PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4 1 1/4Valve,gate

The Walworth Company · NSN 4820-01-354-5496 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-354-5496 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-354-5496. Primary manufacturer part number: 4 1 1/4.
Features
  • Valve,gate — FSC 4820
  • Bonnet Attachment Method: THREADED
  • Material: COPPER ALLOY STEM
  • Nominal Thread Size: 0.250 INCHES IN
  • Material: COPPER ALLOY 863 DISK
  • Stem Type: NONRISING
  • Pressure Class: ERR-060
  • Operating Pressure and Type: 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 Stem construction
General Description

The Valve,gate, cataloged under National Stock Number 4820-01-354-5496, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is The Walworth Company. Government technical data includes 16 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-354-5496
Primary Part Number4 1 1/4
Item NameValve,gate
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerThe Walworth Company
StatusACTIVE
Bonnet Attachment MethodTHREADED
MaterialCOPPER ALLOY STEM
Nominal Thread Size0.250 INCHES IN
MaterialCOPPER ALLOY 863 DISK
Stem TypeNONRISING
Pressure ClassERR-060
Operating Pressure and Type200.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
Thread Series DesignatorNPT
Maximum Operating Temp and Media for Which Designed406.0 FAHRENHEIT WATER-OIL-GAS DEGF
Valve Size1.250 INCHES IN
Connection TypeTHREADED INTERNAL PIPE
Inlet Relationship with OutletIDENTICAL
Valve Operation MethodHYDRAULIC
MaterialCOPPER ALLOY 863 BODY
Bonnet TypeINSIDE SCREW
MaterialCOPPER ALLOY SEAT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4320-00-147-1733230-8004002-202 INTERCHANGEABLE
Weight,valve,pump
Carver Pump Company
5120-00-189-7924 INTERCHANGEABLE
Socket,socket Wrench
5120-00-224-3156 INTERCHANGEABLE
Wrench,open End Box
5120-00-237-4956 INTERCHANGEABLE
Punch,center,solid
3940-00-368-2891S8101-1008936 INTERCHANGEABLE
Block,tackle
Naval Ship Systems Command
2040-00-391-4442 INTERCHANGEABLE
Fairwater
5355-00-755-14224114 INTERCHANGEABLE
Knob
Wakmann Watch Company Inc
5330-01-019-6879Q4114-366Y INTERCHANGEABLE
Packing,preformed
Minnesota Rubber Co
5305-01-149-6095 INTERCHANGEABLE
Screw,machine
5940-01-222-89444-114 INTERCHANGEABLE
Terminal,lug
Raytheon Company Dba Raytheon Co
Cross-Reference Index
Part NumberManufacturer
4 1 1/4 PRIMARY The Walworth Company (USA)
Related Parts
4320-00-147-1733INTERCHANGEABLE
WEIGHT,VALVE,PUMP
230-8004002-202
5120-00-189-7924INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-224-3156INTERCHANGEABLE
WRENCH,OPEN END BOX
5120-00-237-4956INTERCHANGEABLE
PUNCH,CENTER,SOLID
3940-00-368-2891INTERCHANGEABLE
BLOCK,TACKLE
S8101-1008936
2040-00-391-4442INTERCHANGEABLE
FAIRWATER
5355-00-755-1422INTERCHANGEABLE
KNOB
4114
5330-01-019-6879INTERCHANGEABLE
PACKING,PREFORMED
Q4114-366Y
5305-01-149-6095INTERCHANGEABLE
SCREW,MACHINE
5940-01-222-8944INTERCHANGEABLE
TERMINAL,LUG
4-114
5120-01-335-9024INTERCHANGEABLE
SOCKET,SOCKET WRENCH
4114
4720-01-397-8282INTERCHANGEABLE
TUBING,NONMETALLIC

Frequently Asked Questions

What is NSN 4820-01-354-5496?

NSN 4820-01-354-5496 is a Valve,gate, manufactured by The Walworth Company, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-354-5496?

NSN 4820-01-354-5496 has 1 cross-referenced part number: 4 1 1/4 (The Walworth Company).

What NSN replaces 4820-01-354-5496?

There are 12 known substitutes for 4820-01-354-5496: 4320-00-147-1733, 5120-00-189-7924, 5120-00-224-3156 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4 1 1/4?

Key specifications for 4 1 1/4: Bonnet Attachment Method: THREADED; Material: COPPER ALLOY STEM; Nominal Thread Size: 0.250 INCHES IN; Material: COPPER ALLOY 863 DISK. 16 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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