PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

447-00Seat,valve

Trac Regulator Co., Inc. Dba Trac Regulator Co Inc · NSN 4820-01-199-7920 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-199-7920 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-199-7920. Primary manufacturer part number: 447-00.
Features
  • Seat,valve — FSC 4820
  • Material: COPPER ALLOY OVERALL
  • 4 verified cross-references
  • Primary manufacturer: Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-199-7920, 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 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 4 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
NSN4820-01-199-7920
Primary Part Number447-00
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTrac Regulator Co., Inc. Dba Trac Regulator Co Inc
StatusACTIVE
MaterialCOPPER ALLOY OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5825-00-014-237444700 INTERCHANGEABLE
Electronic,subassy
L3harris Technologies, Inc. Div Space and Airborne Systems
5330-00-296-289840273 INTERCHANGEABLE
Seal
Parker-Hannifin Corporation Div Engineered Polymer Systems Division (eps)
5940-00-913-80671151-16-0519 INTERCHANGEABLE
Terminal,stud
Concord Electronics, Inc.
4820-01-065-1769250040-068 INTERCHANGEABLE
Parts Kit,valve
Sullair Corp
4820-01-114-7143 INTERCHANGEABLE
Bellows Assembly,valve
4820-01-114-7144 INTERCHANGEABLE
Cap,valve
6320-01-140-702540-273 INTERCHANGEABLE
Panel,indicating and Control
L3 Technologies, Inc.
4820-01-199-656840273-001 INTERCHANGEABLE
Valve,regulating,temperature
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
3040-01-199-665040273 PIECE 35 INTERCHANGEABLE
Guide,piston,liner
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
3040-01-199-6718444-00 INTERCHANGEABLE
Piston,linear Actuating Cylinder
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Cross-Reference Index
Part NumberManufacturer
40273 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
447 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
40273 PIECE 17 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
447-00 PRIMARY Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
Related Parts
5825-00-014-2374INTERCHANGEABLE
ELECTRONIC,SUBASSY
44700
5330-00-296-2898INTERCHANGEABLE
SEAL
40273
5940-00-913-8067INTERCHANGEABLE
TERMINAL,STUD
1151-16-0519
4820-01-065-1769INTERCHANGEABLE
PARTS KIT,VALVE
250040-068
4820-01-114-7143INTERCHANGEABLE
BELLOWS ASSEMBLY,VALVE
4820-01-114-7144INTERCHANGEABLE
CAP,VALVE
6320-01-140-7025INTERCHANGEABLE
PANEL,INDICATING AND CONTROL
40-273
4820-01-199-6568INTERCHANGEABLE
VALVE,REGULATING,TEMPERATURE
40273-001
3040-01-199-6650INTERCHANGEABLE
GUIDE,PISTON,LINER
40273 PIECE 35
3040-01-199-6718INTERCHANGEABLE
PISTON,LINEAR ACTUATING CYLINDER
444-00
5950-01-242-8887INTERCHANGEABLE
COIL,ELECTRICAL
4730-01-366-9402INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
44700

Frequently Asked Questions

What is NSN 4820-01-199-7920?

NSN 4820-01-199-7920 is a Seat,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 4820-01-199-7920?

NSN 4820-01-199-7920 has 4 cross-referenced part numbers: 40273 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 447 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40273 PIECE 17 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 447-00 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).

What NSN replaces 4820-01-199-7920?

There are 12 known substitutes for 4820-01-199-7920: 5825-00-014-2374, 5330-00-296-2898, 5940-00-913-8067 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 447-00?

Key specifications for 447-00: Material: COPPER ALLOY OVERALL. 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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