PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

206-1/2Valve,gate

Red-White Valve Corp. · NSN 4820-01-189-2104 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-189-2104 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-189-2104. Primary manufacturer part number: 206-1/2.
Features
  • Valve,gate — FSC 4820
  • Valve Size: 0.500 INCHES IN
  • Inlet Relationship with Outlet: IDENTICAL
  • Thread Series Designator: NPT
  • Material: COPPER ALLOY BODY
  • Stem Type: NONRISING
  • Nominal Thread Size: 0.500 INCHES IN
  • 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 Body construction
General Description

The Valve,gate, cataloged under National Stock Number 4820-01-189-2104, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Red-White Valve Corp.. Government technical data includes 14 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-189-2104
Primary Part Number206-1/2
Item NameValve,gate
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerRed-White Valve Corp.
StatusACTIVE
Valve Size0.500 INCHES IN
Inlet Relationship with OutletIDENTICAL
Thread Series DesignatorNPT
MaterialCOPPER ALLOY BODY
Stem TypeNONRISING
Nominal Thread Size0.500 INCHES IN
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
Valve Operation MethodMANUAL
Connection TypeTHREADED INTERNAL PIPE
MaterialCOPPER ALLOY STEM
Bonnet TypeINSIDE SCREW
MaterialCOPPER ALLOY SEAT
Bonnet Attachment MethodTHREADED
MaterialCOPPER ALLOY DISK
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5133-00-227-9672 INTERCHANGEABLE
Drill,twist
4820-00-393-434720612 INTERCHANGEABLE
Seat,valve
Ashcroft Inc Dba Heise
5365-00-784-5826 INTERCHANGEABLE
Shim
4720-00-888-6075 INTERCHANGEABLE
Hose,nonmetallic
4820-00-922-008920512 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Fairchild Industrial Products Company
2815-01-118-396719936 INTERCHANGEABLE
Engine Block,diesel
Westerbeke Corporation
4720-01-141-395120612 INTERCHANGEABLE
Hose,preformed
Gates Corporation
5975-01-367-9587206-12 INTERCHANGEABLE
Conduit Assembly,metal,flexible
Dcx-Chol Enterprises, Inc.
7490-01-390-600120612 INTERCHANGEABLE
Shredding Machine,paper
Dahle Usa
6515-01-483-965820612 INTERCHANGEABLE
Brace,ankle
Royce Medical Company Dba Centec Orthopedics
Cross-Reference Index
Part NumberManufacturer
206-1/2 PRIMARY Red-White Valve Corp. (USA)
Related Parts
5133-00-227-9672INTERCHANGEABLE
DRILL,TWIST
4820-00-393-4347INTERCHANGEABLE
SEAT,VALVE
20612
5365-00-784-5826INTERCHANGEABLE
SHIM
4720-00-888-6075INTERCHANGEABLE
HOSE,NONMETALLIC
4820-00-922-0089INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
20512
2815-01-118-3967INTERCHANGEABLE
ENGINE BLOCK,DIESEL
19936
4720-01-141-3951INTERCHANGEABLE
HOSE,PREFORMED
20612
5975-01-367-9587INTERCHANGEABLE
CONDUIT ASSEMBLY,METAL,FLEXIBLE
206-12
7490-01-390-6001INTERCHANGEABLE
SHREDDING MACHINE,PAPER
20612
6515-01-483-9658INTERCHANGEABLE
BRACE,ANKLE
20612

Frequently Asked Questions

What is NSN 4820-01-189-2104?

NSN 4820-01-189-2104 is a Valve,gate, manufactured by Red-White Valve Corp., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-189-2104?

NSN 4820-01-189-2104 has 1 cross-referenced part number: 206-1/2 (Red-White Valve Corp.).

What NSN replaces 4820-01-189-2104?

There are 10 known substitutes for 4820-01-189-2104: 5133-00-227-9672, 4820-00-393-4347, 5365-00-784-5826 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 206-1/2?

Key specifications for 206-1/2: Valve Size: 0.500 INCHES IN; Inlet Relationship with Outlet: IDENTICAL; Thread Series Designator: NPT; Material: COPPER ALLOY BODY. 14 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com