PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1447-7Diaphragm,actuator Valve,special

Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives · NSN 4820-01-266-5333 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-266-5333 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-266-5333. Primary manufacturer part number: 1447-7.
Features
  • Diaphragm,actuator Valve,special — FSC 4820
  • 1 verified cross-reference
  • Primary manufacturer: Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Diaphragm,actuator Valve,special, cataloged under National Stock Number 4820-01-266-5333, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives. This item has 1 commercial cross-reference from 1 manufacturer, 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 NameDiaphragm,actuator Valve,special
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersSiemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives (CAGE 41387)
Technical Specifications
ParameterValue
NSN4820-01-266-5333
Primary Part Number1447-7
Item NameDiaphragm,actuator Valve,special
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSiemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5305-00-373-865414477 INTERCHANGEABLE
Setscrew
Triumph Engine Control Systems Llc
4710-00-720-116814477 INTERCHANGEABLE
Tube Assembly,metal
Triumph Controls, Llc Dba Triumph Controls, Llc
5315-01-342-537714477 INTERCHANGEABLE
Pin,straight,headless
Blue Tee Corp. Dba Gefco
5305-01-506-8206144-77 INTERCHANGEABLE
Screw,cap,hexagon Head
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4720-01-509-4836144-77 INTERCHANGEABLE
Hose Assembly,nonmetallic
Crane Carrier Company, Llc
5306-01-556-539714477 INTERCHANGEABLE
Bolt,machine
Fastenal Company Dba Fastenal Co
6520-01-581-0087257506 INTERCHANGEABLE
Attachment,straight,dental Handp
Dentalez, Inc. Dba Star Dental
Cross-Reference Index
Part NumberManufacturer
1447-7 PRIMARY Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives (USA)
Related Parts
5305-00-373-8654INTERCHANGEABLE
SETSCREW
14477
4710-00-720-1168INTERCHANGEABLE
TUBE ASSEMBLY,METAL
14477
5315-01-342-5377INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
14477
5305-01-506-8206INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
144-77
4720-01-509-4836INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
144-77
5306-01-556-5397INTERCHANGEABLE
BOLT,MACHINE
14477
6520-01-581-0087INTERCHANGEABLE
ATTACHMENT,STRAIGHT,DENTAL HANDP
257506

Frequently Asked Questions

What is NSN 4820-01-266-5333?

NSN 4820-01-266-5333 is a Diaphragm,actuator Valve,special, manufactured by Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-266-5333?

NSN 4820-01-266-5333 has 1 cross-referenced part number: 1447-7 (Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives).

What NSN replaces 4820-01-266-5333?

There are 7 known substitutes for 4820-01-266-5333: 5305-00-373-8654, 4710-00-720-1168, 5315-01-342-5377 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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