PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1-1/2IN4446TBW4 PIECE 4Stem,fluid Valve

Worcester Controls Corp P O Box 2609 Cookeville Tn 385022609 · NSN 4820-01-439-2422 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-439-2422 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-439-2422. Primary manufacturer part number: 1-1/2IN4446TBW4 PIECE 4.
Features
  • Stem,fluid Valve — FSC 4820
  • Stem Actuating End Type: ROUNDED
  • Valve Model Number for Which Designed: 4446TBW4
  • Valve Size for Which Designed: 1.500 INCHES IN
  • Material: STEEL COMP 316
  • Valve Type for Which Designed: BALL
  • 2 verified cross-references
  • Primary manufacturer: Worcester Controls Corp P O Box 2609 Cookeville Tn 385022609
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Comp 316 construction
General Description

The Stem,fluid Valve, cataloged under National Stock Number 4820-01-439-2422, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Worcester Controls Corp P O Box 2609 Cookeville Tn 385022609. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-439-2422
Primary Part Number1-1/2IN4446TBW4 PIECE 4
Item NameStem,fluid Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerWorcester Controls Corp P O Box 2609 Cookeville Tn 385022609
StatusACTIVE
Stem Actuating End TypeROUNDED
Valve Model Number for Which Designed4446TBW4
Valve Size for Which Designed1.500 INCHES IN
MaterialSTEEL COMP 316
Valve Type for Which DesignedBALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5325-00-052-36219307 INTERCHANGEABLE
Grommet,nonmetallic
Northrop Grumman Systems Corporation
5330-00-178-3100 INTERCHANGEABLE
Seal,plain Encased
5930-00-538-1745J40-260 INTERCHANGEABLE
Switch,pressure
United Electric Controls Company
5910-01-131-4457 INTERCHANGEABLE
Capacitor,variable,ceramic Diele
4820-01-131-939109615B02S0025 INTERCHANGEABLE
Valve,safety Relief
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
6660-01-168-69569613 INTERCHANGEABLE
Roller Assembly,recorder Instrum
Belfort Instrument Company
6145-01-581-85009613 INTERCHANGEABLE
Cable,special Purpose,electrical
Belden Wire and Cable Co Wire and Cable Office
Cross-Reference Index
Part NumberManufacturer
1-1/2IN4446TBW4 PIECE 4 Worcester Controls Corp P O Box 2609 Cookeville Tn 385022609 (USA)
9613 Worcester Controls Corp P O Box 2609 Cookeville Tn 385022609 (USA)
Related Parts
5325-00-052-3621INTERCHANGEABLE
GROMMET,NONMETALLIC
9307
5330-00-178-3100INTERCHANGEABLE
SEAL,PLAIN ENCASED
5930-00-538-1745INTERCHANGEABLE
SWITCH,PRESSURE
J40-260
5910-01-131-4457INTERCHANGEABLE
CAPACITOR,VARIABLE,CERAMIC DIELE
4820-01-131-9391INTERCHANGEABLE
VALVE,SAFETY RELIEF
09615B02S0025
6660-01-168-6956INTERCHANGEABLE
ROLLER ASSEMBLY,RECORDER INSTRUM
9613
6145-01-581-8500INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
9613

Frequently Asked Questions

What is NSN 4820-01-439-2422?

NSN 4820-01-439-2422 is a Stem,fluid Valve, manufactured by Worcester Controls Corp P O Box 2609 Cookeville Tn 385022609, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-439-2422?

NSN 4820-01-439-2422 has 2 cross-referenced part numbers: 1-1/2IN4446TBW4 PIECE 4 (Worcester Controls Corp P O Box 2609 Cookeville Tn 385022609), 9613 (Worcester Controls Corp P O Box 2609 Cookeville Tn 385022609).

What NSN replaces 4820-01-439-2422?

There are 7 known substitutes for 4820-01-439-2422: 5325-00-052-3621, 5330-00-178-3100, 5930-00-538-1745 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1-1/2IN4446TBW4 PIECE 4?

Key specifications for 1-1/2IN4446TBW4 PIECE 4: Stem Actuating End Type: ROUNDED; Valve Model Number for Which Designed: 4446TBW4; Valve Size for Which Designed: 1.500 INCHES IN; Material: STEEL COMP 316. 6 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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