657-D SN10946816-27

View detailed technical data, stock status, and sourcing information for: 657-D SN10946816-27
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-301-4647

Item Name Code

05485

Assigment Date

05/29/1989 (37 years ago)

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It is specifically designed and/or cleaned for oxygen systems. See valve, safety relief.

threaded internal pipe all ends connection type, 3600.0 pounds per square inch single response maximum operating pressure, 100.0 fahrenheit single response maximum operating temp, disk flow control device, plain,optional end(pipe) all ends connection style

Product Characteristics

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

Flow Control Device: disk
Maximum Operating Temp: 100.0 fahrenheit single response
Connection Style: plain,optional end(pipe) all ends
Connection Type: threaded internal pipe all ends
Maximum Operating Pressure: 3600.0 pounds per square inch single response
Material: steel body
Material: steel flow control device
Material: steel seat
Style Designator: straight thru
Fsc Application Data: diaphragm control valve

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
657-D SN10946816-27	Globe Valve

FAQs

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

What is the FSCG of the NSN 4820-01-301-4647?

The FSCG of the NSN 4820-01-301-4647 is 4820

Does the NSN 4820-01-301-4647 have a Schedule B code assigned?

Yes, the Schedule B code is 8481803060

Does NSN 4820-01-301-4647 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 4820-01-301-4647 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-301-4647 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 4820-01-301-4647 was assigned to the Federal Catalog?

It was assigned 37 years ago, on Mon, May 29, 1989