NSN 4820-01-442-0439
Valve Seat Insert
About this product
A/k/a seat, lower.
Manufacturer part number 218020209 for national stock number 4820014420439.
Datasheet
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Product description
Valve Seat NSN 4820-01-442-0439.
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MPN or Model
218020209
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Schedule B
8481.90.9090 (Parts of taps, cocks, valves and similar appliances, nesoi) -
NMF (National Motor Freight)
051080 - Faucets, Bibcocks, Gates Valves -
Unit Weight (Est.)
0.2 lb -
Thread Class
3a single threaded portion -
Thread Length
0.752 inches single threaded portion -
Overall Height
1.375 inches -
Body Outside Diameter
5.140 inches -
Body Inside Diameter
4.625 inches -
End Application
Seawolf class ssn -
Thready Qty Per Inch (tpi)
12 single threaded portion -
Hardness Rating
115.0 rockwell r seat -
Thread Size
5.250 inches single threaded portion -
Seating Surface Shape
Flat -
Material
Plastic polytetrafluoroethylene seat -
Style Designator
Plain -
Thread Series Designator
Un single threaded portion
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Valve Seat
A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see insert, engine valve seat.
![Mechanic Bill explains Valve Seat Insert](/public/images/billy-thinking.png)
Pricing and Availability
Get a quote for 4820-01-442-0439 valve seatManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
---|---|
218020209 | Naval Sea Systems Command |
801-6556655 FIND A6 | Naval Sea Systems Command |
801-6556655-A6 | Naval Sea Systems Command |
2643-1002-63 FN A6 | Electric Boat Corporation |
2643-1002-63 | Electric Boat Corporation |
6556655 | Naval Sea Systems Command |
218020209 | Naval Sea Systems Command |
801-6556655 FIND A6 | Naval Sea Systems Command |
801-6556655-A6 | Naval Sea Systems Command |
2643-1002-63 FN A6 | Electric Boat Corporation |
6556655 | Naval Sea Systems Command |
2643-1002-63 | Electric Boat Corporation |
Stock Check
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