PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

803-2177934-X53X-9-12-14-15Parts Kit,stop-Check Valve

Naval Ship Systems Command · NSN 4820-01-022-7635 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-022-7635 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-022-7635. Primary manufacturer part number: 803-2177934-X53X-9-12-14-15.
Features
  • Parts Kit,stop-Check Valve — FSC 4820
  • Nonsupply Items and Quantities: DISK RETAING SCREW 1,DISK HOLDER 1,PLASTIC DISK 1,DISK RETAINER 1
  • Component Quantity: 4
  • 3 verified cross-references
  • Primary manufacturer: Naval Ship Systems Command
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Parts Kit,stop-Check Valve, cataloged under National Stock Number 4820-01-022-7635, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Naval Ship Systems Command. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-022-7635
Primary Part Number803-2177934-X53X-9-12-14-15
Item NameParts Kit,stop-Check Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerNaval Ship Systems Command
StatusACTIVE
Nonsupply Items and QuantitiesDISK RETAING SCREW 1,DISK HOLDER 1,PLASTIC DISK 1,DISK RETAINER 1
Component Quantity4
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4820-00-261-96872620-902 PIECE 27 1IN INTERCHANGEABLE
Disk,valve
The Walworth Company
4820-01-156-8235803-2177934-B326AF INTERCHANGEABLE
Valve,angle
Naval Ship Systems Command
4820-01-549-5993845-1889587PC4,1/2IN INTERCHANGEABLE
Seat,valve
Naval Ship Systems Command
Cross-Reference Index
Part NumberManufacturer
803-2177934-X53X-9-12-14-15 PRIMARY Naval Ship Systems Command (USA)
1889587 Naval Ship Systems Command (USA)
11-03-9044 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
Related Parts
4820-00-261-9687INTERCHANGEABLE
DISK,VALVE
2620-902 PIECE 27 1IN
4820-01-156-8235INTERCHANGEABLE
VALVE,ANGLE
803-2177934-B326AF
4820-01-549-5993INTERCHANGEABLE
SEAT,VALVE
845-1889587PC4,1/2IN

Frequently Asked Questions

What is NSN 4820-01-022-7635?

NSN 4820-01-022-7635 is a Parts Kit,stop-Check Valve, manufactured by Naval Ship Systems Command, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-022-7635?

NSN 4820-01-022-7635 has 3 cross-referenced part numbers: 803-2177934-X53X-9-12-14-15 (Naval Ship Systems Command), 1889587 (Naval Ship Systems Command), 11-03-9044 (Electric Boat Corporation Div General Dynamics Electric Boat).

What NSN replaces 4820-01-022-7635?

There are 3 known substitutes for 4820-01-022-7635: 4820-00-261-9687, 4820-01-156-8235, 4820-01-549-5993. Verify interchangeability with system specifications before substitution.

What are the specifications of 803-2177934-X53X-9-12-14-15?

Key specifications for 803-2177934-X53X-9-12-14-15: Nonsupply Items and Quantities: DISK RETAING SCREW 1,DISK HOLDER 1,PLASTIC DISK 1,DISK RETAINER 1; Component Quantity: 4. 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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