PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M1415-2-DCSeat,valve

Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc · NSN 4820-00-868-2588 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-868-2588 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-868-2588. Primary manufacturer part number: M1415-2-DC.
Features
  • Seat,valve — FSC 4820
  • Body Inside Diameter: 0.438 INCHES NOMINAL IN
  • Seating Surface Shape: FLAT
  • Body Outside Diameter: 1.125 INCHES NOMINAL IN
  • Flange Diameter: 1.188 INCHES NOMINAL IN
  • Under Flange Height: 0.219 INCHES NOMINAL IN
  • Style Designator: PLAIN FLANGED
  • Material: STEEL CORROSION RESISTING OVERALL
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-868-2588, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-868-2588
Primary Part NumberM1415-2-DC
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerDerbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc
StatusCANCELLED
Body Inside Diameter0.438 INCHES NOMINAL IN
Seating Surface ShapeFLAT
Body Outside Diameter1.125 INCHES NOMINAL IN
Flange Diameter1.188 INCHES NOMINAL IN
Under Flange Height0.219 INCHES NOMINAL IN
Style DesignatorPLAIN FLANGED
MaterialSTEEL CORROSION RESISTING OVERALL
Flange Seat to Disk End Height0.063 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
5330-00-316-3403 INTERCHANGEABLE
Packing,preformed
5330-00-332-3445 INTERCHANGEABLE
Retainer,packing
4810-01-051-1941 INTERCHANGEABLE
Seat,valve
4820-01-145-7750 INTERCHANGEABLE
Disk and Guide Assembly
4820-01-145-7755 INTERCHANGEABLE
Stem,fluid Valve
5330-01-146-1407 INTERCHANGEABLE
Retainer,packing
5331-01-232-4059 INTERCHANGEABLE
O-Ring
5950-01-408-0585233188-1 INTERCHANGEABLE
Coil,electrical
Cubic Defense Applications, Inc.
4820-01-612-8955 INTERCHANGEABLE
Seat,valve
Cross-Reference Index
Part NumberManufacturer
233188PCPC6 Marotta Controls Inc (USA)
M1415-2-DC PRIMARY Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc (USA)
516759-204 Naval Air Warfare Center Aircraft Division Joint Base Jbmdl (USA)
C-8384ITEM6 Admiral Valve Llc Dba Cpv Manufacturing (USA)
4997207 Marotta Controls Inc (USA)
233188-1 Marotta Controls Inc (USA)
233188-1 ITEM 6 Marotta Controls Inc (USA)
235716-0001ITEM6 Marotta Controls Inc (USA)
B-5415 Admiral Valve Llc Dba Cpv Manufacturing (USA)
025462DC PRIMARY Admiral Valve Llc Dba Cpv Manufacturing (USA)
180P1042 Admiral Valve Llc Dba Cpv Manufacturing (USA)
Related Parts
5330-00-316-3403INTERCHANGEABLE
PACKING,PREFORMED
5330-00-332-3445INTERCHANGEABLE
RETAINER,PACKING
4810-01-051-1941INTERCHANGEABLE
SEAT,VALVE
4820-01-145-7750INTERCHANGEABLE
DISK AND GUIDE ASSEMBLY
4820-01-145-7755INTERCHANGEABLE
STEM,FLUID VALVE
5330-01-146-1407INTERCHANGEABLE
RETAINER,PACKING
5331-01-232-4059INTERCHANGEABLE
O-RING
5950-01-408-0585INTERCHANGEABLE
COIL,ELECTRICAL
233188-1
4820-01-612-8955INTERCHANGEABLE
SEAT,VALVE

Frequently Asked Questions

What is NSN 4820-00-868-2588?

NSN 4820-00-868-2588 is a Seat,valve, manufactured by Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-868-2588?

NSN 4820-00-868-2588 has 11 cross-referenced part numbers: 233188PCPC6 (Marotta Controls Inc), M1415-2-DC (Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc), 516759-204 (Naval Air Warfare Center Aircraft Division Joint Base Jbmdl), C-8384ITEM6 (Admiral Valve Llc Dba Cpv Manufacturing), 4997207 (Marotta Controls Inc) and 6 more.

What NSN replaces 4820-00-868-2588?

There are 9 known substitutes for 4820-00-868-2588: 5330-00-316-3403, 5330-00-332-3445, 4810-01-051-1941 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M1415-2-DC?

Key specifications for M1415-2-DC: Body Inside Diameter: 0.438 INCHES NOMINAL IN; Seating Surface Shape: FLAT; Body Outside Diameter: 1.125 INCHES NOMINAL IN; Flange Diameter: 1.188 INCHES NOMINAL IN. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-868-2588 still in active supply?

NSN 4820-00-868-2588 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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