PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

Y303701121Valve,regulating,fluid Pressure

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-01-086-8455 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-086-8455 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-086-8455. Primary manufacturer part number: Y303701121.
Features
  • Valve,regulating,fluid Pressure — FSC 4820
  • 8 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,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-086-8455, 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 8 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameValve,regulating,fluid Pressure
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersLeslie Controls, Inc. Dba Leslie Controls Inc (CAGE 35795)
Technical Specifications
ParameterValue
NSN4820-01-086-8455
Primary Part NumberY303701121
Item NameValve,regulating,fluid Pressure
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-00-046-4617 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4310-00-306-1319N11122 INTERCHANGEABLE
Cylinder Sleeve
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-00-433-5992 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-00-435-7991Y303700610 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-00-573-7612 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-00-862-4691 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-00-873-8948Y303700910 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-00-935-5359 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-00-943-4036 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-01-103-329612397N, LNS5, 50 TO 150PSI INTERCHANGEABLE
Valve,regulating,fluid Pressure
Leslie Controls, Inc. Dba Leslie Controls Inc
Cross-Reference Index
Part NumberManufacturer
Y303701121 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
3" LNS-5 600#FLG. Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
17390N Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
17390N/E LNS-5 21256N/B MOD3IN Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
17390N LNS-5 3IN Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
17390N/E LNS-5 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
3IN LNS-5 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
LNS4 CDS-21256N Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
4820-00-046-4617INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4310-00-306-1319INTERCHANGEABLE
CYLINDER SLEEVE
N11122
4820-00-433-5992INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-00-435-7991INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
Y303700610
4820-00-573-7612INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-00-862-4691INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-00-873-8948INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
Y303700910
4820-00-935-5359INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-00-943-4036INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-01-103-3296INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
12397N, LNS5, 50 TO 150PSI
4820-01-111-0784INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
Y303700611
4820-01-128-2297INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
Y303700711

Frequently Asked Questions

What is NSN 4820-01-086-8455?

NSN 4820-01-086-8455 is a Valve,regulating,fluid Pressure, 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 4820-01-086-8455?

NSN 4820-01-086-8455 has 8 cross-referenced part numbers: Y303701121 (Leslie Controls, Inc. Dba Leslie Controls Inc), 3" LNS-5 600#FLG. (Leslie Controls, Inc. Dba Leslie Controls Inc), 17390N (Leslie Controls, Inc. Dba Leslie Controls Inc), 17390N/E LNS-5 21256N/B MOD3IN (Leslie Controls, Inc. Dba Leslie Controls Inc), 17390N LNS-5 3IN (Leslie Controls, Inc. Dba Leslie Controls Inc) and 3 more.

What NSN replaces 4820-01-086-8455?

There are 12 known substitutes for 4820-01-086-8455: 4820-00-046-4617, 4310-00-306-1319, 4820-00-433-5992 and 9 more. Verify interchangeability with system specifications before substitution.

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