PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40397-09Stem,fluid Valve

Trac Regulator Co., Inc. Dba Trac Regulator Co Inc · NSN 4820-01-242-8144 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-242-8144 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-242-8144. Primary manufacturer part number: 40397-09.
Features
  • Stem,fluid Valve — FSC 4820
  • Stem Actuating End Type: ROUNDED
  • Valve Size for Which Designed: 0.500 INCHES IN
  • Material: NICKEL ALLOY
  • Valve Model Number for Which Designed: 1/2 INCH STYL H IN
  • Material Document and Classification: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE
  • Valve Type for Which Designed: REGULATOR
  • 2 verified cross-references
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy construction
General Description

The Stem,fluid Valve, cataloged under National Stock Number 4820-01-242-8144, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Trac Regulator Co., Inc. Dba Trac Regulator Co Inc. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-242-8144
Primary Part Number40397-09
Item NameStem,fluid Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTrac Regulator Co., Inc. Dba Trac Regulator Co Inc
StatusACTIVE
Stem Actuating End TypeROUNDED
Valve Size for Which Designed0.500 INCHES IN
MaterialNICKEL ALLOY
Valve Model Number for Which Designed1/2 INCH STYL H IN
Material Document and ClassificationQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE
Valve Type for Which DesignedREGULATOR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4820-01-168-2161931-00 INTERCHANGEABLE
Disk,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-220-270440397-902 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-242-8146932-00 INTERCHANGEABLE
Retainer,disk,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-242-8149960-00 INTERCHANGEABLE
Body,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-243-1493 INTERCHANGEABLE
Guide,valve Stem
5340-01-243-3658 INTERCHANGEABLE
Seat,helical Compression Spring
4820-01-243-532560143-00 INTERCHANGEABLE
Guide,valve Stem
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Cross-Reference Index
Part NumberManufacturer
40397-09 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
40397-09 FIND 23 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
Related Parts
4820-01-168-2161INTERCHANGEABLE
DISK,VALVE
931-00
4820-01-220-2704INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
40397-902
4820-01-242-8146INTERCHANGEABLE
RETAINER,DISK,VALVE
932-00
4820-01-242-8149INTERCHANGEABLE
BODY,VALVE
960-00
4820-01-243-1493INTERCHANGEABLE
GUIDE,VALVE STEM
5340-01-243-3658INTERCHANGEABLE
SEAT,HELICAL COMPRESSION SPRING
4820-01-243-5325INTERCHANGEABLE
GUIDE,VALVE STEM
60143-00

Frequently Asked Questions

What is NSN 4820-01-242-8144?

NSN 4820-01-242-8144 is a Stem,fluid Valve, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-242-8144?

NSN 4820-01-242-8144 has 2 cross-referenced part numbers: 40397-09 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40397-09 FIND 23 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).

What NSN replaces 4820-01-242-8144?

There are 7 known substitutes for 4820-01-242-8144: 4820-01-168-2161, 4820-01-220-2704, 4820-01-242-8146 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40397-09?

Key specifications for 40397-09: Stem Actuating End Type: ROUNDED; Valve Size for Which Designed: 0.500 INCHES IN; Material: NICKEL ALLOY; Valve Model Number for Which Designed: 1/2 INCH STYL H IN. 6 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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