17390NREVFLNS5-

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-828-9925

Item Name Code

27565

Assigment Date

01/01/1962 (64 years ago)

internal pilot valve furnished items, 4.625 inches nominal first end flange outside diameter, straight thru body style, raised face flange first end connection type, steam media for which designed

Product Characteristics

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

First End Flange Outside Diameter: 4.625 inches nominal
Body Style: straight thru
Furnished Items: internal pilot valve
Media For Which Designed: steam
First End Connection Type: raised face flange
First End Style Designator: raised
First End Raised Face Height: 0.250 inches nominal
First End Raised Face Diameter: 1.688 inches nominal
First End Flange Shape Style: round w/ bolt holes
First End Flange Thickness: 0.625 inches nominal
First End Bolt Hole Quantity: 4
First End Bolt Hole Diameter: 0.750 inches nominal
First End Bolt Circle Diameter: 3.250 inches nominal
Second End Relationship With First End: identical
Face To Face Distance: 8.500 inches nominal
Flow Control Device: disk, bevel seat, top guided and disk, bevel seat, bottom guided
Flow Control Device Material: unable to decode
End Connection Quantity: 2
Outlet Pressure Range: +100.0 to 450.0 pounds per square inch
Regulation Type: manual single stage
Manual Control Method: screw
Valve Stem Design: single seat
Valve Loading Method: spring
Remote Actuation Method: piston
Maximum Inlet Pressure Rating: 600.0 pounds per square inch
Filter: not included
Temp Rating: 775.0 fahrenheit maximum
Special Features: 2630.0 lb per hr at lowest reduced pressure,and 2530.0 lb per hr at highest reduced pressure,flow capacity
Material: unable to decode
Nondefinitive Spec/Std Data: a class and d composition and 600 pressure rating

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-00-287-3569	No Name Available	11/06/1968

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
17390NREVFLNS5-	Fluid Pressure Regulating Valve

FAQs

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

What is the FSCG of the NSN 4820-00-828-9925?

The FSCG of the NSN 4820-00-828-9925 is 4820

Does the NSN 4820-00-828-9925 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809015

Does NSN 4820-00-828-9925 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 4820-00-828-9925 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-828-9925 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 4820-00-828-9925 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962