PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8139Seat,valve

Tescom Corp Dba Tescom Div Tescom · NSN 4820-01-329-5682 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-329-5682 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-329-5682. Primary manufacturer part number: 8139.
Features
  • Seat,valve — FSC 4820
  • 1 verified cross-reference
  • Primary manufacturer: Tescom Corp Dba Tescom Div Tescom
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-329-5682, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Tescom Corp Dba Tescom Div Tescom. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-329-5682
Primary Part Number8139
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTescom Corp Dba Tescom Div Tescom
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
2530-00-106-55688139 INTERCHANGEABLE
Lock,axle
Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
4730-00-545-07840031120-030 INTERCHANGEABLE
Elbow,pipe
Cleveland Service Center
6125-00-734-61288139-1 INTERCHANGEABLE
Rotor Assy,motor-Ge
Kurz & Root Generator Company, Llc
5962-01-138-9819 INTERCHANGEABLE
Microcircuit,linear
5360-01-190-17908 139 INTERCHANGEABLE
Spring,helical,compression
Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
8030-01-218-4344 INTERCHANGEABLE
Potting Compound
5915-01-232-85785883578 INTERCHANGEABLE
Network,circuit Protection
Naval Sea Systems Command
7025-01-430-4999 INTERCHANGEABLE
Disk Drive Unit
5340-01-624-11728139 INTERCHANGEABLE
Fairlead Support
Teledyne Flir Unmanned Ground Systems, Inc
4820-01-634-0106 INTERCHANGEABLE
Seat,valve
Cross-Reference Index
Part NumberManufacturer
8139 PRIMARY Tescom Corp Dba Tescom Div Tescom (USA)
Related Parts
2530-00-106-5568INTERCHANGEABLE
LOCK,AXLE
8139
4730-00-545-0784INTERCHANGEABLE
ELBOW,PIPE
0031120-030
6125-00-734-6128INTERCHANGEABLE
ROTOR ASSY,MOTOR-GE
8139-1
5962-01-138-9819INTERCHANGEABLE
MICROCIRCUIT,LINEAR
5360-01-190-1790INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
8 139
8030-01-218-4344INTERCHANGEABLE
POTTING COMPOUND
5915-01-232-8578INTERCHANGEABLE
NETWORK,CIRCUIT PROTECTION
5883578
7025-01-430-4999INTERCHANGEABLE
DISK DRIVE UNIT
5340-01-624-1172INTERCHANGEABLE
FAIRLEAD SUPPORT
8139
4820-01-634-0106INTERCHANGEABLE
SEAT,VALVE

Frequently Asked Questions

What is NSN 4820-01-329-5682?

NSN 4820-01-329-5682 is a Seat,valve, manufactured by Tescom Corp Dba Tescom Div Tescom, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-329-5682?

NSN 4820-01-329-5682 has 1 cross-referenced part number: 8139 (Tescom Corp Dba Tescom Div Tescom).

What NSN replaces 4820-01-329-5682?

There are 10 known substitutes for 4820-01-329-5682: 2530-00-106-5568, 4730-00-545-0784, 6125-00-734-6128 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8139?

Key specifications for 8139: End Item Identification: 26-2900 SERIES BACK PRESSURE REGULATOR. 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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