81S68-8 2750PSIG

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-102-8512

Item Name Code

05488

Assigment Date

10/29/1980 (45 years ago)

right-hand 1st end thread direction, poppet flow control device, integral bonnet attachment method, right-hand 2nd end thread direction, inside spring bonnet type

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: poppet
Bonnet Type: inside spring
Bonnet Attachment Method: integral
Disk Loading Method: spring
Maximum Operating Temp: 450.0 celsius single response
Connection Style: plain,optional end(pipe) 2nd end
Valve Operation Method: automatic
Connection Type: threaded internal pipe 1st end
Connection Type: threaded internal pipe 2nd end
Maximum Operating Pressure: 10000.0 pounds per square inch single response
Nominal Thread Size: 0.750 inches 1st end
Nominal Thread Size: 1.000 inches 2nd end
Opening Pressure Setting: 2750.0 pounds per square inch
Material: plastic polytetrafluoroethylene seat
Material: steel body
Material: steel comp 316 flow control device
Material Document And Classification: aisi 316 assn std single material response flow control device
Material Document And Classification: astm a351,grade cf8m assn std single material response body
Style Designator: angle
Thread Series Designator: npt 2nd end
Thread Series Designator: npt 1st end

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
81S68-8 2750PSIG	Safety Relief Valve

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 4820-01-102-8512?

The FSCG of the NSN 4820-01-102-8512 is 4820

Does the NSN 4820-01-102-8512 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-102-8512 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 4820-01-102-8512 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-102-8512 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 4820-01-102-8512 was assigned to the Federal Catalog?

It was assigned 45 years ago, on Wed, Oct 29, 1980