PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

28531Disk,valve

Forenta Lp · NSN 4820-01-259-0366 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-259-0366 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-259-0366. Primary manufacturer part number: 28531.
Features
  • Disk,valve — FSC 4820
  • Media for Which Designed: STEAM
  • Pressure Rating: 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
  • Material: PLASTIC POLYTETRAFLUOROETHYLENE
  • 5 verified cross-references
  • Primary manufacturer: Forenta Lp
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Plastic Polytetrafluoroethylene construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-259-0366, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Forenta Lp. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-259-0366
Primary Part Number28531
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerForenta Lp
StatusACTIVE
Media for Which DesignedSTEAM
Pressure Rating200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
MaterialPLASTIC POLYTETRAFLUOROETHYLENE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3455-00-021-2414 INTERCHANGEABLE
File,rotary
8145-00-371-1696P124 INTERCHANGEABLE
Shipping and Storage Container,p
Naval Inventory Control Point
5999-01-182-1782269911 INTERCHANGEABLE
Plate,electrical Shield
Raytheon Company Dba Raytheon Co
4820-01-259-0346 INTERCHANGEABLE
Valve,globe
4820-01-259-0357 INTERCHANGEABLE
Stem,fluid Valve
Cross-Reference Index
Part NumberManufacturer
28531 Forenta Lp (USA)
26991-1 The Central Brass Manufacturing Company (USA)
24-T United Brass Works, Inc. Dba United Brass Works (USA)
26991-1 United Brass Works, Inc. Dba United Brass Works (USA)
28531 PC26991-1 Forenta Lp (USA)
Related Parts
3455-00-021-2414INTERCHANGEABLE
FILE,ROTARY
8145-00-371-1696INTERCHANGEABLE
SHIPPING AND STORAGE CONTAINER,P
P124
5999-01-182-1782INTERCHANGEABLE
PLATE,ELECTRICAL SHIELD
269911
4820-01-259-0346INTERCHANGEABLE
VALVE,GLOBE
4820-01-259-0357INTERCHANGEABLE
STEM,FLUID VALVE

Frequently Asked Questions

What is NSN 4820-01-259-0366?

NSN 4820-01-259-0366 is a Disk,valve, manufactured by Forenta Lp, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-259-0366?

NSN 4820-01-259-0366 has 5 cross-referenced part numbers: 28531 (Forenta Lp), 26991-1 (The Central Brass Manufacturing Company), 24-T (United Brass Works, Inc. Dba United Brass Works), 26991-1 (United Brass Works, Inc. Dba United Brass Works), 28531 PC26991-1 (Forenta Lp).

What NSN replaces 4820-01-259-0366?

There are 5 known substitutes for 4820-01-259-0366: 3455-00-021-2414, 8145-00-371-1696, 5999-01-182-1782 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 28531?

Key specifications for 28531: Media for Which Designed: STEAM; Pressure Rating: 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS; Material: PLASTIC POLYTETRAFLUOROETHYLENE; Special Features: 1/4INCH STEAM GLOBE VALVE IN. 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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