PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8265-050-031Cap,valve

Velan Valve Corp. · NSN 4820-01-493-7419 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-493-7419 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-493-7419. Primary manufacturer part number: 8265-050-031.
Features
  • Cap,valve — FSC 4820
  • Material: STEEL
  • Valve Size for Which Designed: 3.500 INCHES AND 4.000 INCHES IN
  • Material Document and Classification: ASTM A216 GR WCB ASSN STD SINGLE MATERIAL RESPONSE
  • Valve Type for Which Designed: CHECK AND GLOBE
  • 3 verified cross-references
  • Primary manufacturer: Velan Valve Corp.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel construction
General Description

The Cap,valve, cataloged under National Stock Number 4820-01-493-7419, 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
NSN4820-01-493-7419
Primary Part Number8265-050-031
Item NameCap,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerVelan Valve Corp.
StatusACTIVE
MaterialSTEEL
Valve Size for Which Designed3.500 INCHES AND 4.000 INCHES IN
Material Document and ClassificationASTM A216 GR WCB ASSN STD SINGLE MATERIAL RESPONSE
Valve Type for Which DesignedCHECK AND GLOBE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
4820-01-156-4876A12-7945-056-209 INTERCHANGEABLE
Stem and Disc Assembly
Velan Valve Corp.
4820-01-388-3146 INTERCHANGEABLE
Cap,valve
4820-01-437-3054A12-7945-053-178 INTERCHANGEABLE
Stem,fluid Valve
Velan Valve Corp.
5310-01-466-409288-22790-5 INTERCHANGEABLE
Nut,plain,hexagon
Department of Defense Project Manager-Mobile Electric Power
4820-01-468-83867915-078-063 INTERCHANGEABLE
Stem,fluid Valve
Velan Valve Corp.
4820-01-468-84247945-053-002-S INTERCHANGEABLE
Disk,valve
Velan Valve Corp.
4820-01-468-84318255-000-061 INTERCHANGEABLE
Disk,valve
Velan Valve Corp.
4820-01-469-2199B12-2074P-02TS,CDS244978GO1 IT31 INTERCHANGEABLE
Valve,globe
Velan Valve Corp.
4820-01-470-57509553-003-065 INTERCHANGEABLE
Disk Pad,valve
Velan Valve Corp.
4820-01-545-2266 INTERCHANGEABLE
Valve,relief,pressure and Temper
Cross-Reference Index
Part NumberManufacturer
7850-013 Velan Valve Corp. (USA)
7850-013 ITEM 02 Velan Valve Corp. (USA)
8265-050-031 PRIMARY Velan Valve Corp. (USA)
Related Parts
4820-01-156-4876INTERCHANGEABLE
STEM AND DISC ASSEMBLY
A12-7945-056-209
4820-01-388-3146INTERCHANGEABLE
CAP,VALVE
4820-01-437-3054INTERCHANGEABLE
STEM,FLUID VALVE
A12-7945-053-178
5310-01-466-4092INTERCHANGEABLE
NUT,PLAIN,HEXAGON
88-22790-5
4820-01-468-8386INTERCHANGEABLE
STEM,FLUID VALVE
7915-078-063
4820-01-468-8424INTERCHANGEABLE
DISK,VALVE
7945-053-002-S
4820-01-468-8431INTERCHANGEABLE
DISK,VALVE
8255-000-061
4820-01-469-2199INTERCHANGEABLE
VALVE,GLOBE
B12-2074P-02TS,CDS244978GO1 IT31
4820-01-470-5750INTERCHANGEABLE
DISK PAD,VALVE
9553-003-065
4820-01-545-2266INTERCHANGEABLE
VALVE,RELIEF,PRESSURE AND TEMPER

Frequently Asked Questions

What is NSN 4820-01-493-7419?

NSN 4820-01-493-7419 is a Cap,valve, manufactured by Velan Valve Corp., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-493-7419?

NSN 4820-01-493-7419 has 3 cross-referenced part numbers: 7850-013 (Velan Valve Corp.), 7850-013 ITEM 02 (Velan Valve Corp.), 8265-050-031 (Velan Valve Corp.).

What NSN replaces 4820-01-493-7419?

There are 10 known substitutes for 4820-01-493-7419: 4820-01-156-4876, 4820-01-388-3146, 4820-01-437-3054 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8265-050-031?

Key specifications for 8265-050-031: Special Features: PART IDENTIFIED AS "YOKE" AND MADE OF CARBON STEEL; FOR NUCLEAR APPLICATIONS USE NSN 4820-01-388-3146; End Item Identification: VELAN 3 1/2" AND 4" PRESSURE SEAL GLOBE, NEEDLE, AND STOP CHECK VALVE; Material: STEEL; Valve Size for Which Designed: 3.500 INCHES AND 4.000 INCHES IN. 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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