4820-01-271-4796

Find complete technical information, availability, and procurement data for: 4820-01-271-4796
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-271-4796

Item Name Code

05485

Assigment Date

01/26/1988 (38 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.

stem flow control device, right-hand all ends thread direction, threaded bonnet attachment method, 2a all ends thread class, outside screw-yoke 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 Class: 2a all ends
Thread Direction: right-hand all ends
Flow Control Device: stem
Bonnet Type: outside screw-yoke
Bonnet Attachment Method: threaded
Maximum Operating Temp: 250.0 fahrenheit single response
Connection Style: flareless (tube) all ends
Valve Operation Method: manual
Connection Type: threaded external tube all ends
Features Provided: bonnet packing
Maximum Operating Pressure: 6000.0 pounds per square inch single response
Nominal Thread Size: 0.438 inches all ends
Seat Angle: 24.0 degrees all ends
Material: plastic polytetrafluoroethylene and steel comp 316 packing
Material: rubber fluorocarbon class fpm flow control device
Material: steel comp 316 body
Material: steel comp 316 stem
Material Document And Classification: aisi uns s31600 assn std single material response body
Material Document And Classification: aisi uns s31600 assn std single material response stem
Material Document And Classification: kel-f cagec 78361 mfr ref single material response flow control device
Material Document And Classification: tfe mfr ref 1st material response and aisi uns s31600 assn std single material response packing
Style Designator: straight thru
Supplementary Features: soft stem tip and gyrolok tube fittings
Thread Series Designator: unf all ends
Furnished Items And Quantity: 4 ferrule and 1 handle and 2 nut

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
1751G4Y	Globe Valve

FAQs

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

What is the FSCG of the NSN 4820-01-271-4796?

The FSCG of the NSN 4820-01-271-4796 is 4820

Does the NSN 4820-01-271-4796 have a Schedule B code assigned?

Yes, the Schedule B code is 8481803060

Does NSN 4820-01-271-4796 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 4820-01-271-4796 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-271-4796 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 4820-01-271-4796 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Tue, Jan 26, 1988