PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40057-202Valve,regulating,temperature

Trac Regulator Co., Inc. Dba Trac Regulator Co Inc · NSN 4820-01-583-1579 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-583-1579 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-583-1579. Primary manufacturer part number: 40057-202.
Features
  • Valve,regulating,temperature — FSC 4820
  • Nondefinitive Spec/std Data: II TYPE AND 2 CLASS AND 250 SERIES
  • Specification/standard Data: 81349-MIL-V-19772A GOVERNMENT SPECIFICATION A
  • First End Bolt Circle Diameter: 5.500 INCHES NOMINAL IN
  • First End Style Designator: PLAIN
  • End Connection Quantity: 2
  • Valve Size: 3.000 INCHES IN
  • Material: COPPER ALLOY FLOW CONTROL DEVICE
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Flow Control Device construction
General Description

The Valve,regulating,temperature, cataloged under National Stock Number 4820-01-583-1579, 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 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-583-1579
Primary Part Number40057-202
Item NameValve,regulating,temperature
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTrac Regulator Co., Inc. Dba Trac Regulator Co Inc
StatusACTIVE
Nondefinitive Spec/std DataII TYPE AND 2 CLASS AND 250 SERIES
Specification/standard Data81349-MIL-V-19772A GOVERNMENT SPECIFICATION A
First End Bolt Circle Diameter5.500 INCHES NOMINAL IN
First End Style DesignatorPLAIN
End Connection Quantity2
Valve Size3.000 INCHES IN
MaterialCOPPER ALLOY FLOW CONTROL DEVICE
MaterialPLASTIC POLYTETRAFLUOROETHYLENE PACKING
Face to Face Distance10.750 INCHES NOMINAL IN
MaterialSTEEL CORROSION RESISTING STEM
First End Flange Outside Diameter6.625 INCHES NOMINAL IN
MaterialCOPPER ALLOY SEAT
Body StyleSTRAIGHT THRU
MaterialCOPPER ALLOY BODY
Temp AdjustabilityNOT ADJUSTABLE
First End Flange Shape StyleROUND W/ BOLT HOLES
Flow Control DeviceDISK, DUAL
Second End Relationship with First EndIDENTICAL
End Connection Spec/stdMIL-F-20042 250 LB CLASS LBS
First End Bolt Hole Diameter0.566 INCHES NOMINAL IN
First End Connection TypePLAIN FACE FLANGE
First End Bolt Hole Quantity8
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4820-01-315-259840174-401 INTERCHANGEABLE
Valve,regulating,temperature
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-325-904240084-802 INTERCHANGEABLE
Valve,regulating,temperature
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-449-210340054-407 INTERCHANGEABLE
Valve,regulating,temperature
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Cross-Reference Index
Part NumberManufacturer
40057-2 REV-/40057-202 Pamtech Inc (USA)
40057-202 PRIMARY Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
MIL-V-19772A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-19772 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
4820-01-315-2598INTERCHANGEABLE
VALVE,REGULATING,TEMPERATURE
40174-401
4820-01-325-9042INTERCHANGEABLE
VALVE,REGULATING,TEMPERATURE
40084-802
4820-01-449-2103INTERCHANGEABLE
VALVE,REGULATING,TEMPERATURE
40054-407

Frequently Asked Questions

What is NSN 4820-01-583-1579?

NSN 4820-01-583-1579 is a Valve,regulating,temperature, 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 4820-01-583-1579?

NSN 4820-01-583-1579 has 4 cross-referenced part numbers: 40057-2 REV-/40057-202 (Pamtech Inc), 40057-202 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), MIL-V-19772A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-19772 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 4820-01-583-1579?

There are 3 known substitutes for 4820-01-583-1579: 4820-01-315-2598, 4820-01-325-9042, 4820-01-449-2103. Verify interchangeability with system specifications before substitution.

What are the specifications of 40057-202?

Key specifications for 40057-202: Nondefinitive Spec/std Data: II TYPE AND 2 CLASS AND 250 SERIES; Specification/standard Data: 81349-MIL-V-19772A GOVERNMENT SPECIFICATION A; First End Bolt Circle Diameter: 5.500 INCHES NOMINAL IN; First End Style Designator: PLAIN. 24 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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