PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

240046Check Assembly Valv

Hydro-Test Products, Inc. Dba Hydro-Test Products Inc · NSN 4820-00-491-9577 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-491-9577 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-491-9577. Primary manufacturer part number: 240046.
Features
  • Check Assembly Valv — FSC 4820
  • 2 verified cross-references
  • Primary manufacturer: Hydro-Test Products, Inc. Dba Hydro-Test Products Inc
Applications
  • Flow control in piping systems
  • Water treatment infrastructure
  • Industrial process control
General Description

The Check Assembly Valv, cataloged under National Stock Number 4820-00-491-9577, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Hydro-Test Products, Inc. Dba Hydro-Test Products Inc. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameCheck Assembly Valv
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersFyr-Fyter Co Inc (CAGE 01317); Hydro-Test Products, Inc. Dba Hydro-Test Products Inc (CAGE 56043)
Technical Specifications
ParameterValue
NSN4820-00-491-9577
Primary Part Number240046
Item NameCheck Assembly Valv
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHydro-Test Products, Inc. Dba Hydro-Test Products Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5360-00-540-319172194 INTERCHANGEABLE
Spring,helical,compression
Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
5325-00-936-7134187240R91 INTERCHANGEABLE
Ring,retaining
Navistar Intl Corp Truck Br Ohio Plant
4320-00-950-235172194 INTERCHANGEABLE
Actuator,pump
Eaton Aerospace, Llc Dba Jackson South
4820-01-206-499972194 INTERCHANGEABLE
Valve,check
Hydro-Test Products, Inc. Dba Hydro-Test Products Inc
5315-01-297-7376 INTERCHANGEABLE
Key,machine
5315-01-345-4551 INTERCHANGEABLE
Key,machine
6515-01-591-7338240.046 INTERCHANGEABLE
Bone Plate
Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma
Cross-Reference Index
Part NumberManufacturer
72194 Fyr-Fyter Co Inc (USA)
240046 PRIMARY Hydro-Test Products, Inc. Dba Hydro-Test Products Inc (USA)
Related Parts
5360-00-540-3191INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
72194
5325-00-936-7134INTERCHANGEABLE
RING,RETAINING
187240R91
4320-00-950-2351INTERCHANGEABLE
ACTUATOR,PUMP
72194
4820-01-206-4999INTERCHANGEABLE
VALVE,CHECK
72194
5315-01-297-7376INTERCHANGEABLE
KEY,MACHINE
5315-01-345-4551INTERCHANGEABLE
KEY,MACHINE
6515-01-591-7338INTERCHANGEABLE
BONE PLATE
240.046

Frequently Asked Questions

What is NSN 4820-00-491-9577?

NSN 4820-00-491-9577 is a Check Assembly Valv, manufactured by Hydro-Test Products, Inc. Dba Hydro-Test Products Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-491-9577?

NSN 4820-00-491-9577 has 2 cross-referenced part numbers: 72194 (Fyr-Fyter Co Inc), 240046 (Hydro-Test Products, Inc. Dba Hydro-Test Products Inc).

What NSN replaces 4820-00-491-9577?

There are 7 known substitutes for 4820-00-491-9577: 5360-00-540-3191, 5325-00-936-7134, 4320-00-950-2351 and 4 more. Verify interchangeability with system specifications before substitution.

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