PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A-A-50456Valve,radiator,heating

Federal Commercial Item Description Promulgated by General Services Administration Washington DC · NSN 4520-00-222-3482 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-00-222-3482 — this item is cataloged by the U.S. Government under National Stock Number 4520-00-222-3482. Primary manufacturer part number: A-A-50456.
Features
  • Valve,radiator,heating — FSC 4520
  • Nondefinitive Spec/std Data: 100 CLASS AND 1 PATTERN AND A STYLE AND 1 IN. SIZE AND 1 TYPE AND 1 SERVICE IN
  • Media for Which Designed: STEAM
  • Flow Control Device: DISK, TOP GUIDED
  • Body Style: STRAIGHT THRU
  • Second End Nominal Pipe Size Accommodated: 1.000 INCHES IN
  • End Connection Quantity: 2
  • First End Style Designator: PLAIN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy 922 and Copper Alloy 836 Body construction
General Description

The Valve,radiator,heating, cataloged under National Stock Number 4520-00-222-3482, is classified within Federal Supply Class 4520 (No Item Name Available) of the Plumbing, Heating, and Waste Disposal group. The primary manufacturer of record is Federal Commercial Item Description Promulgated by General Services Administration Washington DC. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4520-00-222-3482
Primary Part NumberA-A-50456
Item NameValve,radiator,heating
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerFederal Commercial Item Description Promulgated by General Services Administration Washington DC
StatusACTIVE
Nondefinitive Spec/std Data100 CLASS AND 1 PATTERN AND A STYLE AND 1 IN. SIZE AND 1 TYPE AND 1 SERVICE IN
Media for Which DesignedSTEAM
Flow Control DeviceDISK, TOP GUIDED
Body StyleSTRAIGHT THRU
Second End Nominal Pipe Size Accommodated1.000 INCHES IN
End Connection Quantity2
First End Style DesignatorPLAIN
Second End Connection TypeTHREADED EXTERNAL PIPE
First End Nominal Pipe Size Accommodated1.000 INCHES IN
First End Thread DirectionRIGHT-HAND
Operating Pressure100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
Second End Style DesignatorPLAIN
Second End Relationship with First EndNOT IDENTICAL
First End Connection TypeTHREADED INTERNAL PIPE
Valve Operation MethodWHEEL
Second End Thread DirectionRIGHT-HAND
MaterialCOPPER ALLOY 922 AND COPPER ALLOY 836 BODY
MaterialCOPPER ALLOY 922 AND COPPER ALLOY 836 SEAT
MaterialCOPPER ALLOY STEM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
4520-00-204-0693 INTERCHANGEABLE
Valve,radiator,heating
4520-00-222-3475 INTERCHANGEABLE
Valve,radiator,heating
4520-00-222-3476 INTERCHANGEABLE
Valve,radiator,heating
4520-00-222-3477 INTERCHANGEABLE
Valve,radiator,heating
4520-00-222-3478 INTERCHANGEABLE
Valve,radiator,heating
4520-00-222-3480A-A-50456 INTERCHANGEABLE
Valve,radiator,heating
Federal Commercial Item Description Promulgated by General Services Administration Washington DC
4520-00-222-3481 INTERCHANGEABLE
Valve,radiator,heating
4520-00-277-7504 INTERCHANGEABLE
Valve,radiator,heating
Cross-Reference Index
Part NumberManufacturer
A-A-50456 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
Related Parts
4520-00-204-0693INTERCHANGEABLE
VALVE,RADIATOR,HEATING
4520-00-222-3475INTERCHANGEABLE
VALVE,RADIATOR,HEATING
4520-00-222-3476INTERCHANGEABLE
VALVE,RADIATOR,HEATING
4520-00-222-3477INTERCHANGEABLE
VALVE,RADIATOR,HEATING
4520-00-222-3478INTERCHANGEABLE
VALVE,RADIATOR,HEATING
4520-00-222-3480INTERCHANGEABLE
VALVE,RADIATOR,HEATING
A-A-50456
4520-00-222-3481INTERCHANGEABLE
VALVE,RADIATOR,HEATING
4520-00-277-7504INTERCHANGEABLE
VALVE,RADIATOR,HEATING

Frequently Asked Questions

What is NSN 4520-00-222-3482?

NSN 4520-00-222-3482 is a Valve,radiator,heating, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 4520 (No Item Name Available). Status: active.

What are the part numbers for NSN 4520-00-222-3482?

NSN 4520-00-222-3482 has 1 cross-referenced part number: A-A-50456 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC).

What NSN replaces 4520-00-222-3482?

There are 8 known substitutes for 4520-00-222-3482: 4520-00-204-0693, 4520-00-222-3475, 4520-00-222-3476 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A-A-50456?

Key specifications for A-A-50456: Nondefinitive Spec/std Data: 100 CLASS AND 1 PATTERN AND A STYLE AND 1 IN. SIZE AND 1 TYPE AND 1 SERVICE IN; Media for Which Designed: STEAM; Flow Control Device: DISK, TOP GUIDED; Body Style: STRAIGHT THRU. 19 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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