71010469001 THRU 9011

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-218-3302

Item Name Code

05488

Assigment Date

10/10/1985 (40 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.

3a all ends thread class, right-hand all ends thread direction, poppet flow control device, 280.0 fahrenheit single response maximum operating temp, spring disk loading method

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: 280.0 fahrenheit single response
Minimum Operating Temp: -40.0 fahrenheit
Connection Style: plain (tube) all ends
Valve Operation Method: automatic
Connection Type: threaded external tube all ends
Maximum Operating Pressure: 200.0 pounds per square inch single response
Nominal Thread Size: 0.438 inches all ends
Opening Pressure Setting: 52.0 pounds per square inch
Material: aluminum alloy 2024 body
Media For Which Designed: air 1st response
Media For Which Designed: alcohol, ethyl 2nd response
Media For Which Designed: ammonia, gaseous 3rd response
Media For Which Designed: fuel/oil, hydrocarbon 4th response
Media For Which Designed: helium 5th response
Style Designator: straight thru w/baffle
Thread Series Designator: unjf all ends
Furnished Items And Quantity: 1 deflector cap

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
71010469001 THRU 9011	Safety Relief Valve
71010469006	Safety Relief Valve
D559A-4D-52	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-218-3302?

The FSCG of the NSN 4820-01-218-3302 is 4820

Does the NSN 4820-01-218-3302 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-218-3302 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 4820-01-218-3302 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-218-3302 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 4820-01-218-3302 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Thu, Oct 10, 1985