PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1390 1-1/4X3/4Reducer,pipe

Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy · NSN 4730-01-022-6011 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-022-6011 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-022-6011. Primary manufacturer part number: 1390 1-1/4X3/4.
Features
  • Reducer,pipe — FSC 4730
  • Material: STEEL OVERALL
  • Connection Type: UNTHREADED EXTERNAL PIPE SECOND END
  • Reducer Type: CONCENTRIC
  • Nominal Pipe Size Accommodated: 1.250 INCHES FIRST END IN
  • Material Document and Classification: ASTM A181 GRADE 1 OR A105 GRADE 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Pipe Wall Thickness Designation for Which Designed: SCHEDULE 80 FIRST END
  • Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Overall construction
General Description

The Reducer,pipe, cataloged under National Stock Number 4730-01-022-6011, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy. Government technical data includes 13 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-022-6011
Primary Part Number1390 1-1/4X3/4
Item NameReducer,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerAti Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy
StatusACTIVE
MaterialSTEEL OVERALL
Connection TypeUNTHREADED EXTERNAL PIPE SECOND END
Reducer TypeCONCENTRIC
Nominal Pipe Size Accommodated1.250 INCHES FIRST END IN
Material Document and ClassificationASTM A181 GRADE 1 OR A105 GRADE 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Pipe Wall Thickness Designation for Which DesignedSCHEDULE 80 FIRST END
Operating Pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Connection StyleSOCKET (PIPE) FIRST END
Nominal Pipe Size Accommodated0.750 INCHES SECOND END IN
Connection TypeUNTHREADED INTERNAL PIPE FIRST END
Connection StylePLAIN (PIPE) SECOND END
Nominal Overall Length1.750 INCHES IN
Media for Which DesignedWATER-OIL-GAS SINGLE RESPONSE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
4730-00-595-3978 INTERCHANGEABLE
Elbow,pipe
4730-00-840-87241381-1 1-4IN INTERCHANGEABLE
Tee,pipe
Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy
4730-01-022-6010SW503-1-1/4X1/2 INTERCHANGEABLE
Reducer,pipe
Flowserve Inc
4730-01-022-76051390-2X1-1/4 INTERCHANGEABLE
Reducer,pipe
Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy
4730-01-023-0825B16 11-73 INTERCHANGEABLE
Reducer,pipe
American National Standards Institute Incorporated Dba American National Standards Institute
4730-01-023-7730 INTERCHANGEABLE
Union,pipe
Cross-Reference Index
Part NumberManufacturer
1390 1-1/4X3/4 PRIMARY Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy (USA)
B16.11-73 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
Related Parts
4730-00-595-3978INTERCHANGEABLE
ELBOW,PIPE
4730-00-840-8724INTERCHANGEABLE
TEE,PIPE
1381-1 1-4IN
4730-01-022-6010INTERCHANGEABLE
REDUCER,PIPE
SW503-1-1/4X1/2
4730-01-022-7605INTERCHANGEABLE
REDUCER,PIPE
1390-2X1-1/4
4730-01-023-0825INTERCHANGEABLE
REDUCER,PIPE
B16 11-73
4730-01-023-7730INTERCHANGEABLE
UNION,PIPE

Frequently Asked Questions

What is NSN 4730-01-022-6011?

NSN 4730-01-022-6011 is a Reducer,pipe, manufactured by Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-022-6011?

NSN 4730-01-022-6011 has 2 cross-referenced part numbers: 1390 1-1/4X3/4 (Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy), B16.11-73 (American National Standards Institute Incorporated Dba American National Standards Institute).

What NSN replaces 4730-01-022-6011?

There are 6 known substitutes for 4730-01-022-6011: 4730-00-595-3978, 4730-00-840-8724, 4730-01-022-6010 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1390 1-1/4X3/4?

Key specifications for 1390 1-1/4X3/4: Material: STEEL OVERALL; Connection Type: UNTHREADED EXTERNAL PIPE SECOND END; Reducer Type: CONCENTRIC; Nominal Pipe Size Accommodated: 1.250 INCHES FIRST END IN. 13 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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