PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

82851Piston,valve

General Regulator Corp. Dba Accudriv · NSN 4820-01-189-4681 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-189-4681 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-189-4681. Primary manufacturer part number: 82851.
Features
  • Piston,valve — FSC 4820
  • Valve Design Control Activity: 24658
  • Valve Model Number for Which Designed: MODEL 10287
  • Material: ALUMINUM ALLOY
  • Valve Type for Which Designed: PRESSURE REDUCING
  • 4 verified cross-references
  • Primary manufacturer: General Regulator Corp. Dba Accudriv
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Aluminum Alloy construction
General Description

The Piston,valve, cataloged under National Stock Number 4820-01-189-4681, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is General Regulator Corp. Dba Accudriv. Government technical data includes 4 verified specifications, 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
NSN4820-01-189-4681
Primary Part Number82851
Item NamePiston,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerGeneral Regulator Corp. Dba Accudriv
StatusACTIVE
Valve Design Control Activity24658
Valve Model Number for Which DesignedMODEL 10287
MaterialALUMINUM ALLOY
Valve Type for Which DesignedPRESSURE REDUCING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3010-00-061-83161371D23 INTERCHANGEABLE
Universal Joint,nonvehicular
Triumph Gear Systems Inc Dba Triumph Gear Systems Inc
3110-00-144-86680042847-4 INTERCHANGEABLE
Bearing,ball,annular
New Holland Construction
3110-00-277-0032MU5206TM/W103 INTERCHANGEABLE
Bearing,roller,cylindrical
Rexnord Industries, Llc Dba Link-Belt Products Div Bearing Operation
5355-00-307-13551028-1 INTERCHANGEABLE
Knob
Drs Signal Solutions, Inc.
5365-00-990-408910281 INTERCHANGEABLE
Shim Set
L3harris Interstate Electronics Corporation
4730-01-045-942110281 INTERCHANGEABLE
Elbow,pipe to Tube
Clayton Manufacturing Company
5130-01-127-980882851 INTERCHANGEABLE
Roller,lever Spindl
Huck International, Inc. Div Kingston Operations
5360-01-163-04611028-1 INTERCHANGEABLE
Spring,helical,extension
Saf-Holland, Inc.
5998-01-264-40831028-1 INTERCHANGEABLE
Circuit Card Assembly
The Boeing Company
5905-01-435-234282851 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Ge Aviation Systems Llc Dba Ge Aviation
Cross-Reference Index
Part NumberManufacturer
82851 General Regulator Corp. Dba Accudriv (USA)
10287 PIECE 16 General Regulator Corp. Dba Accudriv (USA)
10281 General Regulator Corp. Dba Accudriv (USA)
82851-01 General Regulator Corp. Dba Accudriv (USA)
Related Parts
3010-00-061-8316INTERCHANGEABLE
UNIVERSAL JOINT,NONVEHICULAR
1371D23
3110-00-144-8668INTERCHANGEABLE
BEARING,BALL,ANNULAR
0042847-4
3110-00-277-0032INTERCHANGEABLE
BEARING,ROLLER,CYLINDRICAL
MU5206TM/W103
5355-00-307-1355INTERCHANGEABLE
KNOB
1028-1
5365-00-990-4089INTERCHANGEABLE
SHIM SET
10281
4730-01-045-9421INTERCHANGEABLE
ELBOW,PIPE TO TUBE
10281
5130-01-127-9808INTERCHANGEABLE
ROLLER,LEVER SPINDL
82851
5360-01-163-0461INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
1028-1
5998-01-264-4083INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
1028-1
5905-01-435-2342INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
82851
5998-01-466-4992INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
FX0N-8EYR-ES
2530-01-471-1426INTERCHANGEABLE
ROTOR,DISC BRAKE
8285-1

Frequently Asked Questions

What is NSN 4820-01-189-4681?

NSN 4820-01-189-4681 is a Piston,valve, manufactured by General Regulator Corp. Dba Accudriv, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-189-4681?

NSN 4820-01-189-4681 has 4 cross-referenced part numbers: 82851 (General Regulator Corp. Dba Accudriv), 10287 PIECE 16 (General Regulator Corp. Dba Accudriv), 10281 (General Regulator Corp. Dba Accudriv), 82851-01 (General Regulator Corp. Dba Accudriv).

What NSN replaces 4820-01-189-4681?

There are 12 known substitutes for 4820-01-189-4681: 3010-00-061-8316, 3110-00-144-8668, 3110-00-277-0032 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 82851?

Key specifications for 82851: Valve Design Control Activity: 24658; Valve Model Number for Which Designed: MODEL 10287; Material: ALUMINUM ALLOY; Valve Type for Which Designed: PRESSURE REDUCING. 4 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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