PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A-A-50458-1/2-1Valve,radiator,heating

Federal Commercial Item Description Promulgated by General Services Administration Washington DC · NSN 4520-00-540-4215 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-00-540-4215 — this item is cataloged by the U.S. Government under National Stock Number 4520-00-540-4215. Primary manufacturer part number: A-A-50458-1/2-1.
Features
  • Valve,radiator,heating — FSC 4520
  • Material: COPPER ALLOY BODY
  • Media for Which Designed: STEAM
  • Nondefinitive Spec/std Data: 2 TYPE AND C STYLE AND 25 CLASS AND SZ1/2 IN. SIZE AND 1 PATTERN AND 1 SERVICE IN
  • Material: COPPER ALLOY SEAT
  • Material: COPPER ALLOY STEM
  • Second End Connection Type: THREADED EXTERNAL PIPE
  • Body Style: STRAIGHT THRU
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Body construction
General Description

The Valve,radiator,heating, cataloged under National Stock Number 4520-00-540-4215, 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 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4520-00-540-4215
Primary Part NumberA-A-50458-1/2-1
Item NameValve,radiator,heating
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerFederal Commercial Item Description Promulgated by General Services Administration Washington DC
StatusACTIVE
MaterialCOPPER ALLOY BODY
Media for Which DesignedSTEAM
Nondefinitive Spec/std Data2 TYPE AND C STYLE AND 25 CLASS AND SZ1/2 IN. SIZE AND 1 PATTERN AND 1 SERVICE IN
MaterialCOPPER ALLOY SEAT
MaterialCOPPER ALLOY STEM
Second End Connection TypeTHREADED EXTERNAL PIPE
Body StyleSTRAIGHT THRU
First End Style DesignatorPLAIN
Second End Nominal Pipe Size Accommodated0.500 INCHES IN
Operating Pressure25.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
Valve Operation MethodWHEEL
Flow Control DeviceDISK, TOP GUIDED
End Connection Quantity2
Second End Style DesignatorPLAIN
Second End Relationship with First EndNOT IDENTICAL
Second End Thread DirectionRIGHT-HAND
First End Thread DirectionRIGHT-HAND
First End Nominal Pipe Size Accommodated0.500 INCHES IN
First End Connection TypeTHREADED INTERNAL PIPE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
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
4520-00-222-3481 INTERCHANGEABLE
Valve,radiator,heating
4520-00-222-3483 INTERCHANGEABLE
Valve,radiator,heating
4520-00-540-4206 INTERCHANGEABLE
Valve,radiator,heating
4520-00-540-4214 INTERCHANGEABLE
Valve,radiator,heating
4520-00-720-4735 INTERCHANGEABLE
Valve,radiator,heating
Cross-Reference Index
Part NumberManufacturer
A-A-50458-1/2-1 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
WWV160 Federal Specifications 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
4520-00-222-3481INTERCHANGEABLE
VALVE,RADIATOR,HEATING
4520-00-222-3483INTERCHANGEABLE
VALVE,RADIATOR,HEATING
4520-00-540-4206INTERCHANGEABLE
VALVE,RADIATOR,HEATING
4520-00-540-4214INTERCHANGEABLE
VALVE,RADIATOR,HEATING
4520-00-720-4735INTERCHANGEABLE
VALVE,RADIATOR,HEATING
4520-00-720-4736INTERCHANGEABLE
VALVE,RADIATOR,HEATING

Frequently Asked Questions

What is NSN 4520-00-540-4215?

NSN 4520-00-540-4215 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 4520-00-540-4215?

NSN 4520-00-540-4215 has 2 cross-referenced part numbers: A-A-50458-1/2-1 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), WWV160 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 4520-00-540-4215?

There are 11 known substitutes for 4520-00-540-4215: 4520-00-204-0693, 4520-00-222-3475, 4520-00-222-3476 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A-A-50458-1/2-1?

Key specifications for A-A-50458-1/2-1: Material: COPPER ALLOY BODY; Media for Which Designed: STEAM; Nondefinitive Spec/std Data: 2 TYPE AND C STYLE AND 25 CLASS AND SZ1/2 IN. SIZE AND 1 PATTERN AND 1 SERVICE IN; Material: COPPER ALLOY SEAT. 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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