PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A-50498-BZ-1-CValve,foot

Federal Commercial Item Description Promulgated by General Services Administration Washington DC · NSN 4820-00-227-0154 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-227-0154 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-227-0154. Primary manufacturer part number: A-50498-BZ-1-C.
Features
  • Valve,foot — FSC 4820
  • Material Document and Classification: QQ-B-626,COMP 1 FED SPEC SINGLE MATERIAL RESPONSE SEAT
  • Material: COPPER ALLOY SEAT
  • First End Nominal Pipe Size Accommodated: 1.000 INCHES IN
  • Flow Control Device: POPPET
  • Body Style: LOW OR MEDIUM PRESSURE (SCREWED)
  • Renewable Seat Ring Type: THREADED
  • First End Connection Type: THREADED INTERNAL PIPE
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Seat construction
General Description

The Valve,foot, cataloged under National Stock Number 4820-00-227-0154, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Federal Commercial Item Description Promulgated by General Services Administration Washington DC. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-227-0154
Primary Part NumberA-50498-BZ-1-C
Item NameValve,foot
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerFederal Commercial Item Description Promulgated by General Services Administration Washington DC
StatusCANCELLED
Material Document and ClassificationQQ-B-626,COMP 1 FED SPEC SINGLE MATERIAL RESPONSE SEAT
MaterialCOPPER ALLOY SEAT
First End Nominal Pipe Size Accommodated1.000 INCHES IN
Flow Control DevicePOPPET
Body StyleLOW OR MEDIUM PRESSURE (SCREWED)
Renewable Seat Ring TypeTHREADED
First End Connection TypeTHREADED INTERNAL PIPE
First End Style DesignatorPLAIN
End Connection Quantity1
First End Thread DirectionRIGHT-HAND
MaterialCOPPER ALLOY FLOW CONTROL DEVICE
Body MaterialCOPPER ALLOY 268
Material Document and ClassificationQQ-B-626,COMP 1 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
Operating Pressure175.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
Nondefinitive Spec/std Data1.000 1N SIZE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5905-00-088-09392100-0077 INTERCHANGEABLE
Resistor,variable,wire Wound,non
Keysight Technologies Inc
3110-00-100-0304394 INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
4820-00-227-0155 INTERCHANGEABLE
Valve,foot
4820-00-227-0156 INTERCHANGEABLE
Valve,foot
4820-00-227-0157 INTERCHANGEABLE
Valve,foot
3030-00-269-9707394 INTERCHANGEABLE
Belt,v
Contitech Usa, Inc Dba Veyance Technologies
4820-00-273-9734 INTERCHANGEABLE
Valve,foot
4820-00-273-9735394-6 INTERCHANGEABLE
Valve,foot
Crane Co Div Valve Div
4820-00-273-9736 INTERCHANGEABLE
Valve,foot
4820-00-288-7164 INTERCHANGEABLE
Valve,foot
Cross-Reference Index
Part NumberManufacturer
A-50498-BZ-1-C Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
A-A-50498 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
MILV16720 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
394 Crane Co Div Valve Div (USA)
Related Parts
5905-00-088-0939INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
2100-0077
3110-00-100-0304INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
394
4820-00-227-0155INTERCHANGEABLE
VALVE,FOOT
4820-00-227-0156INTERCHANGEABLE
VALVE,FOOT
4820-00-227-0157INTERCHANGEABLE
VALVE,FOOT
3030-00-269-9707INTERCHANGEABLE
BELT,V
394
4820-00-273-9734INTERCHANGEABLE
VALVE,FOOT
4820-00-273-9735INTERCHANGEABLE
VALVE,FOOT
394-6
4820-00-273-9736INTERCHANGEABLE
VALVE,FOOT
4820-00-288-7164INTERCHANGEABLE
VALVE,FOOT
4820-00-288-7349INTERCHANGEABLE
VALVE,FOOT
3120-00-406-0107INTERCHANGEABLE
BEARING,WASHER,THRUST
394

Frequently Asked Questions

What is NSN 4820-00-227-0154?

NSN 4820-00-227-0154 is a Valve,foot, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-227-0154?

NSN 4820-00-227-0154 has 4 cross-referenced part numbers: A-50498-BZ-1-C (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), A-A-50498 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), MILV16720 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 394 (Crane Co Div Valve Div).

What NSN replaces 4820-00-227-0154?

There are 12 known substitutes for 4820-00-227-0154: 5905-00-088-0939, 3110-00-100-0304, 4820-00-227-0155 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A-50498-BZ-1-C?

Key specifications for A-50498-BZ-1-C: Material Document and Classification: QQ-B-626,COMP 1 FED SPEC SINGLE MATERIAL RESPONSE SEAT; Material: COPPER ALLOY SEAT; First End Nominal Pipe Size Accommodated: 1.000 INCHES IN; Flow Control Device: POPPET. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-227-0154 still in active supply?

NSN 4820-00-227-0154 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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