PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

R400-1/2Valve,float

Robert Manufacturing Company Inc · NSN 4820-00-269-7064 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-269-7064 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-269-7064. Primary manufacturer part number: R400-1/2.
Features
  • Valve,float — FSC 4820
  • Media for Which Designed: WATER, FRESH SINGLE RESPONSE
  • Nominal Thread Size: 0.500 INCHES ALL ENDS IN
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE
  • Operating Pressure: 100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Flow Control Device: DISK
  • Style Designator: ANGLE
  • Bonnet Type: INSIDE SCREW
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr Flow Control Device construction
General Description

The Valve,float, cataloged under National Stock Number 4820-00-269-7064, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Robert Manufacturing Company Inc. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-269-7064
Primary Part NumberR400-1/2
Item NameValve,float
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerRobert Manufacturing Company Inc
StatusACTIVE
Media for Which DesignedWATER, FRESH SINGLE RESPONSE
Nominal Thread Size0.500 INCHES ALL ENDS IN
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE
Operating Pressure100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Flow Control DeviceDISK
Style DesignatorANGLE
Bonnet TypeINSIDE SCREW
Thread DirectionRIGHT-HAND ALL ENDS
Valve Operation MethodAUTOMATIC
MaterialCOPPER ALLOY SEAT
Nominal Pipe Size Accommodated0.500 INCHES ALL ENDS IN
Connection StylePLAIN (PIPE) ALL ENDS
Bonnet Attachment MethodBOLTED
MaterialCOPPER ALLOY BODY
Connection TypeTHREADED EXTERNAL PIPE ALL ENDS
Maximum Operating Temp250.0 FAHRENHEIT SINGLE RESPONSE DEGF
Thread Series DesignatorNPT ALL ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-155-738272-6970-801 INTERCHANGEABLE
Bearing,roller,cylindrical
Fairbanks Morse, Llc
4820-00-221-5633R400-3/8 INTERCHANGEABLE
Valve,float
Robert Manufacturing Company Inc
4320-00-289-5965C144A INTERCHANGEABLE
Ring,wearing
Circor Naval Solutions Llc Dba Warren Pumps
6140-00-921-3670C18.2M 1.2K4 INTERCHANGEABLE
Battery,storage
Sae International Dba Sae International
4820-01-077-3948R400-1 INTERCHANGEABLE
Valve,float
Robert Manufacturing Company Inc
6350-01-243-0588SPIIM INTERCHANGEABLE
Alarm,personal Distress
Grace Industries, Inc.
5945-01-282-7201R400 INTERCHANGEABLE
Relay,electromagnetic
Psg Controls, Inc.
6130-01-462-5927121834-001 INTERCHANGEABLE
Power Supply
Marathonnorco Aerospace, Inc. Dba Christie Electric
7035-01-592-6912R400 INTERCHANGEABLE
Remote Control,instrument-Equipm
Logitech Inc
1270-01-627-9036R400 INTERCHANGEABLE
Receiver-Transmitter,laser
Logitech Inc.
Cross-Reference Index
Part NumberManufacturer
R400 1-2 Robert Manufacturing Company Inc (USA)
R400-1/2 PRIMARY Robert Manufacturing Company Inc (USA)
4652K12 Mcmaster-Carr Supply Co (USA)
R400 Robert Manufacturing Company Inc (USA)
Related Parts
3110-00-155-7382INTERCHANGEABLE
BEARING,ROLLER,CYLINDRICAL
72-6970-801
4820-00-221-5633INTERCHANGEABLE
VALVE,FLOAT
R400-3/8
4320-00-289-5965INTERCHANGEABLE
RING,WEARING
C144A
6140-00-921-3670INTERCHANGEABLE
BATTERY,STORAGE
C18.2M 1.2K4
4820-01-077-3948INTERCHANGEABLE
VALVE,FLOAT
R400-1
6350-01-243-0588INTERCHANGEABLE
ALARM,PERSONAL DISTRESS
SPIIM
5945-01-282-7201INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
R400
6130-01-462-5927INTERCHANGEABLE
POWER SUPPLY
121834-001
7035-01-592-6912INTERCHANGEABLE
REMOTE CONTROL,INSTRUMENT-EQUIPM
R400
1270-01-627-9036INTERCHANGEABLE
RECEIVER-TRANSMITTER,LASER
R400
5895-01-653-4181INTERCHANGEABLE
SELECTOR,RECEIVER SIGNAL
R400
6665-01-693-8421INTERCHANGEABLE
RADIACMETER
R400

Frequently Asked Questions

What is NSN 4820-00-269-7064?

NSN 4820-00-269-7064 is a Valve,float, manufactured by Robert Manufacturing Company Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-269-7064?

NSN 4820-00-269-7064 has 4 cross-referenced part numbers: R400 1-2 (Robert Manufacturing Company Inc), R400-1/2 (Robert Manufacturing Company Inc), 4652K12 (Mcmaster-Carr Supply Co), R400 (Robert Manufacturing Company Inc).

What NSN replaces 4820-00-269-7064?

There are 12 known substitutes for 4820-00-269-7064: 3110-00-155-7382, 4820-00-221-5633, 4320-00-289-5965 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of R400-1/2?

Key specifications for R400-1/2: Media for Which Designed: WATER, FRESH SINGLE RESPONSE; Nominal Thread Size: 0.500 INCHES ALL ENDS IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE; Operating Pressure: 100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. 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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