4820-00-025-7621

Find complete technical information, availability, and procurement data for: 4820-00-025-7621
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-025-7621

Item Name Code

05488

Assigment Date

10/21/1972 (53 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 valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes:valve (1), relief, pressure and temperature.

right-hand all ends thread direction, plain,optional end(pipe) all ends connection style, poppet flow control device, spring disk loading method, 100.0 gallons per minute valve discharge flow rate

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 all ends
Flow Control Device: poppet
Disk Loading Method: spring
Valve Discharge Flow Rate: 100.0 gallons per minute
Connection Style: plain,optional end(pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded internal pipe all ends
Features Provided: pressure tight outlet side
Adjustable Pressure Range: +125.0 to 1000.0 pounds per square inch
Nominal Thread Size: 1.250 inches 1st end
Special Features: w/0.250-18 npt gage port
Material: steel overall
Surface Treatment: paint
Style Designator: cross
Thread Series Designator: npt all ends

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-00-506-1288	No Name Available	11/01/1976

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
CT10B20	Safety Relief Valve
CT10B30	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-025-7621?

The FSCG of the NSN 4820-00-025-7621 is 4820

Does the NSN 4820-00-025-7621 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-025-7621 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 4820-00-025-7621 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-025-7621 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 4820-00-025-7621 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Sat, Oct 21, 1972