PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11263Parts Kit,valve

Westwater Supply Corp · NSN 4820-01-377-3970 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-377-3970 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-377-3970. Primary manufacturer part number: 11263.
Features
  • Parts Kit,valve — FSC 4820
  • Component Quantity: 6
  • End Item Source: 71342
  • End Item Name: VALVE,REGULATING FLUID PRESSURE
  • Document Source: 71342
  • Nonsupply Items and Quantities: DIAPHRAGM 1; SEAT DISK 1; SCREW 1; PLUG GASKET 1; BODY SEAT 1; PRESSURE SPRING 1
  • Component Document Origin: INDUSTRIAL
  • 2 verified cross-references
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Parts Kit,valve, cataloged under National Stock Number 4820-01-377-3970, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Westwater Supply Corp. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-377-3970
Primary Part Number11263
Item NameParts Kit,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerWestwater Supply Corp
StatusACTIVE
Component Quantity6
End Item Source71342
End Item NameVALVE,REGULATING FLUID PRESSURE
Document Source71342
Nonsupply Items and QuantitiesDIAPHRAGM 1; SEAT DISK 1; SCREW 1; PLUG GASKET 1; BODY SEAT 1; PRESSURE SPRING 1
Component Document OriginINDUSTRIAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
2520-00-127-145711263 INTERCHANGEABLE
Arm
Komatsu America Corporation
5950-00-488-30422919901 INTERCHANGEABLE
Reactor
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
3110-00-558-09362000-1263 INTERCHANGEABLE
Bearing,roller,cylindrical
American Hofmann Corp
5935-00-686-0211GS17041-157 INTERCHANGEABLE
Connector,receptacle,electrical
Itt Cannon Llc
5930-00-729-84439163092 INTERCHANGEABLE
Switch,toggle
Us Army Aviation and Missile Command
5310-01-054-151911263 INTERCHANGEABLE
Nut,sleeve
Paccar Winch Inc Dba Paccar Winch Division
5950-01-076-182112272683 INTERCHANGEABLE
Transformer,pulse
U S Army Tank Automotive Command Amsta-Im-Mm
5330-01-145-0733 INTERCHANGEABLE
Gasket
5330-01-180-527711263 INTERCHANGEABLE
Gasket
DP Manufacturing Inc.
5120-01-430-7791 INTERCHANGEABLE
Socket,socket Wrench
Cross-Reference Index
Part NumberManufacturer
E41 SERIES 3 REPAIR KIT Imi Cash Valve Inc (USA)
11263 PRIMARY Westwater Supply Corp (USA)
Related Parts
2520-00-127-1457INTERCHANGEABLE
ARM
11263
5950-00-488-3042INTERCHANGEABLE
REACTOR
2919901
3110-00-558-0936INTERCHANGEABLE
BEARING,ROLLER,CYLINDRICAL
2000-1263
5935-00-686-0211INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
GS17041-157
5930-00-729-8443INTERCHANGEABLE
SWITCH,TOGGLE
9163092
5310-01-054-1519INTERCHANGEABLE
NUT,SLEEVE
11263
5950-01-076-1821INTERCHANGEABLE
TRANSFORMER,PULSE
12272683
5330-01-145-0733INTERCHANGEABLE
GASKET
5330-01-180-5277INTERCHANGEABLE
GASKET
11263
5120-01-430-7791INTERCHANGEABLE
SOCKET,SOCKET WRENCH
4820-01-549-5737INTERCHANGEABLE
VALVE,BALL
11263

Frequently Asked Questions

What is NSN 4820-01-377-3970?

NSN 4820-01-377-3970 is a Parts Kit,valve, manufactured by Westwater Supply Corp, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-377-3970?

NSN 4820-01-377-3970 has 2 cross-referenced part numbers: E41 SERIES 3 REPAIR KIT (Imi Cash Valve Inc), 11263 (Westwater Supply Corp).

What NSN replaces 4820-01-377-3970?

There are 11 known substitutes for 4820-01-377-3970: 2520-00-127-1457, 5950-00-488-3042, 3110-00-558-0936 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11263?

Key specifications for 11263: Component Quantity: 6; End Item Identification: E41 SERIES; End Item Source: 71342; End Item Name: VALVE,REGULATING FLUID PRESSURE. 7 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com