PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A9-7943-020-209Stem,fluid Valve

Velan Valve Corp. · NSN 4820-01-209-2906 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-209-2906 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-209-2906. Primary manufacturer part number: A9-7943-020-209.
Features
  • Stem,fluid Valve — FSC 4820
  • Material Document and Classification: ASTM A479 ASSN STD SINGLE MATERIAL RESPONSE
  • Features Provided: INTEGRAL DISK
  • Material: STEEL COMP 410
  • Stem Actuating End Type: THREADED EXTERNALLY
  • 5 verified cross-references
  • Primary manufacturer: Velan Valve Corp.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Comp 410 construction
General Description

The Stem,fluid Valve, cataloged under National Stock Number 4820-01-209-2906, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Velan Valve Corp.. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-209-2906
Primary Part NumberA9-7943-020-209
Item NameStem,fluid Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerVelan Valve Corp.
StatusACTIVE
Material Document and ClassificationASTM A479 ASSN STD SINGLE MATERIAL RESPONSE
Features ProvidedINTEGRAL DISK
MaterialSTEEL COMP 410
Stem Actuating End TypeTHREADED EXTERNALLY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5305-00-003-9471 INTERCHANGEABLE
Screw
5840-01-007-299178316 INTERCHANGEABLE
Pointer,modified
L3harris Technologies, Inc Div Space & Airborne Systems
4820-01-049-4167B09-307PS-05TS INTERCHANGEABLE
Valve,globe
Velan Valve Corp.
4820-01-192-61037943-019-069 INTERCHANGEABLE
Disk,valve
Velan Valve Corp.
4820-01-200-311678316 INTERCHANGEABLE
Valve,stop-Check
Velan Valve Corp.
6680-01-278-2369XM-55050-79-1500-O-L-30 INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
4720-01-358-03824176Y-2X12 INTERCHANGEABLE
Hose,nonmetallic
Gates Corporation
Cross-Reference Index
Part NumberManufacturer
A9-7943-20-148 Velan Valve Corp. (USA)
78316 ITEM 5 AND 14 REV L Velan Valve Corp. (USA)
A9-7943-20-069 Velan Valve Corp. (USA)
A9-7943-020-209 PRIMARY Velan Valve Corp. (USA)
78316 Velan Valve Corp. (USA)
Related Parts
5305-00-003-9471INTERCHANGEABLE
SCREW
5840-01-007-2991INTERCHANGEABLE
POINTER,MODIFIED
78316
4820-01-049-4167INTERCHANGEABLE
VALVE,GLOBE
B09-307PS-05TS
4820-01-192-6103INTERCHANGEABLE
DISK,VALVE
7943-019-069
4820-01-200-3116INTERCHANGEABLE
VALVE,STOP-CHECK
78316
6680-01-278-2369INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
XM-55050-79-1500-O-L-30
4720-01-358-0382INTERCHANGEABLE
HOSE,NONMETALLIC
4176Y-2X12

Frequently Asked Questions

What is NSN 4820-01-209-2906?

NSN 4820-01-209-2906 is a Stem,fluid Valve, manufactured by Velan Valve Corp., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-209-2906?

NSN 4820-01-209-2906 has 5 cross-referenced part numbers: A9-7943-20-148 (Velan Valve Corp.), 78316 ITEM 5 AND 14 REV L (Velan Valve Corp.), A9-7943-20-069 (Velan Valve Corp.), A9-7943-020-209 (Velan Valve Corp.), 78316 (Velan Valve Corp.).

What NSN replaces 4820-01-209-2906?

There are 7 known substitutes for 4820-01-209-2906: 5305-00-003-9471, 5840-01-007-2991, 4820-01-049-4167 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A9-7943-020-209?

Key specifications for A9-7943-020-209: Material Document and Classification: ASTM A479 ASSN STD SINGLE MATERIAL RESPONSE; Features Provided: INTEGRAL DISK; Material: STEEL COMP 410; Stem Actuating End Type: THREADED EXTERNALLY. 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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