PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B2579Disk,valve

Hunt Valve Company, Inc. · NSN 4820-01-100-1946 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-100-1946 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-100-1946. Primary manufacturer part number: B2579.
Features
  • Disk,valve — FSC 4820
  • Media for Which Designed: OIL OR WATER
  • Pressure Rating: 285.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
  • Style Designator: SOLID WEDGE
  • Material: STEEL
  • Temp Rating: 775.0 FAHRENHEIT NOMINAL DEGF
  • 5 verified cross-references
  • Primary manufacturer: Hunt Valve Company, Inc.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-100-1946, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Hunt Valve Company, Inc.. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 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
NSN4820-01-100-1946
Primary Part NumberB2579
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHunt Valve Company, Inc.
StatusACTIVE
Media for Which DesignedOIL OR WATER
Pressure Rating285.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
Style DesignatorSOLID WEDGE
MaterialSTEEL
Temp Rating775.0 FAHRENHEIT NOMINAL DEGF
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4470-00-889-2455 INTERCHANGEABLE
Disk,valve
5315-01-049-4267D2334 PC41 1IN INTERCHANGEABLE
Pin,valve Disk
Hunt Valve Company, Inc.
4820-01-050-3558B2545 INTERCHANGEABLE
Stem,fluid Valve
Hunt Valve Company, Inc.
4820-01-071-8810 INTERCHANGEABLE
Valve,gate
4820-01-088-0897C4759B INTERCHANGEABLE
Seat,valve
Griswold Industries Dba Cla-Val Co
4820-01-098-9722 INTERCHANGEABLE
Disk,valve
4820-01-099-1797 INTERCHANGEABLE
Stem,fluid Valve
4820-01-099-6164B2575 INTERCHANGEABLE
Stem,fluid Valve
Hunt Valve Company, Inc.
4820-01-102-9017C2328PJ INTERCHANGEABLE
Cap,valve
Hunt Valve Company, Inc.
4820-01-102-9018D2334 PIECE 25 1 IN. INTERCHANGEABLE
Follower,gate Valve
Hunt Valve Company, Inc.
Cross-Reference Index
Part NumberManufacturer
B2579 P J Valves Inc (USA)
D2334 P J Valves Inc (USA)
D2334 PIECE 40 1 1/2IN P J Valves Inc (USA)
C4759 P J Valves Inc (USA)
B2579 PRIMARY Hunt Valve Company, Inc. (USA)
Related Parts
4470-00-889-2455INTERCHANGEABLE
DISK,VALVE
5315-01-049-4267INTERCHANGEABLE
PIN,VALVE DISK
D2334 PC41 1IN
4820-01-050-3558INTERCHANGEABLE
STEM,FLUID VALVE
B2545
4820-01-071-8810INTERCHANGEABLE
VALVE,GATE
4820-01-088-0897INTERCHANGEABLE
SEAT,VALVE
C4759B
4820-01-098-9722INTERCHANGEABLE
DISK,VALVE
4820-01-099-1797INTERCHANGEABLE
STEM,FLUID VALVE
4820-01-099-6164INTERCHANGEABLE
STEM,FLUID VALVE
B2575
4820-01-102-9017INTERCHANGEABLE
CAP,VALVE
C2328PJ
4820-01-102-9018INTERCHANGEABLE
FOLLOWER,GATE VALVE
D2334 PIECE 25 1 IN.
4820-01-103-0133INTERCHANGEABLE
CAP,VALVE
C2543PJ
4820-01-344-9438INTERCHANGEABLE
DISK,VALVE

Frequently Asked Questions

What is NSN 4820-01-100-1946?

NSN 4820-01-100-1946 is a Disk,valve, manufactured by Hunt Valve Company, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-100-1946?

NSN 4820-01-100-1946 has 5 cross-referenced part numbers: B2579 (P J Valves Inc), D2334 (P J Valves Inc), D2334 PIECE 40 1 1/2IN (P J Valves Inc), C4759 (P J Valves Inc), B2579 (Hunt Valve Company, Inc.).

What NSN replaces 4820-01-100-1946?

There are 12 known substitutes for 4820-01-100-1946: 4470-00-889-2455, 5315-01-049-4267, 4820-01-050-3558 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B2579?

Key specifications for B2579: Media for Which Designed: OIL OR WATER; Pressure Rating: 285.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Style Designator: SOLID WEDGE; Material: STEEL. 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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