PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

N09439Piston,valve

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-00-036-1634 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-036-1634 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-036-1634. Primary manufacturer part number: N09439.
Features
  • Piston,valve — FSC 4820
  • 3 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 Piston,valve, cataloged under National Stock Number 4820-00-036-1634, 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 3 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.

Technical Specifications
ParameterValue
NSN4820-00-036-1634
Primary Part NumberN09439
Item NamePiston,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-00-036-1516N10686 INTERCHANGEABLE
Piston,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-00-036-1517N59921 INTERCHANGEABLE
Piston,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-00-036-1523N10737 INTERCHANGEABLE
Piston,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-00-036-1552N09442 INTERCHANGEABLE
Piston,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-00-217-2772N11124 INTERCHANGEABLE
Disk,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
8135-00-245-94395/8.030 INTERCHANGEABLE
Strapping
Independent Metal Strap Co Inc
4310-00-306-1319N11122 INTERCHANGEABLE
Cylinder Sleeve
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-00-403-5640N11190 INTERCHANGEABLE
Disk,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
5950-01-094-29509439 INTERCHANGEABLE
Transformer,power
A M I/ Coast Magnetics Inc. Dba Coast Magnetics
4820-01-178-8926N47568 INTERCHANGEABLE
Disk,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
Cross-Reference Index
Part NumberManufacturer
17389N Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
N09439 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
9439 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
4820-00-036-1516INTERCHANGEABLE
PISTON,VALVE
N10686
4820-00-036-1517INTERCHANGEABLE
PISTON,VALVE
N59921
4820-00-036-1523INTERCHANGEABLE
PISTON,VALVE
N10737
4820-00-036-1552INTERCHANGEABLE
PISTON,VALVE
N09442
4820-00-217-2772INTERCHANGEABLE
DISK,VALVE
N11124
8135-00-245-9439INTERCHANGEABLE
STRAPPING
5/8.030
4310-00-306-1319INTERCHANGEABLE
CYLINDER SLEEVE
N11122
4820-00-403-5640INTERCHANGEABLE
DISK,VALVE
N11190
5950-01-094-2950INTERCHANGEABLE
TRANSFORMER,POWER
9439
4820-01-178-8926INTERCHANGEABLE
DISK,VALVE
N47568
4820-01-179-6376INTERCHANGEABLE
PISTON,VALVE
N11975
5915-01-195-1981INTERCHANGEABLE
NETWORK,HYBRID CIRCUIT
848-01REV0PC8

Frequently Asked Questions

What is NSN 4820-00-036-1634?

NSN 4820-00-036-1634 is a Piston,valve, 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 4820-00-036-1634?

NSN 4820-00-036-1634 has 3 cross-referenced part numbers: 17389N (Leslie Controls, Inc. Dba Leslie Controls Inc), N09439 (Leslie Controls, Inc. Dba Leslie Controls Inc), 9439 (Leslie Controls, Inc. Dba Leslie Controls Inc).

What NSN replaces 4820-00-036-1634?

There are 12 known substitutes for 4820-00-036-1634: 4820-00-036-1516, 4820-00-036-1517, 4820-00-036-1523 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of N09439?

Key specifications for N09439: Special Features: FOR 2.000 IN. VLVE; LARGE END 1.000 IN. LG; 2.758 IN. DIA; CENTER BORED 1/2-13 NC2,GROOVED FOR 2 RINGS; SMALL END 1-1/8 IN. LG; 0.894 N. OD; 0.531 IN. ID IN. 1 total characteristics are documented in the Federal Logistics Information System.

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