20267R

View detailed technical data, stock status, and sourcing information for: 20267R
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-876-7230

Item Name Code

05488

Assigment Date

01/01/1962 (64 years ago)

spring disk loading method, plain (pipe) 1st end connection style, right-hand 1st end thread direction, 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.

Thread Direction: right-hand 1st end
Flow Control Device: disk
Disk Loading Method: spring
Connection Style: plain (pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded external pipe 1st end
Nominal Thread Size: 1.250 inches 1st end
Material: plastic polytetrafluoroethylene flow control device
Material: steel body
Surface Treatment: cadmium
Style Designator: straight thru
Thread Series Designator: npt 1st end

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4130-00-433-2722	No Name Available	08/01/1977

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
20267R	Safety Relief Valve
551034	Safety Relief Valve
B567-385	Safety Relief Valve
B567S 385 AO	Safety Relief Valve
B567S-385GQ	Safety Relief Valve
VAL05050	Safety Relief Valve
VAL06711	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-876-7230?

The FSCG of the NSN 4820-00-876-7230 is 4820

Does the NSN 4820-00-876-7230 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-876-7230 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 4820-00-876-7230 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-876-7230 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 4820-00-876-7230 was assigned to the Federal Catalog?

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