PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C1929DStem,fluid Valve

Griswold Industries Dba Cla-Val Co · NSN 4820-01-149-3817 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-149-3817 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-149-3817. Primary manufacturer part number: C1929D.
Features
  • Stem,fluid Valve — FSC 4820
  • Largest Outside Diameter: 0.879 INCHES NOMINAL IN
  • Material: NICKEL ALLOY
  • 2 verified cross-references
  • Primary manufacturer: Griswold Industries Dba Cla-Val Co
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy construction
General Description

The Stem,fluid Valve, cataloged under National Stock Number 4820-01-149-3817, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Griswold Industries Dba Cla-Val Co. Government technical data includes 2 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-149-3817
Primary Part NumberC1929D
Item NameStem,fluid Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerGriswold Industries Dba Cla-Val Co
StatusACTIVE
Largest Outside Diameter0.879 INCHES NOMINAL IN
MaterialNICKEL ALLOY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4820-01-228-4949 INTERCHANGEABLE
Ball,valve,ported
5360-01-228-5072 INTERCHANGEABLE
Spring,helical,compression
4820-01-233-4264 INTERCHANGEABLE
Valve,lift-Check
Cross-Reference Index
Part NumberManufacturer
C1929D PRIMARY Griswold Industries Dba Cla-Val Co (USA)
C1929 Griswold Industries Dba Cla-Val Co (USA)
Related Parts
4820-01-228-4949INTERCHANGEABLE
BALL,VALVE,PORTED
5360-01-228-5072INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
4820-01-233-4264INTERCHANGEABLE
VALVE,LIFT-CHECK

Frequently Asked Questions

What is NSN 4820-01-149-3817?

NSN 4820-01-149-3817 is a Stem,fluid Valve, manufactured by Griswold Industries Dba Cla-Val Co, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-149-3817?

NSN 4820-01-149-3817 has 2 cross-referenced part numbers: C1929D (Griswold Industries Dba Cla-Val Co), C1929 (Griswold Industries Dba Cla-Val Co).

What NSN replaces 4820-01-149-3817?

There are 3 known substitutes for 4820-01-149-3817: 4820-01-228-4949, 5360-01-228-5072, 4820-01-233-4264. Verify interchangeability with system specifications before substitution.

What are the specifications of C1929D?

Key specifications for C1929D: Overall Length: 8.250 INCHES NOMINAL IN; Largest Outside Diameter: 0.879 INCHES NOMINAL IN; Material: NICKEL ALLOY. 3 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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