PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

500-125LB 1NPTValve,gate

William Powell Company, the Dba Powell Valve Div the Starflo Corporation · NSN 4820-01-248-7149 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-248-7149 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-248-7149. Primary manufacturer part number: 500-125LB 1NPT.
Features
  • Valve,gate — FSC 4820
  • Valve Operation Method: MANUAL
  • Material Document and Classification: ASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE BODY
  • Valve Size: 1.000 INCHES IN
  • Stem Type: RISING
  • Inlet Relationship with Outlet: IDENTICAL
  • Thread Series Designator: NPT
  • Operating Pressure and Type: 125.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 200.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy 836 Body construction
General Description

The Valve,gate, cataloged under National Stock Number 4820-01-248-7149, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is William Powell Company, the Dba Powell Valve Div the Starflo Corporation. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-01-248-7149
Primary Part Number500-125LB 1NPT
Item NameValve,gate
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerWilliam Powell Company, the Dba Powell Valve Div the Starflo Corporation
StatusCANCELLED
Valve Operation MethodMANUAL
Material Document and ClassificationASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE BODY
Valve Size1.000 INCHES IN
Stem TypeRISING
Inlet Relationship with OutletIDENTICAL
Thread Series DesignatorNPT
Operating Pressure and Type125.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 200.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
Bonnet TypeINSIDE SCREW
Pressure ClassERR-060
Material Document and ClassificationASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE DISK
Connection TypeTHREADED INTERNAL PIPE
MaterialCOPPER ALLOY 836 BODY
Material Document and ClassificationASTM B62 ASSN STD SINGLE MATERIAL RESPONSE SEAT
Nominal Thread Size1.000 INCHES IN
Features ProvidedBONNET PACKING
MaterialCOPPER ALLOY STEM
MaterialCOPPER ALLOY 836 SEAT
Material Document and ClassificationASTM WPC ALLOY 69 ASSN STD SINGLE MATERIAL RESPONSE STEM
MaterialCOPPER ALLOY 836 DISK
Bonnet Attachment MethodTHREADED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
5305-00-014-087954252 INTERCHANGEABLE
Setscrew
Am General Llc
4820-00-202-7415432 3-4 INTERCHANGEABLE
Valve,gate
Crane Co Div Valve Div
4730-00-223-9260AS4863D08 INTERCHANGEABLE
Plug,pipe
Sae International Dba Sae International
6110-00-679-0989SM-C-103618 INTERCHANGEABLE
Regulator,voltage
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4820-00-850-8561 INTERCHANGEABLE
Valve,gate
5998-00-915-8986 INTERCHANGEABLE
Circuit Card Assembly
7510-01-300-2124BT818-1 INTERCHANGEABLE
Tape,pressure Sensitive Adhesive
Bron Tapes of Colorado Inc.
Cross-Reference Index
Part NumberManufacturer
WWV54 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
FIG430 Crane Co Div Valve Div (USA)
500-125LB 1NPT PRIMARY William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
NO. 430 N.P.S. 1 IN. PRIMARY Crane Co Div Valve Div (USA)
101 The Walworth Company (USA)
500 1IN PRIMARY William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
B100-1 Stockham Valves and Fittings Inc (USA)
5 Walworth Co Marine Div (USA)
Related Parts
5305-00-014-0879INTERCHANGEABLE
SETSCREW
54252
4820-00-202-7415INTERCHANGEABLE
VALVE,GATE
432 3-4
4730-00-223-9260INTERCHANGEABLE
PLUG,PIPE
AS4863D08
6110-00-679-0989INTERCHANGEABLE
REGULATOR,VOLTAGE
SM-C-103618
4820-00-850-8561INTERCHANGEABLE
VALVE,GATE
5998-00-915-8986INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
7510-01-300-2124INTERCHANGEABLE
TAPE,PRESSURE SENSITIVE ADHESIVE
BT818-1

Frequently Asked Questions

What is NSN 4820-01-248-7149?

NSN 4820-01-248-7149 is a Valve,gate, manufactured by William Powell Company, the Dba Powell Valve Div the Starflo Corporation, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-01-248-7149?

NSN 4820-01-248-7149 has 8 cross-referenced part numbers: WWV54 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), FIG430 (Crane Co Div Valve Div), 500-125LB 1NPT (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), NO. 430 N.P.S. 1 IN. (Crane Co Div Valve Div), 101 (The Walworth Company) and 3 more.

What NSN replaces 4820-01-248-7149?

There are 7 known substitutes for 4820-01-248-7149: 5305-00-014-0879, 4820-00-202-7415, 4730-00-223-9260 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 500-125LB 1NPT?

Key specifications for 500-125LB 1NPT: Valve Operation Method: MANUAL; Material Document and Classification: ASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE BODY; Valve Size: 1.000 INCHES IN; Stem Type: RISING. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-01-248-7149 still in active supply?

NSN 4820-01-248-7149 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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