PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

Y204556001 AND N39141Valve,pilot

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-01-222-8323 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-222-8323 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-222-8323. Primary manufacturer part number: Y204556001 AND N39141.
Features
  • Valve,pilot — FSC 4820
  • General Characteristics Item Description: CARBON STEEL,CADMIUM PLATED SPRING AND CASE;SIZE 0.500 IN.;FLANGED 150 LB PER ASA B16.5;ADJUSTABLE LEVEL RANGE 2 TO 20 PSI,WATER;MAX STATIC PRESSURE 300 PSIG LBS
  • 5 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,pilot, cataloged under National Stock Number 4820-01-222-8323, 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. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-222-8323
Primary Part NumberY204556001 AND N39141
Item NameValve,pilot
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
General Characteristics Item DescriptionCARBON STEEL,CADMIUM PLATED SPRING AND CASE;SIZE 0.500 IN.;FLANGED 150 LB PER ASA B16.5;ADJUSTABLE LEVEL RANGE 2 TO 20 PSI,WATER;MAX STATIC PRESSURE 300 PSIG LBS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4820-01-058-4343N38059 INTERCHANGEABLE
Stem,needle Valve
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-01-222-8449N31837 INTERCHANGEABLE
Diaphragm,valve,flat
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-01-222-9667N16319 INTERCHANGEABLE
Sleeve,adjusting,pi
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-01-279-3085N30665 INTERCHANGEABLE
Cap,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
4810-01-592-210614801N INTERCHANGEABLE
Valve,flow Control
Leslie Controls, Inc. Dba Leslie Controls Inc
Cross-Reference Index
Part NumberManufacturer
14801N Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
LAPN1 W/A 39141 2T20PSI Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
14801N AND LAPN1 2T20PSI Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
LAPN1 AND 14801N 2T20PSI Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Y204556001 AND N39141 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
4820-01-058-4343INTERCHANGEABLE
STEM,NEEDLE VALVE
N38059
4820-01-222-8449INTERCHANGEABLE
DIAPHRAGM,VALVE,FLAT
N31837
4820-01-222-9667INTERCHANGEABLE
SLEEVE,ADJUSTING,PI
N16319
4820-01-279-3085INTERCHANGEABLE
CAP,VALVE
N30665
4810-01-592-2106INTERCHANGEABLE
VALVE,FLOW CONTROL
14801N

Frequently Asked Questions

What is NSN 4820-01-222-8323?

NSN 4820-01-222-8323 is a Valve,pilot, 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 4820-01-222-8323?

NSN 4820-01-222-8323 has 5 cross-referenced part numbers: 14801N (Leslie Controls, Inc. Dba Leslie Controls Inc), LAPN1 W/A 39141 2T20PSI (Leslie Controls, Inc. Dba Leslie Controls Inc), 14801N AND LAPN1 2T20PSI (Leslie Controls, Inc. Dba Leslie Controls Inc), LAPN1 AND 14801N 2T20PSI (Leslie Controls, Inc. Dba Leslie Controls Inc), Y204556001 AND N39141 (Leslie Controls, Inc. Dba Leslie Controls Inc).

What NSN replaces 4820-01-222-8323?

There are 5 known substitutes for 4820-01-222-8323: 4820-01-058-4343, 4820-01-222-8449, 4820-01-222-9667 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of Y204556001 AND N39141?

Key specifications for Y204556001 AND N39141: General Characteristics Item Description: CARBON STEEL,CADMIUM PLATED SPRING AND CASE;SIZE 0.500 IN.;FLANGED 150 LB PER ASA B16.5;ADJUSTABLE LEVEL RANGE 2 TO 20 PSI,WATER;MAX STATIC PRESSURE 300 PSIG LBS. 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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