PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20487Piston,valve

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-01-522-0609 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-522-0609 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-522-0609. Primary manufacturer part number: 20487.
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 4820-01-522-0609, 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.

Catalog Facts
Item NamePiston,valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersLeslie Controls, Inc. Dba Leslie Controls Inc (CAGE 35795)
Technical Specifications
ParameterValue
NSN4820-01-522-0609
Primary Part Number20487
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
7690-00-083-575720487 INTERCHANGEABLE
Decal
Northrop Grumman Systems Corporation Dba Aerospace Systems Div Aeronautics Systems
5935-00-199-2635 INTERCHANGEABLE
Connector,plug,electrical
3120-01-025-715020487 INTERCHANGEABLE
Bearing,sleeve
Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems
5331-01-058-402520487 INTERCHANGEABLE
O-Ring
Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp
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
4820-01-304-1921LAN-1 1/2IN,13814N 10T135PSI INTERCHANGEABLE
Valve,safety Relief
Leslie Controls, Inc. Dba Leslie Controls Inc
3020-01-315-410620487-1 INTERCHANGEABLE
Pulley,groove
United States Department of the Navy Dba Naval Surface Warfare Center Panama City
5310-01-499-356920487 INTERCHANGEABLE
Nut,self-Locking,hexagon
Itw Gse Inc.
4820-01-522-0594LAN-1 1-1/2IN AND 13814N INTERCHANGEABLE
Valve,regulating,fluid Pressure
Leslie Controls, Inc. Dba Leslie Controls Inc
Cross-Reference Index
Part NumberManufacturer
13814N PC NO 5 P/N 20487 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
20487 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
13814N Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
7690-00-083-5757INTERCHANGEABLE
DECAL
20487
5935-00-199-2635INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
3120-01-025-7150INTERCHANGEABLE
BEARING,SLEEVE
20487
5331-01-058-4025INTERCHANGEABLE
O-RING
20487
4820-01-183-4734INTERCHANGEABLE
STEM,FLUID VALVE
N23402
3040-01-183-4759INTERCHANGEABLE
PISTON,LINEAR ACTUATING CYLINDER
20489
4820-01-304-1921INTERCHANGEABLE
VALVE,SAFETY RELIEF
LAN-1 1/2IN,13814N 10T135PSI
3020-01-315-4106INTERCHANGEABLE
PULLEY,GROOVE
20487-1
5310-01-499-3569INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
20487
4820-01-522-0594INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
LAN-1 1-1/2IN AND 13814N
4820-01-522-0598INTERCHANGEABLE
SEAT,VALVE
24689
4820-01-522-0616INTERCHANGEABLE
RETAINER,DISK,VALVE
24691

Frequently Asked Questions

What is NSN 4820-01-522-0609?

NSN 4820-01-522-0609 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 4820-01-522-0609?

NSN 4820-01-522-0609 has 3 cross-referenced part numbers: 13814N PC NO 5 P/N 20487 (Leslie Controls, Inc. Dba Leslie Controls Inc), 20487 (Leslie Controls, Inc. Dba Leslie Controls Inc), 13814N (Leslie Controls, Inc. Dba Leslie Controls Inc).

What NSN replaces 4820-01-522-0609?

There are 12 known substitutes for 4820-01-522-0609: 7690-00-083-5757, 5935-00-199-2635, 3120-01-025-7150 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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