PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A446Valve,check

Industrial Specialties Mfg Inc · NSN 4820-01-619-9822 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-619-9822 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-619-9822. Primary manufacturer part number: A446.
Features
  • Valve,check — FSC 4820
  • 2 verified cross-references
  • Primary manufacturer: Industrial Specialties Mfg Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,check, cataloged under National Stock Number 4820-01-619-9822, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Industrial Specialties Mfg Inc. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameValve,check
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersMcmaster-Carr Supply Co (CAGE 0KVE6); Industrial Specialties Mfg Inc (CAGE 9R925)
Technical Specifications
ParameterValue
NSN4820-01-619-9822
Primary Part NumberA446
Item NameValve,check
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerIndustrial Specialties Mfg Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
2510-00-425-9395 INTERCHANGEABLE
Shackle Assembly,sp
5360-00-664-3959A446 INTERCHANGEABLE
Spring,helical,compression
Aerocontrolex Group, Inc. Div Talley Actuators
5945-00-820-6373 INTERCHANGEABLE
Solenoid,electrical
5930-00-876-9358577B43-3 INTERCHANGEABLE
Switch,thermostatic
Cardwell Condenser Corp Lapointe-Admiral Div
Cross-Reference Index
Part NumberManufacturer
47245K11 Mcmaster-Carr Supply Co (USA)
A446 PRIMARY Industrial Specialties Mfg Inc (USA)
Related Parts
2510-00-425-9395INTERCHANGEABLE
SHACKLE ASSEMBLY,SP
5360-00-664-3959INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
A446
5945-00-820-6373INTERCHANGEABLE
SOLENOID,ELECTRICAL
5930-00-876-9358INTERCHANGEABLE
SWITCH,THERMOSTATIC
577B43-3

Frequently Asked Questions

What is NSN 4820-01-619-9822?

NSN 4820-01-619-9822 is a Valve,check, manufactured by Industrial Specialties Mfg Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-619-9822?

NSN 4820-01-619-9822 has 2 cross-referenced part numbers: 47245K11 (Mcmaster-Carr Supply Co), A446 (Industrial Specialties Mfg Inc).

What NSN replaces 4820-01-619-9822?

There are 4 known substitutes for 4820-01-619-9822: 2510-00-425-9395, 5360-00-664-3959, 5945-00-820-6373 and 1 more. Verify interchangeability with system specifications before substitution.

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