PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

52431Valve,stop-Check

Tyco Fire Products Lp · NSN 4820-01-451-7923 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-451-7923 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-451-7923. Primary manufacturer part number: 52431.
Features
  • Valve,stop-Check — FSC 4820
  • 2 verified cross-references
  • Primary manufacturer: Tyco Fire Products Lp
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,stop-Check, cataloged under National Stock Number 4820-01-451-7923, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Tyco Fire Products Lp. This item has 2 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.

Technical Specifications
ParameterValue
NSN4820-01-451-7923
Primary Part Number52431
Item NameValve,stop-Check
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTyco Fire Products Lp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3110-00-156-8379 INTERCHANGEABLE
Bearing,ball,annular
3020-00-569-0331 INTERCHANGEABLE
Gear,spur
4720-00-673-774752-431 INTERCHANGEABLE
Tubing,nonmetallic
Trico Products Corporation
4920-01-127-4643296502-1 INTERCHANGEABLE
Test Plug,aircraft Component
Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix
4730-01-448-707044630 INTERCHANGEABLE
Nozzle,spray,fluid-Emulsion
Tyco Fire Products Lp
4720-01-449-592742425 INTERCHANGEABLE
Hose,nonmetallic
Tyco Fire Products Lp
Cross-Reference Index
Part NumberManufacturer
296502-1 Military Sealift Command Dba Military Sealift Command Div Department of the Navy (USA)
52431 PRIMARY Tyco Fire Products Lp (USA)
Related Parts
3110-00-156-8379INTERCHANGEABLE
BEARING,BALL,ANNULAR
3020-00-569-0331INTERCHANGEABLE
GEAR,SPUR
4720-00-673-7747INTERCHANGEABLE
TUBING,NONMETALLIC
52-431
4920-01-127-4643INTERCHANGEABLE
TEST PLUG,AIRCRAFT COMPONENT
296502-1
4730-01-448-7070INTERCHANGEABLE
NOZZLE,SPRAY,FLUID-EMULSION
44630
4720-01-449-5927INTERCHANGEABLE
HOSE,NONMETALLIC
42425

Frequently Asked Questions

What is NSN 4820-01-451-7923?

NSN 4820-01-451-7923 is a Valve,stop-Check, manufactured by Tyco Fire Products Lp, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-451-7923?

NSN 4820-01-451-7923 has 2 cross-referenced part numbers: 296502-1 (Military Sealift Command Dba Military Sealift Command Div Department of the Navy), 52431 (Tyco Fire Products Lp).

What NSN replaces 4820-01-451-7923?

There are 6 known substitutes for 4820-01-451-7923: 3110-00-156-8379, 3020-00-569-0331, 4720-00-673-7747 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 52431?

Key specifications for 52431: Part Name Assigned by Controlling Agency: STOP VALVE; End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS. 2 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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