PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40103-901Valve,regulating,temperature

Trac Regulator Co., Inc. Dba Trac Regulator Co Inc · NSN 4820-01-299-8463 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-299-8463 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-299-8463. Primary manufacturer part number: 40103-901.
Features
  • Valve,regulating,temperature — FSC 4820
  • Bulb Diameter: 1.125 INCHES NOMINAL IN
  • Body Style: STRAIGHT THRU
  • Material: COPPER BULB
  • First End Style Designator: SOCKET W/BRAZING RING
  • Thermostatic Element: LIQUID IMMERSION TYPE
  • End Connection Quantity: 2
  • Material: COPPER ALLOY BODY
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Bulb construction
General Description

The Valve,regulating,temperature, cataloged under National Stock Number 4820-01-299-8463, 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 15 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-299-8463
Primary Part Number40103-901
Item NameValve,regulating,temperature
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTrac Regulator Co., Inc. Dba Trac Regulator Co Inc
StatusACTIVE
Bulb Diameter1.125 INCHES NOMINAL IN
Body StyleSTRAIGHT THRU
MaterialCOPPER BULB
First End Style DesignatorSOCKET W/BRAZING RING
Thermostatic ElementLIQUID IMMERSION TYPE
End Connection Quantity2
MaterialCOPPER ALLOY BODY
MaterialNICKEL ALLOY SEAT
Two-Way Valve ActionREVERSE ACTING
Temp AdjustabilityADJUSTABLE
First End Outside Diameter Tube Accommodated1.250 INCHES NOMINAL IN
MaterialCOPPER ALLOY STEM
First End Connection TypeUNTHREADED INTERNAL TUBE
Second End Relationship with First EndIDENTICAL
Bulb Length12.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-156-8102SMN100K+COL INTERCHANGEABLE
Bearing,ball,annular
Timken Co Div the Timken Company
1420-00-446-52194010-3 INTERCHANGEABLE
Insert,retaining
Hamilton Sundstrand Corporation
1630-00-607-84479430273 INTERCHANGEABLE
Wheel,landing Gear
Meggitt Aircraft Braking Systems Corporation
5905-00-636-9263 INTERCHANGEABLE
Resistor Assembly
5940-00-825-2624012-2007-479 INTERCHANGEABLE
Terminal,feedthru
Itt Cannon Rf Products
4820-01-165-5889 INTERCHANGEABLE
Seat,valve
4820-01-166-537640103-50002-45 INTERCHANGEABLE
Valve,regulating,temperature
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-251-770440103-406 INTERCHANGEABLE
Valve,regulating,temperature
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
3920-01-260-743140103 INTERCHANGEABLE
Truck,hand
Gleason Corp
3030-01-271-5064 INTERCHANGEABLE
Belt,positive Drive
Cross-Reference Index
Part NumberManufacturer
40103 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
40103-901 PRIMARY Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
Related Parts
3110-00-156-8102INTERCHANGEABLE
BEARING,BALL,ANNULAR
SMN100K+COL
1420-00-446-5219INTERCHANGEABLE
INSERT,RETAINING
4010-3
1630-00-607-8447INTERCHANGEABLE
WHEEL,LANDING GEAR
9430273
5905-00-636-9263INTERCHANGEABLE
RESISTOR ASSEMBLY
5940-00-825-2624INTERCHANGEABLE
TERMINAL,FEEDTHRU
012-2007-479
4820-01-165-5889INTERCHANGEABLE
SEAT,VALVE
4820-01-166-5376INTERCHANGEABLE
VALVE,REGULATING,TEMPERATURE
40103-50002-45
4820-01-251-7704INTERCHANGEABLE
VALVE,REGULATING,TEMPERATURE
40103-406
3920-01-260-7431INTERCHANGEABLE
TRUCK,HAND
40103
3030-01-271-5064INTERCHANGEABLE
BELT,POSITIVE DRIVE
5360-01-283-3667INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
148-00
4820-01-319-2758INTERCHANGEABLE
VALVE,REGULATING,TEMPERATURE
40103-902

Frequently Asked Questions

What is NSN 4820-01-299-8463?

NSN 4820-01-299-8463 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 4820-01-299-8463?

NSN 4820-01-299-8463 has 2 cross-referenced part numbers: 40103 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40103-901 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).

What NSN replaces 4820-01-299-8463?

There are 12 known substitutes for 4820-01-299-8463: 3110-00-156-8102, 1420-00-446-5219, 1630-00-607-8447 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40103-901?

Key specifications for 40103-901: Bulb Diameter: 1.125 INCHES NOMINAL IN; Body Style: STRAIGHT THRU; Material: COPPER BULB; First End Style Designator: SOCKET W/BRAZING RING. 16 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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