627B31-4-2

View detailed technical data, stock status, and sourcing information for: 627B31-4-2
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-709-9670

Item Name Code

05488

Assigment Date

01/01/1961 (65 years ago)

spring disk loading method, integral bonnet attachment method, right-hand all ends thread direction, poppet flow control device, inside spring 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 Direction: right-hand all ends
Flow Control Device: poppet
Bonnet Type: inside spring
Bonnet Attachment Method: integral
Disk Loading Method: spring
Connection Style: plain,optional end(pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded internal pipe all ends
Features Provided: pressure tight outlet side
Adjustable Pressure Range: +40.0 to 125.0 pounds per square inch
Nominal Thread Size: 0.250 inches all ends
Opening Pressure Setting: 90.0 pounds per square inch
Material: aluminum alloy seat
Material: aluminum alloy body
Material: steel comp 304 and rubber butadiene-acrylonitrile class nbr flow control device
Material Document And Classification: ed std 66 fed spec 5th material response flow control device
Style Designator: angle
Thread Series Designator: npt all ends

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-00-422-5586	No Name Available	02/01/2000

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
430022	Safety Relief Valve
627B3 1-4	Safety Relief Valve
627B3 1/4-2	Safety Relief Valve
627B31-4-2	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-709-9670?

The FSCG of the NSN 4820-00-709-9670 is 4820

Does the NSN 4820-00-709-9670 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-709-9670 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 4820-00-709-9670 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-709-9670 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 4820-00-709-9670 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961