A6820A

View detailed technical data, stock status, and sourcing information for: A6820A
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-288-7280

Item Name Code

05488

Assigment Date

01/01/1963 (63 years ago)

flange 1st end connection type, spring disk loading method, 8 1st end bolt hole quantity, +35.0 to 50.0 pounds per square inch adjustable pressure range, round with holes 1st end flange shape

Product Characteristics

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

Disk Loading Method: spring
Bolt Hole Quantity: 8 1st end
Flange Shape: round with holes 1st end
Connection Type: flange 1st end
Adjustable Pressure Range: +35.0 to 50.0 pounds per square inch
Maximum Operating Pressure: 5240.0 pounds per square inch single response
Nominal Outside Diameter: 7.688 inches 1st end
Bolt Hole Nominal Diameter: 0.562 inches 1st end
Bolt Circle Nominal Diameter: 6.562 inches 1st end
Flange Face Design: plain 1st end
Special Features: w/lifting lever
Material: copper alloy body
Material: nickel alloy flow control device
Material: nickel alloy stem
Style Designator: angle

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
2021400841M	Safety Relief Valve
A6820A	Safety Relief Valve
BAMGG04SMM	Safety Relief Valve
DD445S4824-44ALT2	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-288-7280?

The FSCG of the NSN 4820-00-288-7280 is 4820

Does the NSN 4820-00-288-7280 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-288-7280 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 4820-00-288-7280 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-288-7280 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 4820-00-288-7280 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963