PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

19763AStem,fluid Valve

Flowserve Inc · NSN 4820-00-479-8835 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-479-8835 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-479-8835. Primary manufacturer part number: 19763A.
Features
  • Stem,fluid Valve — FSC 4820
  • Largest Outside Diameter: 0.500 INCHES NOMINAL IN
  • 2 verified cross-references
  • Primary manufacturer: Flowserve Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Stem,fluid Valve, cataloged under National Stock Number 4820-00-479-8835, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Flowserve Inc. Government technical data includes 1 verified specification, 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-479-8835
Primary Part Number19763A
Item NameStem,fluid Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerFlowserve Inc
StatusACTIVE
Largest Outside Diameter0.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5330-00-387-708019763A INTERCHANGEABLE
Gasket
Brinkley Technology Group Llc Dba Hercules Manufacturing
Cross-Reference Index
Part NumberManufacturer
E-40506 Flowserve Inc (USA)
19763A PRIMARY Flowserve Inc (USA)
Related Parts
5330-00-387-7080INTERCHANGEABLE
GASKET
19763A

Frequently Asked Questions

What is NSN 4820-00-479-8835?

NSN 4820-00-479-8835 is a Stem,fluid Valve, manufactured by Flowserve Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-479-8835?

NSN 4820-00-479-8835 has 2 cross-referenced part numbers: E-40506 (Flowserve Inc), 19763A (Flowserve Inc).

What NSN replaces 4820-00-479-8835?

There is 1 known substitute for 4820-00-479-8835: 5330-00-387-7080. Verify interchangeability with system specifications before substitution.

What are the specifications of 19763A?

Key specifications for 19763A: Largest Outside Diameter: 0.500 INCHES NOMINAL IN; Overall Length: 6.750 INCHES NOMINAL IN. 2 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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