PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

U601099706 & A138100010 & A21503Valve,regulating,temperature

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-01-252-7881 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-252-7881 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-252-7881. Primary manufacturer part number: U601099706 & A138100010 & A21503.
Features
  • Valve,regulating,temperature — FSC 4820
  • 7 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,temperature, cataloged under National Stock Number 4820-01-252-7881, 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 7 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameValve,regulating,temperature
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersLeslie Controls, Inc. Dba Leslie Controls Inc (CAGE 35795); Hunt Valve Company Inc Dba Union Flonetics (CAGE 34889)
Technical Specifications
ParameterValue
NSN4820-01-252-7881
Primary Part NumberU601099706 & A138100010 & A21503
Item NameValve,regulating,temperature
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
4820-01-252-7458 INTERCHANGEABLE
Barrel Indicator,valve,regulatin
4820-01-252-7459 INTERCHANGEABLE
Packing Box,valve,regulating,tem
4820-01-441-3808U601099706 AND A107100010 INTERCHANGEABLE
Valve,regulating,temperature
Leslie Controls, Inc. Dba Leslie Controls Inc
5995-01-473-1054D50363 INTERCHANGEABLE
Cable Assembly,radio Frequency
Phoenix Logistics, Llc
Cross-Reference Index
Part NumberManufacturer
U601099706 & A138100010 & A21503 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
A138100010 AND A21503 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
U601099706 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
D50363 Hunt Valve Company Inc Dba Union Flonetics (USA)
ME-2 .50IPS 50TO150 DEG F Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
T4 1-2IN AND D5 Hunt Valve Company Inc Dba Union Flonetics (USA)
T4 .50IN D50363 Hunt Valve Company Inc Dba Union Flonetics (USA)
Related Parts
4820-01-252-7458INTERCHANGEABLE
BARREL INDICATOR,VALVE,REGULATIN
4820-01-252-7459INTERCHANGEABLE
PACKING BOX,VALVE,REGULATING,TEM
4820-01-441-3808INTERCHANGEABLE
VALVE,REGULATING,TEMPERATURE
U601099706 AND A107100010
5995-01-473-1054INTERCHANGEABLE
CABLE ASSEMBLY,RADIO FREQUENCY
D50363

Frequently Asked Questions

What is NSN 4820-01-252-7881?

NSN 4820-01-252-7881 is a Valve,regulating,temperature, 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 4820-01-252-7881?

NSN 4820-01-252-7881 has 7 cross-referenced part numbers: U601099706 & A138100010 & A21503 (Leslie Controls, Inc. Dba Leslie Controls Inc), A138100010 AND A21503 (Leslie Controls, Inc. Dba Leslie Controls Inc), U601099706 (Leslie Controls, Inc. Dba Leslie Controls Inc), D50363 (Hunt Valve Company Inc Dba Union Flonetics), ME-2 .50IPS 50TO150 DEG F (Leslie Controls, Inc. Dba Leslie Controls Inc) and 2 more.

What NSN replaces 4820-01-252-7881?

There are 4 known substitutes for 4820-01-252-7881: 4820-01-252-7458, 4820-01-252-7459, 4820-01-441-3808 and 1 more. Verify interchangeability with system specifications before substitution.

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