size Accommodated: 1.000 INCHES ALL ENDS IN
Flange Face Design: PLAIN ALL ENDS
Connection Type: FLANGE ALL ENDS
Style Designator: ANGLE FLANGED ENDS
Adjustable Pressure Range: +18.0 TO 32.0 POUNDS PER SQUARE INCH LBS

Identification

NSN: 4820-01-325-8298
NIIN: 013258298
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-325-8298, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-325-8298
Item Name	Valve,safety Relief
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Flow Control Device	DISK
Flange Shape	ROUND ALL ENDS
Nominal Pipe Size Accommodated	1.000 INCHES ALL ENDS IN
Flange Face Design	PLAIN ALL ENDS
Connection Type	FLANGE ALL ENDS
Style Designator	ANGLE FLANGED ENDS
Adjustable Pressure Range	+18.0 TO 32.0 POUNDS PER SQUARE INCH LBS
Nominal Outside Diameter	4.250 INCHES ALL ENDS IN
Disk Loading Method	SPRING
Media for Which Designed	STEAM SINGLE RESPONSE
Material	BRONZE BODY
Valve Operation Method	AUTOMATIC
Nominal Thickness	0.437 INCHES ALL ENDS IN

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

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
L2114C 1.00IPS 18T32PSI	3/9 Design control — primary reference Kunkle Industries Inc Lonergan Valve Div

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 4820-01-325-8298?

NSN 4820-01-325-8298 is a Valve,safety Relief, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-01-325-8298?

Key specifications for 4820-01-325-8298: Flow Control Device: DISK; Flange Shape: ROUND ALL ENDS; Nominal Pipe Size Accommodated: 1.000 INCHES ALL ENDS IN; Flange Face Design: PLAIN ALL ENDS. 13 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-325-8298 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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