8557901K

View detailed technical data, stock status, and sourcing information for: 8557901K
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-377-3092

Item Name Code

05488

Assigment Date

07/12/1993 (33 years ago)

A valve having a flat or tapered disk (gate) which moves transversely to the axis of flow by rotating or sliding movements of the stem to open or close the orifice. It may also contain an oval or rectangular shaped slide which may be manually, motor, or pressure operated through the means of an arm or arm assembly. The body flange may be designed to accommodate tube type connectors. It may or may not contain thermal relief features. Includes valve (gate) specifically designed for the control of fluid systems in aircraft or missiles.

round with holes all ends flange shape, flange all ends connection type, 6 all ends bolt hole quantity, automatic valve operation method, disk flow control device

Product Characteristics

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

Flow Control Device: disk
Bolt Hole Quantity: 6 all ends
Valve Operation Method: automatic
Flange Shape: round with holes all ends
Connection Type: flange all ends
Valve Size: 1.500 inches
Nominal Outside Diameter: 5.006 inches all ends
Face To Face Distance: 8.000 inches
Nominal Thickness: 0.045 inches all ends
Bolt Hole Nominal Diameter: 0.562 inches all ends
Bolt Circle Nominal Diameter: 3.938 inches all ends
Flange Face Design: plain all ends
Material: copper alloy body
Style Designator: straight thru flanged ends note:to be used for valve bodies of one section only.

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
85579 AND CD 15272	Safety Relief Valve
8557901K	Safety Relief Valve
8557901K AND CD 15272	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-377-3092?

The FSCG of the NSN 4820-01-377-3092 is 4820

Does the NSN 4820-01-377-3092 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-377-3092 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 4820-01-377-3092 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-377-3092 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 4820-01-377-3092 was assigned to the Federal Catalog?

It was assigned 33 years ago, on Mon, Jul 12, 1993