PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

VRK-4-NRepair Kit,valve

Circor Aerospace Inc · NSN 4820-01-513-5931 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-513-5931 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-513-5931. Primary manufacturer part number: VRK-4-N.
Features
  • Repair Kit,valve — FSC 4820
  • 4 verified cross-references
  • Primary manufacturer: Circor Aerospace Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Repair Kit,valve, cataloged under National Stock Number 4820-01-513-5931, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Circor Aerospace Inc. This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRepair Kit,valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersCircor Aerospace Inc (CAGE 1DRT7); Circor Aerospace, Inc. Dba Sei Products (CAGE 05CT0)
Technical Specifications
ParameterValue
NSN4820-01-513-5931
Primary Part NumberVRK-4-N
Item NameRepair Kit,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerCircor Aerospace Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3040-00-272-96047587-25 INTERCHANGEABLE
Parts Kit,linear Actuating Cylin
Landoll Company, Llc
5905-00-685-9578433924-2 INTERCHANGEABLE
Resistance Element
Honeywell International Inc. Dba Honeywell International Div Aerospace-Minneapolis
4930-00-779-6277050680 INTERCHANGEABLE
Gear Worm Assembly
Kls Lubraquip Inc
4730-01-317-1170AE16560-16W INTERCHANGEABLE
Tee,pipe
Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution
3455-01-337-1820 INTERCHANGEABLE
File,rotary
5365-01-540-5243 INTERCHANGEABLE
Spacer,sleeve
Cross-Reference Index
Part NumberManufacturer
VRK-4-N PRIMARY Circor Aerospace Inc (USA)
50633 Circor Aerospace, Inc. Dba Sei Products (USA)
VRK-4-N Circor Aerospace, Inc. Dba Sei Products (USA)
50633 PRIMARY Circor Aerospace Inc (USA)
Related Parts
3040-00-272-9604INTERCHANGEABLE
PARTS KIT,LINEAR ACTUATING CYLIN
7587-25
5905-00-685-9578INTERCHANGEABLE
RESISTANCE ELEMENT
433924-2
4930-00-779-6277INTERCHANGEABLE
GEAR WORM ASSEMBLY
050680
4730-01-317-1170INTERCHANGEABLE
TEE,PIPE
AE16560-16W
3455-01-337-1820INTERCHANGEABLE
FILE,ROTARY
5365-01-540-5243INTERCHANGEABLE
SPACER,SLEEVE

Frequently Asked Questions

What is NSN 4820-01-513-5931?

NSN 4820-01-513-5931 is a Repair Kit,valve, manufactured by Circor Aerospace Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-513-5931?

NSN 4820-01-513-5931 has 4 cross-referenced part numbers: VRK-4-N (Circor Aerospace Inc), 50633 (Circor Aerospace, Inc. Dba Sei Products), VRK-4-N (Circor Aerospace, Inc. Dba Sei Products), 50633 (Circor Aerospace Inc).

What NSN replaces 4820-01-513-5931?

There are 6 known substitutes for 4820-01-513-5931: 3040-00-272-9604, 5905-00-685-9578, 4930-00-779-6277 and 3 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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