PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

305-4ADisk,valve

Magnatrol Valve Corp Div Clark-Cooper · NSN 4820-00-180-5444 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-180-5444 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-180-5444. Primary manufacturer part number: 305-4A.
Features
  • Disk,valve — FSC 4820
  • 3 verified cross-references
  • Primary manufacturer: Magnatrol Valve Corp Div Clark-Cooper
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Disk,valve, cataloged under National Stock Number 4820-00-180-5444, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Magnatrol Valve Corp Div Clark-Cooper. This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameDisk,valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersMagnatrol Valve Corp Div Clark-Cooper (CAGE 14561)
Technical Specifications
ParameterValue
NSN4820-00-180-5444
Primary Part Number305-4A
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMagnatrol Valve Corp Div Clark-Cooper
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4320-00-473-30693054-A INTERCHANGEABLE
Ring,lantern
Naval Inventory Control Point Mechanicsburg
9390-00-550-6702BAC1521-267 INTERCHANGEABLE
Nonmetallic Special Shaped Secti
The Boeing Company Div Defense
9320-01-020-3544BMS 1-11 INTERCHANGEABLE
Rubber Sheet,solid
The Boeing Company Div Defense
9320-01-075-5559N-149 INTERCHANGEABLE
Rubber Sheet,solid
Meggitt Oregon Inc Dba Meggitt Oregon Inc Div Meggitt Polymers & Composites
4920-01-146-2129TMS-001 INTERCHANGEABLE
Automatic Data Acquisition and C
Amentum Environment & Energy, Inc.
Cross-Reference Index
Part NumberManufacturer
171G7 Magnatrol Valve Corp Div Clark-Cooper (USA)
305.4A Magnatrol Valve Corp Div Clark-Cooper (USA)
305-4A PRIMARY Magnatrol Valve Corp Div Clark-Cooper (USA)
Related Parts
4320-00-473-3069INTERCHANGEABLE
RING,LANTERN
3054-A
9390-00-550-6702INTERCHANGEABLE
NONMETALLIC SPECIAL SHAPED SECTI
BAC1521-267
9320-01-020-3544INTERCHANGEABLE
RUBBER SHEET,SOLID
BMS 1-11
9320-01-075-5559INTERCHANGEABLE
RUBBER SHEET,SOLID
N-149
4920-01-146-2129INTERCHANGEABLE
AUTOMATIC DATA ACQUISITION AND C
TMS-001

Frequently Asked Questions

What is NSN 4820-00-180-5444?

NSN 4820-00-180-5444 is a Disk,valve, manufactured by Magnatrol Valve Corp Div Clark-Cooper, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-180-5444?

NSN 4820-00-180-5444 has 3 cross-referenced part numbers: 171G7 (Magnatrol Valve Corp Div Clark-Cooper), 305.4A (Magnatrol Valve Corp Div Clark-Cooper), 305-4A (Magnatrol Valve Corp Div Clark-Cooper).

What NSN replaces 4820-00-180-5444?

There are 5 known substitutes for 4820-00-180-5444: 4320-00-473-3069, 9390-00-550-6702, 9320-01-020-3544 and 2 more. Verify interchangeability with system specifications before substitution.

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