PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C4261-1-4Cartridge Assembly,valve

Admiral Valve Llc Dba Cpv Manufacturing · NSN 4820-00-965-1288 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-965-1288 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-965-1288. Primary manufacturer part number: C4261-1-4.
Features
  • Cartridge Assembly,valve — FSC 4820
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
  • Criticality Code Justification: ZZZY
  • 6 verified cross-references
  • Primary manufacturer: Admiral Valve Llc Dba Cpv Manufacturing
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Cartridge Assembly,valve, cataloged under National Stock Number 4820-00-965-1288, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Admiral Valve Llc Dba Cpv Manufacturing. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-965-1288
Primary Part NumberC4261-1-4
Item NameCartridge Assembly,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAdmiral Valve Llc Dba Cpv Manufacturing
StatusCANCELLED
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
Criticality Code JustificationZZZY
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4820-00-010-5602365-1 INTERCHANGEABLE
Cartridge,shut-Off Valve
Admiral Valve Llc Dba Cpv Manufacturing
5999-00-224-5780 INTERCHANGEABLE
Contact,electrical
9330-00-264-7629 INTERCHANGEABLE
Plastic Sheet,pressure Sensitive
4730-00-289-1235214-5901-799290PCF9 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Naval Ship Systems Command
5315-00-298-9526125278 INTERCHANGEABLE
Pin,straight,headless
Telemechanics Inc
3120-00-352-4713 INTERCHANGEABLE
Bearing,sleeve
3110-00-554-3517122358-7 INTERCHANGEABLE
Bearing,ball,annular
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5355-00-667-59341156 INTERCHANGEABLE
Knob
Entron Industries Limited Partnership Dba Entron Industries Property Div
4730-00-943-0458 INTERCHANGEABLE
Elbow,pipe
4820-01-062-3670365-1 INTERCHANGEABLE
Cartridge,valve
Admiral Valve Llc Dba Cpv Manufacturing
Cross-Reference Index
Part NumberManufacturer
C4261-1-4 Admiral Valve Llc Dba Cpv Manufacturing (USA)
845-2181262 ASSY 60A Electric Boat Corporation Div General Dynamics Electric Boat (USA)
2620-932X1ASSY60A Electric Boat Corporation Div General Dynamics Electric Boat (USA)
845-2181262-60A Naval Ship Systems Command (USA)
365-1 Admiral Valve Llc Dba Cpv Manufacturing (USA)
C-9171(PCS2-13) Admiral Valve Llc Dba Cpv Manufacturing (USA)
Related Parts
4820-00-010-5602INTERCHANGEABLE
CARTRIDGE,SHUT-OFF VALVE
365-1
5999-00-224-5780INTERCHANGEABLE
CONTACT,ELECTRICAL
9330-00-264-7629INTERCHANGEABLE
PLASTIC SHEET,PRESSURE SENSITIVE
4730-00-289-1235INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
214-5901-799290PCF9
5315-00-298-9526INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
125278
3120-00-352-4713INTERCHANGEABLE
BEARING,SLEEVE
3110-00-554-3517INTERCHANGEABLE
BEARING,BALL,ANNULAR
122358-7
5355-00-667-5934INTERCHANGEABLE
KNOB
1156
4730-00-943-0458INTERCHANGEABLE
ELBOW,PIPE
4820-01-062-3670INTERCHANGEABLE
CARTRIDGE,VALVE
365-1
4820-01-142-8933INTERCHANGEABLE
CARTRIDGE,SHUT-OFF VALVE
365-1-OX PL4398
5120-01-161-4539INTERCHANGEABLE
BLADE,NUTDRIVER

Frequently Asked Questions

What is NSN 4820-00-965-1288?

NSN 4820-00-965-1288 is a Cartridge Assembly,valve, manufactured by Admiral Valve Llc Dba Cpv Manufacturing, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-965-1288?

NSN 4820-00-965-1288 has 6 cross-referenced part numbers: C4261-1-4 (Admiral Valve Llc Dba Cpv Manufacturing), 845-2181262 ASSY 60A (Electric Boat Corporation Div General Dynamics Electric Boat), 2620-932X1ASSY60A (Electric Boat Corporation Div General Dynamics Electric Boat), 845-2181262-60A (Naval Ship Systems Command), 365-1 (Admiral Valve Llc Dba Cpv Manufacturing) and 1 more.

What NSN replaces 4820-00-965-1288?

There are 12 known substitutes for 4820-00-965-1288: 4820-00-010-5602, 5999-00-224-5780, 9330-00-264-7629 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of C4261-1-4?

Key specifications for C4261-1-4: Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.; Criticality Code Justification: ZZZY. 2 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-965-1288 still in active supply?

NSN 4820-00-965-1288 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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