PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

LAN-1 1/2IN,13814N 10T135PSIValve,safety Relief

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-01-304-1921 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-304-1921 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-304-1921. Primary manufacturer part number: LAN-1 1/2IN,13814N 10T135PSI.
Features
  • Valve,safety Relief — FSC 4820
  • 4 verified cross-references
  • Primary manufacturer: Leslie Controls, Inc. Dba Leslie Controls Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-304-1921, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameValve,safety Relief
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersLeslie Controls, Inc. Dba Leslie Controls Inc (CAGE 35795)
Technical Specifications
ParameterValue
NSN4820-01-304-1921
Primary Part NumberLAN-1 1/2IN,13814N 10T135PSI
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
4820-01-183-4734N23402 INTERCHANGEABLE
Stem,fluid Valve
Leslie Controls, Inc. Dba Leslie Controls Inc
3040-01-183-475920489 INTERCHANGEABLE
Piston,linear Actuating Cylinder
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-01-522-0594LAN-1 1-1/2IN AND 13814N INTERCHANGEABLE
Valve,regulating,fluid Pressure
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-01-522-059824689 INTERCHANGEABLE
Seat,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-01-522-060920487 INTERCHANGEABLE
Piston,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-01-522-061624691 INTERCHANGEABLE
Retainer,disk,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
Cross-Reference Index
Part NumberManufacturer
LAN-1 1-2IN 138 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
LAN-1 1/2IN,13814N 10T135PSI PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
13814N 1/2IN 10T135PSI Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
13814N Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
4820-01-183-4734INTERCHANGEABLE
STEM,FLUID VALVE
N23402
3040-01-183-4759INTERCHANGEABLE
PISTON,LINEAR ACTUATING CYLINDER
20489
4820-01-522-0594INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
LAN-1 1-1/2IN AND 13814N
4820-01-522-0598INTERCHANGEABLE
SEAT,VALVE
24689
4820-01-522-0609INTERCHANGEABLE
PISTON,VALVE
20487
4820-01-522-0616INTERCHANGEABLE
RETAINER,DISK,VALVE
24691

Frequently Asked Questions

What is NSN 4820-01-304-1921?

NSN 4820-01-304-1921 is a Valve,safety Relief, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-304-1921?

NSN 4820-01-304-1921 has 4 cross-referenced part numbers: LAN-1 1-2IN 138 (Leslie Controls, Inc. Dba Leslie Controls Inc), LAN-1 1/2IN,13814N 10T135PSI (Leslie Controls, Inc. Dba Leslie Controls Inc), 13814N 1/2IN 10T135PSI (Leslie Controls, Inc. Dba Leslie Controls Inc), 13814N (Leslie Controls, Inc. Dba Leslie Controls Inc).

What NSN replaces 4820-01-304-1921?

There are 6 known substitutes for 4820-01-304-1921: 4820-01-183-4734, 3040-01-183-4759, 4820-01-522-0594 and 3 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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