4820-00-005-7346

Find complete technical information, availability, and procurement data for: 4820-00-005-7346
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-005-7346

Item Name Code

05488

Assigment Date

06/21/1972 (54 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.

250.0 fahrenheit single response maximum operating temp, poppet flow control device, right-hand all ends thread direction, spring disk loading method, 3a all ends thread class

Product Characteristics

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

Thread Class: 3a all ends
Thread Direction: right-hand all ends
Flow Control Device: poppet
Disk Loading Method: spring
Maximum Operating Temp: 250.0 fahrenheit single response
Connection Style: flareless (tube) all ends
Valve Operation Method: automatic
Connection Type: threaded external tube all ends
Features Provided: pressure tight outlet side
Thread Quantity Per Inch: 16 all ends
Adjustable Pressure Range: +112.0 to 168.0 pounds per square inch
Maximum Operating Pressure: 2500.0 pounds per square inch single response
Nominal Thread Size: 0.750 inches all ends
Seat Angle: 12.0 degrees all ends
Opening Pressure Setting: 140.0 pounds per square inch
Nominal Outside Diameter Tube Accommodated: 0.500 inches all ends
Special Features: valve size 1/2 in.
Material: rubber butadiene-acrylonitrile class nbr and steel comp 303 flow control device
Material: steel comp 303 body
Material: steel comp 303 seat
Material Document And Classification: fedstd66,aisi303/sae30303 fed std single material response overall
Media For Which Designed: air 1st response
Media For Which Designed: ethylene glycol 2nd response
Media For Which Designed: fuel/oil, hydrocarbon 3rd response
Style Designator: straight thru note: to be used for valve bodies of separable sections.
Thread Series Designator: unjf all ends

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
5159T8EE140	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-005-7346?

The FSCG of the NSN 4820-00-005-7346 is 4820

Does the NSN 4820-00-005-7346 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-005-7346 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 4820-00-005-7346 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-005-7346 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 4820-00-005-7346 was assigned to the Federal Catalog?

It was assigned 54 years ago, on Wed, Jun 21, 1972