PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

73-103-01 1/2INValve,ball

Aalberts Integrated Piping Systems Americas, Inc. · NSN 4820-01-428-1805 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-428-1805 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-428-1805. Primary manufacturer part number: 73-103-01 1/2IN.
Features
  • Valve,ball — FSC 4820
  • Style Designator: STRAIGHT THRU
  • Bonnet Type: INSIDE SCREW
  • Furnished Items and Quantity: 1 LEVER
  • Material: STEEL BODY
  • Operating Pressure: 2000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Material: STEEL STEM
  • Connection Type: THREADED INTERNAL PIPE ALL ENDS
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Body construction
General Description

The Valve,ball, cataloged under National Stock Number 4820-01-428-1805, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Aalberts Integrated Piping Systems Americas, Inc.. Government technical data includes 17 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-428-1805
Primary Part Number73-103-01 1/2IN
Item NameValve,ball
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAalberts Integrated Piping Systems Americas, Inc.
StatusACTIVE
Style DesignatorSTRAIGHT THRU
Bonnet TypeINSIDE SCREW
Furnished Items and Quantity1 LEVER
MaterialSTEEL BODY
Operating Pressure2000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MaterialSTEEL STEM
Connection TypeTHREADED INTERNAL PIPE ALL ENDS
Thread DirectionRIGHT-HAND ALL ENDS
Nominal Thread Size0.500 INCHES ALL ENDS IN
Thread Series DesignatorNPTF ALL ENDS
Bonnet Attachment MethodTHREADED
Connection StylePLAIN,OPTIONAL END(PIPE) ALL ENDS
Media for Which DesignedWATER-OIL-GAS SINGLE RESPONSE
MaterialPLASTIC POLYTETRAFLUOROETHYLENE SEAT
Maximum Operating Temp100.0 FAHRENHEIT SINGLE RESPONSE DEGF
MaterialSTEEL FLOW CONTROL DEVICE
Valve Operation MethodMANUAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5999-00-137-113307-0501-0103 INTERCHANGEABLE
Shielding Gasket,electronic
Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division
3110-00-156-8076177003-49 INTERCHANGEABLE
Bearing,ball,annular
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6210-00-442-249273-103 INTERCHANGEABLE
Hanger,lighting Fixture
Kirsch Co
6930-00-739-750973-103 INTERCHANGEABLE
Servovalve
Moog Inc
5985-00-867-026273103 INTERCHANGEABLE
Antenna
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
5330-01-047-612873158-235 INTERCHANGEABLE
Packing,preformed
Tld Ace Corp Div Tld Ace
6220-01-252-9278358194 INTERCHANGEABLE
Light,indicator
Hyster-Yale Group, Inc.
4330-01-598-682073103 INTERCHANGEABLE
Pin Slotted,separator Bowl
Alfa Laval Inc
5331-01-711-045573103 INTERCHANGEABLE
O-Ring
Williams International Co., L.l.c.
Cross-Reference Index
Part NumberManufacturer
73-103-01 1/2IN PRIMARY Aalberts Integrated Piping Systems Americas, Inc. (USA)
73-103 Conbraco Industries Inc (USA)
Related Parts
5999-00-137-1133INTERCHANGEABLE
SHIELDING GASKET,ELECTRONIC
07-0501-0103
3110-00-156-8076INTERCHANGEABLE
BEARING,BALL,ANNULAR
177003-49
6210-00-442-2492INTERCHANGEABLE
HANGER,LIGHTING FIXTURE
73-103
6930-00-739-7509INTERCHANGEABLE
SERVOVALVE
73-103
5985-00-867-0262INTERCHANGEABLE
ANTENNA
73103
5330-01-047-6128INTERCHANGEABLE
PACKING,PREFORMED
73158-235
6220-01-252-9278INTERCHANGEABLE
LIGHT,INDICATOR
358194
4330-01-598-6820INTERCHANGEABLE
PIN SLOTTED,SEPARATOR BOWL
73103
5331-01-711-0455INTERCHANGEABLE
O-RING
73103

Frequently Asked Questions

What is NSN 4820-01-428-1805?

NSN 4820-01-428-1805 is a Valve,ball, manufactured by Aalberts Integrated Piping Systems Americas, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-428-1805?

NSN 4820-01-428-1805 has 2 cross-referenced part numbers: 73-103-01 1/2IN (Aalberts Integrated Piping Systems Americas, Inc.), 73-103 (Conbraco Industries Inc).

What NSN replaces 4820-01-428-1805?

There are 9 known substitutes for 4820-01-428-1805: 5999-00-137-1133, 3110-00-156-8076, 6210-00-442-2492 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 73-103-01 1/2IN?

Key specifications for 73-103-01 1/2IN: Style Designator: STRAIGHT THRU; Bonnet Type: INSIDE SCREW; Furnished Items and Quantity: 1 LEVER; Material: STEEL BODY. 18 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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