PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8350-15 ITEM 8Stem,fluid Valve

Velan Valve Corp. · NSN 4820-01-253-3566 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-253-3566 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-253-3566. Primary manufacturer part number: 8350-15 ITEM 8.
Features
  • Stem,fluid Valve — FSC 4820
  • Valve Type for Which Designed: GATE
  • Material: STEEL COMP 410
  • Valve Size for Which Designed: 3.500 INCHES AND 4.000 INCHES IN
  • Stem Actuating End Type: THREADED EXTERNALLY
  • 3 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 4820-01-253-3566, 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 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-253-3566
Primary Part Number8350-15 ITEM 8
Item NameStem,fluid Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerVelan Valve Corp.
StatusACTIVE
Valve Type for Which DesignedGATE
MaterialSTEEL COMP 410
Valve Size for Which Designed3.500 INCHES AND 4.000 INCHES IN
Stem Actuating End TypeTHREADED EXTERNALLY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
4730-00-279-2435835-015 INTERCHANGEABLE
Coupling,pipe
Nibco Inc Chemtrol Div
4820-00-862-5033 INTERCHANGEABLE
Valve,gate
4820-01-137-4669 INTERCHANGEABLE
Stem,fluid Valve
4820-01-156-71639015-007-148 INTERCHANGEABLE
Seat,valve
Velan Valve Corp.
4820-01-237-28918995-005-031-S INTERCHANGEABLE
Disk,valve
Velan Valve Corp.
4730-01-251-09873835-015 INTERCHANGEABLE
Coupling,pipe
Ryan Herco Products Corp
4820-01-266-3630B12-2054P-02TSG INTERCHANGEABLE
Valve,gate
Velan Valve Corp.
4820-01-461-05609015-007-031-S INTERCHANGEABLE
Seat,valve
Velan Valve Corp.
5310-01-466-05128350-15 ITEM 17B INTERCHANGEABLE
Nut,plain,hexagon
Velan Valve Corp.
4820-01-466-41589015-007-033-S INTERCHANGEABLE
Seat,valve
Velan Valve Corp.
Cross-Reference Index
Part NumberManufacturer
8350-15 ITEM 8 PRIMARY Velan Valve Corp. (USA)
8350-15 Velan Valve Corp. (USA)
8965-067-063 Velan Valve Corp. (USA)
Related Parts
4730-00-279-2435INTERCHANGEABLE
COUPLING,PIPE
835-015
4820-00-862-5033INTERCHANGEABLE
VALVE,GATE
4820-01-137-4669INTERCHANGEABLE
STEM,FLUID VALVE
4820-01-156-7163INTERCHANGEABLE
SEAT,VALVE
9015-007-148
4820-01-237-2891INTERCHANGEABLE
DISK,VALVE
8995-005-031-S
4730-01-251-0987INTERCHANGEABLE
COUPLING,PIPE
3835-015
4820-01-266-3630INTERCHANGEABLE
VALVE,GATE
B12-2054P-02TSG
4820-01-461-0560INTERCHANGEABLE
SEAT,VALVE
9015-007-031-S
5310-01-466-0512INTERCHANGEABLE
NUT,PLAIN,HEXAGON
8350-15 ITEM 17B
4820-01-466-4158INTERCHANGEABLE
SEAT,VALVE
9015-007-033-S

Frequently Asked Questions

What is NSN 4820-01-253-3566?

NSN 4820-01-253-3566 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 4820-01-253-3566?

NSN 4820-01-253-3566 has 3 cross-referenced part numbers: 8350-15 ITEM 8 (Velan Valve Corp.), 8350-15 (Velan Valve Corp.), 8965-067-063 (Velan Valve Corp.).

What NSN replaces 4820-01-253-3566?

There are 10 known substitutes for 4820-01-253-3566: 4730-00-279-2435, 4820-00-862-5033, 4820-01-137-4669 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8350-15 ITEM 8?

Key specifications for 8350-15 ITEM 8: Valve Type for Which Designed: GATE; Material: STEEL COMP 410; Valve Size for Which Designed: 3.500 INCHES AND 4.000 INCHES IN; 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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