PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

820-1 1-2Valve,float

Itt Fluid Technology Corp Itt Mcdonnell and Miller · NSN 4820-00-402-9482 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-402-9482 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-402-9482. Primary manufacturer part number: 820-1 1-2.
Features
  • Valve,float — FSC 4820
  • Media for Which Designed: WATER, FRESH SINGLE RESPONSE
  • Material: RUBBER FLOW CONTROL DEVICECOPPER ALLOY BODY
  • Bonnet Type: OUTSIDE SCREW-YOKEOUTSIDE SCREW-YOKE
  • Material: RUBBER FLOW CONTROL DEVICE
  • Connection Style: PLAIN,OPTIONAL END(PIPE) ALL ENDSPLAIN,OPTIONAL END(PIPE) ALL ENDS
  • Bonnet Attachment Method: BOLTEDBOLTED
  • Valve Operation Method: AUTOMATICAUTOMATIC
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Rubber Flow Control Devicecopper Alloy Body construction
General Description

The Valve,float, cataloged under National Stock Number 4820-00-402-9482, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Itt Fluid Technology Corp Itt Mcdonnell and Miller. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 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
NSN4820-00-402-9482
Primary Part Number820-1 1-2
Item NameValve,float
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerItt Fluid Technology Corp Itt Mcdonnell and Miller
StatusACTIVE
Media for Which DesignedWATER, FRESH SINGLE RESPONSE
MaterialRUBBER FLOW CONTROL DEVICECOPPER ALLOY BODY
Bonnet TypeOUTSIDE SCREW-YOKEOUTSIDE SCREW-YOKE
MaterialRUBBER FLOW CONTROL DEVICE
Connection StylePLAIN,OPTIONAL END(PIPE) ALL ENDSPLAIN,OPTIONAL END(PIPE) ALL ENDS
Bonnet Attachment MethodBOLTEDBOLTED
Valve Operation MethodAUTOMATICAUTOMATIC
Connection TypeTHREADED INTERNAL PIPE ALL ENDSTHREADED INTERNAL PIPE ALL ENDS
Flow Control DeviceDISKDISK
Thread DirectionRIGHT-HAND ALL ENDSRIGHT-HAND ALL ENDS
Thread Series DesignatorNPT ALL ENDS
Style DesignatorSTRAIGHT THRU
Nominal Pipe Size Accommodated1.500 INCHES FIRST END1.500 INCHES FIRST END IN
Furnished Items and Quantity1 FLOAT
Nominal Thread Size1.500 INCHES ALL ENDS1.500 INCHES ALL ENDS IN
Operating Pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
1345-00-028-509282-0-112 INTERCHANGEABLE
Mine,antipersonnel,practice
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament
5360-01-071-4284820112 INTERCHANGEABLE
Spring,helical,compression
Bae Systems Information and Electronic Systems Integration Inc.
5340-01-137-4192820-1 1/2 INTERCHANGEABLE
Clip,end,strap
American Cord & Webbing Co Inc Div American Cord and Webbing
5331-01-176-79158201-20 INTERCHANGEABLE
O-Ring
Aqualung Usa, Inc
5331-01-250-3310 INTERCHANGEABLE
O-Ring
6220-01-680-5725820113 INTERCHANGEABLE
Floodlight,electric
Jst Performance, Inc. Dba Rigid Industries Div Rigid Industries
Cross-Reference Index
Part NumberManufacturer
777 O. C. Keckley Company (USA)
820-1 1-2 PRIMARY Itt Fluid Technology Corp Itt Mcdonnell and Miller (USA)
13212E6892 Cecom Lr Center (USA)
13212E6892 Met-Pro Corporation (USA)
850 Itt Fluid Technology Corp Itt Mcdonnell and Miller (USA)
Related Parts
1345-00-028-5092INTERCHANGEABLE
MINE,ANTIPERSONNEL,PRACTICE
82-0-112
5360-01-071-4284INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
820112
5340-01-137-4192INTERCHANGEABLE
CLIP,END,STRAP
820-1 1/2
5331-01-176-7915INTERCHANGEABLE
O-RING
8201-20
5331-01-250-3310INTERCHANGEABLE
O-RING
6220-01-680-5725INTERCHANGEABLE
FLOODLIGHT,ELECTRIC
820113

Frequently Asked Questions

What is NSN 4820-00-402-9482?

NSN 4820-00-402-9482 is a Valve,float, manufactured by Itt Fluid Technology Corp Itt Mcdonnell and Miller, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-402-9482?

NSN 4820-00-402-9482 has 5 cross-referenced part numbers: 777 (O. C. Keckley Company), 820-1 1-2 (Itt Fluid Technology Corp Itt Mcdonnell and Miller), 13212E6892 (Cecom Lr Center), 13212E6892 (Met-Pro Corporation), 850 (Itt Fluid Technology Corp Itt Mcdonnell and Miller).

What NSN replaces 4820-00-402-9482?

There are 6 known substitutes for 4820-00-402-9482: 1345-00-028-5092, 5360-01-071-4284, 5340-01-137-4192 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 820-1 1-2?

Key specifications for 820-1 1-2: Media for Which Designed: WATER, FRESH SINGLE RESPONSE; Material: RUBBER FLOW CONTROL DEVICECOPPER ALLOY BODY; Special Features: INCL GUIDE YOKE AND GUIDE ARM; Bonnet Type: OUTSIDE SCREW-YOKEOUTSIDE SCREW-YOKE. 17 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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