20017X51M

View detailed technical data, stock status, and sourcing information for: 20017X51M
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-129-7664

Item Name Code

05488

Assigment Date

04/10/1982 (44 years ago)

A valve having two or more ports with valve stem or pilot needle in a normally open or closed position. It is specifically designed to stop or start or change the flow of fluid by means of the magnetic action of an electric coil on a moveable core or plunger. The valve may be equipped with a manual opening or closing device. For items with three or more ports that utilize a reciprocating slide with recess areas which mate with ports in an integral or replaceable ported sleeve, see valve (1), linear, directional control. It may be inline or cartridge (manifold) design. Excludes:valve (1), butterfly.

disk flow control device, 2.000 inches all ends nominal pipe size accommodated, inside spring bonnet type, spring disk loading method, bolted bonnet attachment method

Product Characteristics

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

Nominal Pipe Size Accommodated: 2.000 inches all ends
Flow Control Device: disk
Bonnet Type: inside spring
Bonnet Attachment Method: bolted
Disk Loading Method: spring
Maximum Operating Temp: 165.0 fahrenheit single response
End Item Identification: los angeles class ssn(688)
Connection Style: streamlined with one brazing ring all ends
Valve Operation Method: automatic
Connection Type: unthreaded internal pipe all ends
Adjustable Pressure Range: +351.0 to 400.0 pounds per square inch
Maximum Operating Pressure: 500.0 pounds per square inch single response
Material: copper alloy body
Material: steel comp 316 stem
Material Document And Classification: qq-n-281 fed spec single material response flow control device
Material Document And Classification: qq-n-281 fed spec single material response seat
Material Document And Classification: qq-n-281 fed spec single material response stem
Material Document And Classification: qq-c-390,alloy d4/d/ fed spec single material response body
Media For Which Designed: gas, inert single response
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
200170150351	Safety Relief Valve
20017X51M	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-129-7664?

The FSCG of the NSN 4820-01-129-7664 is 4820

Does the NSN 4820-01-129-7664 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-129-7664 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 4820-01-129-7664 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-129-7664 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 4820-01-129-7664 was assigned to the Federal Catalog?

It was assigned 44 years ago, on Sat, Apr 10, 1982