PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

207781Seat,valve

Marotta Controls Inc · NSN 4820-01-094-2689 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-094-2689 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-094-2689. Primary manufacturer part number: 207781.
Features
  • Seat,valve — FSC 4820
  • Material: PLASTIC POLYAMIDE NYLON SEAT
  • Material: STEEL CORROSION RESISTING BODY
  • Seating Surface Shape: FLAT
  • Style Designator: PLAIN
  • Body Outside Diameter: 0.198 INCHES NOMINAL IN
  • Body Inside Diameter: 0.031 INCHES NOMINAL IN
  • 2 verified cross-references
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Plastic Polyamide Nylon Seat construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-094-2689, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Marotta Controls Inc. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references 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
NSN4820-01-094-2689
Primary Part Number207781
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMarotta Controls Inc
StatusACTIVE
MaterialPLASTIC POLYAMIDE NYLON SEAT
MaterialSTEEL CORROSION RESISTING BODY
Seating Surface ShapeFLAT
Style DesignatorPLAIN
Body Outside Diameter0.198 INCHES NOMINAL IN
Body Inside Diameter0.031 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
1740-00-219-6015207781 INTERCHANGEABLE
Bar Assembly,tow
Lockheed Martin Corp
5910-00-666-680644A103 INTERCHANGEABLE
Capacitor,variable,ceramic Diele
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
Cross-Reference Index
Part NumberManufacturer
207781 PRIMARY Marotta Controls Inc (USA)
281015-0001 ITEM 1 Marotta Controls Inc (USA)
Related Parts
1740-00-219-6015INTERCHANGEABLE
BAR ASSEMBLY,TOW
207781
5910-00-666-6806INTERCHANGEABLE
CAPACITOR,VARIABLE,CERAMIC DIELE
44A103

Frequently Asked Questions

What is NSN 4820-01-094-2689?

NSN 4820-01-094-2689 is a Seat,valve, manufactured by Marotta Controls Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-094-2689?

NSN 4820-01-094-2689 has 2 cross-referenced part numbers: 207781 (Marotta Controls Inc), 281015-0001 ITEM 1 (Marotta Controls Inc).

What NSN replaces 4820-01-094-2689?

There are 2 known substitutes for 4820-01-094-2689: 1740-00-219-6015, 5910-00-666-6806. Verify interchangeability with system specifications before substitution.

What are the specifications of 207781?

Key specifications for 207781: Material: PLASTIC POLYAMIDE NYLON SEAT; Material: STEEL CORROSION RESISTING BODY; Seating Surface Shape: FLAT; Style Designator: PLAIN. 7 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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