PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40397-902Valve,regulating,fluid Pressure

Trac Regulator Co., Inc. Dba Trac Regulator Co Inc · NSN 4820-01-220-2704 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-220-2704 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-220-2704. Primary manufacturer part number: 40397-902.
Features
  • Valve,regulating,fluid Pressure — FSC 4820
  • Second End Relationship with First End: IDENTICAL
  • First End Nominal Pipe Size Accommodated: 0.500 INCHES IN
  • Valve Loading Method: SPRING
  • Material: NICKEL ALLOY STEM
  • Material: NICKEL ALLOY FLOW CONTROL DEVICE
  • Body Style: STRAIGHT THRU
  • Regulation Type: AUTOMATIC SINGLE STAGE
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy Stem construction
General Description

The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-220-2704, 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 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 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: Cancelled.

Technical Specifications
ParameterValue
NSN4820-01-220-2704
Primary Part Number40397-902
Item NameValve,regulating,fluid Pressure
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTrac Regulator Co., Inc. Dba Trac Regulator Co Inc
StatusCANCELLED
Second End Relationship with First EndIDENTICAL
First End Nominal Pipe Size Accommodated0.500 INCHES IN
Valve Loading MethodSPRING
MaterialNICKEL ALLOY STEM
MaterialNICKEL ALLOY FLOW CONTROL DEVICE
Body StyleSTRAIGHT THRU
Regulation TypeAUTOMATIC SINGLE STAGE
End Connection Quantity2
First End Connection TypeUNTHREADED INTERNAL PIPE
Maximum Inlet Pressure RatingERR-060
Flow Control DeviceDISK
First End Style DesignatorSOCKET W/BRAZING RING
Outlet Pressure Range25.0 TO 60.0 CAMERA MOUNT
FilterNOT INCLUDED
Media for Which DesignedWATER, SALT
MaterialNICKEL ALLOY AND COPPER ALLOY SEAT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
4820-01-168-2161931-00 INTERCHANGEABLE
Disk,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-242-8144 INTERCHANGEABLE
Stem,fluid Valve
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 25T6OPSI Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
40397-09 5TO60PSI Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
40397-09 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
40397-902 PRIMARY Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
40397-09 25T60P Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
40397-09 5T30PSI Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
Related Parts
4820-01-168-2161INTERCHANGEABLE
DISK,VALVE
931-00
4820-01-242-8144INTERCHANGEABLE
STEM,FLUID VALVE
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 4820-01-220-2704?

NSN 4820-01-220-2704 is a Valve,regulating,fluid Pressure, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-01-220-2704?

NSN 4820-01-220-2704 has 6 cross-referenced part numbers: 40397-09 25T6OPSI (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40397-09 5TO60PSI (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40397-09 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40397-902 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40397-09 25T60P (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc) and 1 more.

What NSN replaces 4820-01-220-2704?

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

What are the specifications of 40397-902?

Key specifications for 40397-902: Second End Relationship with First End: IDENTICAL; First End Nominal Pipe Size Accommodated: 0.500 INCHES IN; Valve Loading Method: SPRING; Material: NICKEL ALLOY STEM. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-01-220-2704 still in active supply?

NSN 4820-01-220-2704 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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