PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FG40Disk,valve

Psg California, Llc Div Dover Corporation · NSN 4820-01-286-0370 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-286-0370 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-286-0370. Primary manufacturer part number: FG40.
Features
  • Disk,valve — FSC 4820
  • Material: RUBBER
  • Inside Diameter: 1.500 INCHES NOMINAL IN
  • Style Designator: PLAIN
  • Outside Diameter: 3.000 INCHES NOMINAL IN
  • 1 verified cross-reference
  • Primary manufacturer: Psg California, Llc Div Dover Corporation
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Rubber construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-286-0370, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Psg California, Llc Div Dover Corporation. Government technical data includes 4 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-286-0370
Primary Part NumberFG40
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerPsg California, Llc Div Dover Corporation
StatusACTIVE
MaterialRUBBER
Inside Diameter1.500 INCHES NOMINAL IN
Style DesignatorPLAIN
Outside Diameter3.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
6210-01-032-0825 INTERCHANGEABLE
Shield,light
4720-01-230-1878380 1-1/4X1-3/4 INTERCHANGEABLE
Tubing,nonmetallic
Nalge Co Div of Sybron Corp
Cross-Reference Index
Part NumberManufacturer
FG40 Psg California, Llc Div Dover Corporation (USA)
Related Parts
6210-01-032-0825INTERCHANGEABLE
SHIELD,LIGHT
4720-01-230-1878INTERCHANGEABLE
TUBING,NONMETALLIC
380 1-1/4X1-3/4

Frequently Asked Questions

What is NSN 4820-01-286-0370?

NSN 4820-01-286-0370 is a Disk,valve, manufactured by Psg California, Llc Div Dover Corporation, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-286-0370?

NSN 4820-01-286-0370 has 1 cross-referenced part number: FG40 (Psg California, Llc Div Dover Corporation).

What NSN replaces 4820-01-286-0370?

There are 2 known substitutes for 4820-01-286-0370: 6210-01-032-0825, 4720-01-230-1878. Verify interchangeability with system specifications before substitution.

What are the specifications of FG40?

Key specifications for FG40: Material: RUBBER; Inside Diameter: 1.500 INCHES NOMINAL IN; Overall Height: 0.250 INCHES NOMINAL IN; Style Designator: PLAIN. 5 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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