PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

30549 PIECE 6Inner Valve Assembly

General Regulator Corp. Dba Accudriv · NSN 4820-01-185-6721 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-185-6721 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-185-6721. Primary manufacturer part number: 30549 PIECE 6.
Features
  • Inner Valve Assembly — FSC 4820
  • General Characteristics Item Description: BRASS
  • 6 verified cross-references
  • Primary manufacturer: General Regulator Corp. Dba Accudriv
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Inner Valve Assembly, cataloged under National Stock Number 4820-01-185-6721, 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 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 2 manufacturers, 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
NSN4820-01-185-6721
Primary Part Number30549 PIECE 6
Item NameInner Valve Assembly
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerGeneral Regulator Corp. Dba Accudriv
StatusACTIVE
General Characteristics Item DescriptionBRASS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-01-118-84841E4567 INTERCHANGEABLE
Inner Valve
Fisher Controls Co Inc
5330-01-130-6589 INTERCHANGEABLE
Felt,mechanical,preformed
4820-01-185-6722 INTERCHANGEABLE
Plug,bottom,valve
4820-01-185-6723 INTERCHANGEABLE
Adjusting Screw,valve
4820-01-185-6724 INTERCHANGEABLE
Screen,vent,valve
4820-01-185-6744 INTERCHANGEABLE
Stem,fluid Valve
4820-01-185-6769 INTERCHANGEABLE
Guide,valve Stem
4820-01-191-2684 INTERCHANGEABLE
Chamber,reset
4820-01-191-2685 INTERCHANGEABLE
Plate,retaining
4820-01-202-0442 INTERCHANGEABLE
Cap,valve
Cross-Reference Index
Part NumberManufacturer
30549 PIECE 6 General Regulator Corp. Dba Accudriv (USA)
30549 General Regulator Corp. Dba Accudriv (USA)
30549 PC35 General Regulator Corp. Dba Accudriv (USA)
H5320308B-19-20 Elsag Bailey Inc (USA)
1E4567 General Regulator Corp. Dba Accudriv (USA)
X-85966-00 General Regulator Corp. Dba Accudriv (USA)
Related Parts
4820-01-118-8484INTERCHANGEABLE
INNER VALVE
1E4567
5330-01-130-6589INTERCHANGEABLE
FELT,MECHANICAL,PREFORMED
4820-01-185-6722INTERCHANGEABLE
PLUG,BOTTOM,VALVE
4820-01-185-6723INTERCHANGEABLE
ADJUSTING SCREW,VALVE
4820-01-185-6724INTERCHANGEABLE
SCREEN,VENT,VALVE
4820-01-185-6744INTERCHANGEABLE
STEM,FLUID VALVE
4820-01-185-6769INTERCHANGEABLE
GUIDE,VALVE STEM
4820-01-191-2684INTERCHANGEABLE
CHAMBER,RESET
4820-01-191-2685INTERCHANGEABLE
PLATE,RETAINING
4820-01-202-0442INTERCHANGEABLE
CAP,VALVE
4820-01-230-3697INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
167DA-85/CB
5905-01-298-6421INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
30549

Frequently Asked Questions

What is NSN 4820-01-185-6721?

NSN 4820-01-185-6721 is a Inner Valve Assembly, manufactured by General Regulator Corp. Dba Accudriv, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-185-6721?

NSN 4820-01-185-6721 has 6 cross-referenced part numbers: 30549 PIECE 6 (General Regulator Corp. Dba Accudriv), 30549 (General Regulator Corp. Dba Accudriv), 30549 PC35 (General Regulator Corp. Dba Accudriv), H5320308B-19-20 (Elsag Bailey Inc), 1E4567 (General Regulator Corp. Dba Accudriv) and 1 more.

What NSN replaces 4820-01-185-6721?

There are 12 known substitutes for 4820-01-185-6721: 4820-01-118-8484, 5330-01-130-6589, 4820-01-185-6722 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 30549 PIECE 6?

Key specifications for 30549 PIECE 6: General Characteristics Item Description: BRASS. 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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