PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

Y402954001Valve,regulating,fluid Pressure

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-01-537-9814 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-537-9814 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-537-9814. Primary manufacturer part number: Y402954001.
Features
  • Valve,regulating,fluid Pressure — 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,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-537-9814, 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 2 manufacturers, 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); Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M (CAGE 81349)
Technical Specifications
ParameterValue
NSN4820-01-537-9814
Primary Part NumberY402954001
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
4820-00-096-8563 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-00-455-8505P1400-1.5 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Cooper Interconnect, Inc. Dba Cooper Interconnect Div Interconnect
4820-00-455-8577 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-01-111-0783 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-01-114-5894 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-01-145-6473 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-01-145-6474 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-01-238-0202 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-01-340-228640490-9 PART 40490-903 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-436-9365 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Cross-Reference Index
Part NumberManufacturer
23891N Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
ULABYN-1/Y402954001 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
MIL-V-24384 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Y402954001 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
4820-00-096-8563INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-00-455-8505INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
P1400-1.5
4820-00-455-8577INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-01-111-0783INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-01-114-5894INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-01-145-6473INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-01-145-6474INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-01-238-0202INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-01-340-2286INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
40490-9 PART 40490-903
4820-01-436-9365INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-01-561-8092INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-01-604-7149INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
ULABYN-1X

Frequently Asked Questions

What is NSN 4820-01-537-9814?

NSN 4820-01-537-9814 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 4820-01-537-9814?

NSN 4820-01-537-9814 has 4 cross-referenced part numbers: 23891N (Leslie Controls, Inc. Dba Leslie Controls Inc), ULABYN-1/Y402954001 (Leslie Controls, Inc. Dba Leslie Controls Inc), MIL-V-24384 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), Y402954001 (Leslie Controls, Inc. Dba Leslie Controls Inc).

What NSN replaces 4820-01-537-9814?

There are 12 known substitutes for 4820-01-537-9814: 4820-00-096-8563, 4820-00-455-8505, 4820-00-455-8577 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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