PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18.5.50Disk,valve

Emerson Automation Solutions Final Control Us Lp Div Navy Product Team · NSN 4820-01-514-1699 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-514-1699 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-514-1699. Primary manufacturer part number: 18.5.50.
Features
  • Disk,valve — FSC 4820
  • Style Designator: PLUG
  • Thread Series Designator: UNEF
  • Temp Rating: 425.0 FAHRENHEIT MAXIMUM DEGF
  • Outside Diameter: 5.382 INCHES NOMINAL IN
  • Nominal Thread Size: 1.250 INCHES IN
  • Thread Quantity Per Inch: 18
  • Media for Which Designed: WATER, SALT
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy 400 construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-514-1699, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references 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
NSN4820-01-514-1699
Primary Part Number18.5.50
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerEmerson Automation Solutions Final Control Us Lp Div Navy Product Team
StatusACTIVE
Style DesignatorPLUG
Thread Series DesignatorUNEF
Temp Rating425.0 FAHRENHEIT MAXIMUM DEGF
Outside Diameter5.382 INCHES NOMINAL IN
Nominal Thread Size1.250 INCHES IN
Thread Quantity Per Inch18
Media for Which DesignedWATER, SALT
MaterialNICKEL ALLOY 400
Shoulder Width1.706 INCHES NOMINAL IN
Pressure Rating100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
Thread Class2B
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5360-00-664-787611-414 INTERCHANGEABLE
Spring,helical,compression
Thermo King Corporation Dba Phoenix Global Distirbution.
5935-00-666-1434WK6-21C3-8 INTERCHANGEABLE
Connector,plug,electrical
Pei/genesis, Inc. Div Pei Genesis
6625-00-691-650518550 INTERCHANGEABLE
Plate,clamp
Cec Vibration Products, Llc Dba Cec Vibrations Products
4820-01-157-539918550 INTERCHANGEABLE
Valve,safety Relief
Leroi International Inc Dba Compair Leroi
4130-01-459-2412800-48TP240V INTERCHANGEABLE
Vacu-Disc
Dcm Clean Air Products, Inc.
4710-01-496-8480 INTERCHANGEABLE
Tube Assembly,metal
7025-01-499-4333TLS2200 INTERCHANGEABLE
Printer,automatic Data Processin
Brady Worldwide Inc
4820-01-514-175251.5.22 INTERCHANGEABLE
Seat,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
6515-01-573-2840 INTERCHANGEABLE
Steri-Strip
6515-01-587-6297930103 INTERCHANGEABLE
Applicator,disposable
Becton, Dickinson and Co Dba Becton Dickinson & Co
Cross-Reference Index
Part NumberManufacturer
NMP176 L2210-C Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
NMP-176 PC NO 18M Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
18.5.50 PRIMARY Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
Related Parts
5360-00-664-7876INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
11-414
5935-00-666-1434INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
WK6-21C3-8
6625-00-691-6505INTERCHANGEABLE
PLATE,CLAMP
18550
4820-01-157-5399INTERCHANGEABLE
VALVE,SAFETY RELIEF
18550
4130-01-459-2412INTERCHANGEABLE
VACU-DISC
800-48TP240V
4710-01-496-8480INTERCHANGEABLE
TUBE ASSEMBLY,METAL
7025-01-499-4333INTERCHANGEABLE
PRINTER,AUTOMATIC DATA PROCESSIN
TLS2200
4820-01-514-1752INTERCHANGEABLE
SEAT,VALVE
51.5.22
6515-01-573-2840INTERCHANGEABLE
STERI-STRIP
6515-01-587-6297INTERCHANGEABLE
APPLICATOR,DISPOSABLE
930103

Frequently Asked Questions

What is NSN 4820-01-514-1699?

NSN 4820-01-514-1699 is a Disk,valve, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-514-1699?

NSN 4820-01-514-1699 has 3 cross-referenced part numbers: NMP176 L2210-C (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), NMP-176 PC NO 18M (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 18.5.50 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).

What NSN replaces 4820-01-514-1699?

There are 10 known substitutes for 4820-01-514-1699: 5360-00-664-7876, 5935-00-666-1434, 6625-00-691-6505 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18.5.50?

Key specifications for 18.5.50: Style Designator: PLUG; Thread Series Designator: UNEF; Temp Rating: 425.0 FAHRENHEIT MAXIMUM DEGF; Outside Diameter: 5.382 INCHES NOMINAL IN. 12 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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