PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C519Stem,fluid Valve

Hunt Valve Company, Inc. · NSN 4820-01-578-5046 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-578-5046 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-578-5046. Primary manufacturer part number: C519.
Features
  • Stem,fluid Valve — FSC 4820
  • Valve Size for Which Designed: 6.000 INCHES IN
  • Material Document and Classification: NI-CU ALLOY;QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE
  • Valve Model Number for Which Designed: NB0102E-6
  • Valve Type for Which Designed: GATE
  • 2 verified cross-references
  • Primary manufacturer: Hunt Valve Company, Inc.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Stem,fluid Valve, cataloged under National Stock Number 4820-01-578-5046, 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 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-578-5046
Primary Part NumberC519
Item NameStem,fluid Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHunt Valve Company, Inc.
StatusACTIVE
Valve Size for Which Designed6.000 INCHES IN
Material Document and ClassificationNI-CU ALLOY;QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE
Valve Model Number for Which DesignedNB0102E-6
Valve Type for Which DesignedGATE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5950-00-020-2942 INTERCHANGEABLE
Reactor
5640-00-103-22545640001032254 INTERCHANGEABLE
Tape,duct
National Industries for the Blind
5310-01-202-9948C5-1-9 INTERCHANGEABLE
Washer
Parker Hannifin Corp Dba Pneutronics
Cross-Reference Index
Part NumberManufacturer
NB0102E-6-6 Pima Valve, Llc (USA)
C519 PRIMARY Hunt Valve Company, Inc. (USA)
Related Parts
5950-00-020-2942INTERCHANGEABLE
REACTOR
5640-00-103-2254INTERCHANGEABLE
TAPE,DUCT
5640001032254
5310-01-202-9948INTERCHANGEABLE
WASHER
C5-1-9

Frequently Asked Questions

What is NSN 4820-01-578-5046?

NSN 4820-01-578-5046 is a Stem,fluid Valve, manufactured by Hunt Valve Company, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-578-5046?

NSN 4820-01-578-5046 has 2 cross-referenced part numbers: NB0102E-6-6 (Pima Valve, Llc), C519 (Hunt Valve Company, Inc.).

What NSN replaces 4820-01-578-5046?

There are 3 known substitutes for 4820-01-578-5046: 5950-00-020-2942, 5640-00-103-2254, 5310-01-202-9948. Verify interchangeability with system specifications before substitution.

What are the specifications of C519?

Key specifications for C519: Valve Size for Which Designed: 6.000 INCHES IN; Material Document and Classification: NI-CU ALLOY;QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE; End Item Identification: VALVE,GATE 6INCH;NEW CONSTRUCTION DDG102, 104, 106, 108, 109, 111, AND 112 IN; Part Name Assigned by Controlling Agency: STEM. 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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