PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

800659Valve,regulating,system Pressure

Lee Evans Defense Pool Inc · NSN 4820-01-480-6689 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-480-6689 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-480-6689. Primary manufacturer part number: 800659.
Features
  • Valve,regulating,system Pressure — FSC 4820
  • 4 verified cross-references
  • Primary manufacturer: Lee Evans Defense Pool Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,regulating,system Pressure, cataloged under National Stock Number 4820-01-480-6689, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Lee Evans Defense Pool Inc. This item has 4 commercial cross-references from 2 manufacturers, 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
NSN4820-01-480-6689
Primary Part Number800659
Item NameValve,regulating,system Pressure
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLee Evans Defense Pool Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5910-00-222-6008921-0031-010 INTERCHANGEABLE
Capacitor,variable,air Dielectri
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
4820-01-290-105540444-404 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4730-01-491-2301190-00 INTERCHANGEABLE
Tailpiece,union
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4730-01-491-2628196-00 INTERCHANGEABLE
Nut,union
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-499-336340444-408 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Cross-Reference Index
Part NumberManufacturer
40444-4 ASSY 40444-409 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
800659 PRIMARY Lee Evans Defense Pool Inc (USA)
40444-409 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
40444-4 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
Related Parts
5910-00-222-6008INTERCHANGEABLE
CAPACITOR,VARIABLE,AIR DIELECTRI
921-0031-010
4820-01-290-1055INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
40444-404
4730-01-491-2301INTERCHANGEABLE
TAILPIECE,UNION
190-00
4730-01-491-2628INTERCHANGEABLE
NUT,UNION
196-00
4820-01-499-3363INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
40444-408

Frequently Asked Questions

What is NSN 4820-01-480-6689?

NSN 4820-01-480-6689 is a Valve,regulating,system Pressure, manufactured by Lee Evans Defense Pool Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-480-6689?

NSN 4820-01-480-6689 has 4 cross-referenced part numbers: 40444-4 ASSY 40444-409 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 800659 (Lee Evans Defense Pool Inc), 40444-409 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40444-4 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).

What NSN replaces 4820-01-480-6689?

There are 5 known substitutes for 4820-01-480-6689: 5910-00-222-6008, 4820-01-290-1055, 4730-01-491-2301 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 800659?

Key specifications for 800659: End Item Identification: E/I 1 1/2 INCH TRAC STYLE 'H' SEA WATER PRESSURE REDUCING VALVE, TYPE 1 250 POUND; W/S WICHITA CLASS AOR 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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