PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1769Seat,valve

Droitcour Co · NSN 4820-01-415-9535 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-415-9535 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-415-9535. Primary manufacturer part number: 1769.
Features
  • Seat,valve — FSC 4820
  • Body Outside Diameter: 0.233 INCHES NOMINAL IN
  • Seating Surface Shape: FLAT
  • Style Designator: PLAIN FLANGED
  • Material: STEEL COMP 440C OVERALL
  • Flange Seat to Disk End Height: 0.141 INCHES NOMINAL IN
  • Under Flange Height: 0.093 INCHES NOMINAL IN
  • Body Inside Diameter: 0.103 INCHES NOMINAL IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Comp 440c Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-415-9535, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Droitcour Co. Government technical data includes 8 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-415-9535
Primary Part Number1769
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerDroitcour Co
StatusACTIVE
Body Outside Diameter0.233 INCHES NOMINAL IN
Seating Surface ShapeFLAT
Style DesignatorPLAIN FLANGED
MaterialSTEEL COMP 440C OVERALL
Flange Seat to Disk End Height0.141 INCHES NOMINAL IN
Under Flange Height0.093 INCHES NOMINAL IN
Body Inside Diameter0.103 INCHES NOMINAL IN
Flange Diameter0.281 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-155-8957177039-14 INTERCHANGEABLE
Bearing,ball,annular
Naval Sea Systems Command
6645-00-250-46806645002504680 INTERCHANGEABLE
Stopwatch
General Services Administration Federal Supply Service
2990-00-254-995489033 INTERCHANGEABLE
Muffler,exhaust
Briggs and Stratton Corp
6810-00-262-8573 INTERCHANGEABLE
Ferrous Sulfate,heptahydrate
6810-00-262-8574 INTERCHANGEABLE
Calcium Fluoride
6810-00-264-6534 INTERCHANGEABLE
Ferrous Sulfate,heptahydrate
6240-00-270-4697288A896BEP3 INTERCHANGEABLE
Lamp,incandescent
General Electric Company Dba Ge
5905-00-279-781310F35000 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Ward Leonard Ct Llc
4820-00-582-25201769 INTERCHANGEABLE
Diaphragm,valve,flat
Imi Cash Valve Inc
5905-00-856-44671769 INTERCHANGEABLE
Resistor,fixed,wire Wound
Ballantine Laboratories Inc
Cross-Reference Index
Part NumberManufacturer
1769 PRIMARY Droitcour Co (USA)
2253-1 ITEM 14 Droitcour Co (USA)
Related Parts
3110-00-155-8957INTERCHANGEABLE
BEARING,BALL,ANNULAR
177039-14
6645-00-250-4680INTERCHANGEABLE
STOPWATCH
6645002504680
2990-00-254-9954INTERCHANGEABLE
MUFFLER,EXHAUST
89033
6810-00-262-8573INTERCHANGEABLE
FERROUS SULFATE,HEPTAHYDRATE
6810-00-262-8574INTERCHANGEABLE
CALCIUM FLUORIDE
6810-00-264-6534INTERCHANGEABLE
FERROUS SULFATE,HEPTAHYDRATE
6240-00-270-4697INTERCHANGEABLE
LAMP,INCANDESCENT
288A896BEP3
5905-00-279-7813INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
10F35000
4820-00-582-2520INTERCHANGEABLE
DIAPHRAGM,VALVE,FLAT
1769
5905-00-856-4467INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
1769
2920-00-961-8262INTERCHANGEABLE
REGULATOR,ENGINE GENERATOR
9000590
5330-01-085-3260INTERCHANGEABLE
GASKET
71309-A

Frequently Asked Questions

What is NSN 4820-01-415-9535?

NSN 4820-01-415-9535 is a Seat,valve, manufactured by Droitcour Co, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-415-9535?

NSN 4820-01-415-9535 has 2 cross-referenced part numbers: 1769 (Droitcour Co), 2253-1 ITEM 14 (Droitcour Co).

What NSN replaces 4820-01-415-9535?

There are 12 known substitutes for 4820-01-415-9535: 3110-00-155-8957, 6645-00-250-4680, 2990-00-254-9954 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1769?

Key specifications for 1769: Body Outside Diameter: 0.233 INCHES NOMINAL IN; Seating Surface Shape: FLAT; Style Designator: PLAIN FLANGED; Material: STEEL COMP 440C OVERALL. 9 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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