22-1146

View detailed technical data, stock status, and sourcing information for: 22-1146
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-604-4971

Item Name Code

05488

Assigment Date

01/25/1975 (51 years ago)

piston flow control device, 1.000 inches 1st end nominal pipe size accommodated, plain (pipe) all ends connection style, spring disk loading method, right-hand all ends thread direction

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: 1.000 inches 1st end
Thread Direction: right-hand all ends
Flow Control Device: piston
Disk Loading Method: spring
Connection Style: plain (pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded external pipe all ends
Nominal Thread Size: 1.000 inches all ends
Opening Pressure Setting: 300.0 pounds per square inch
Special Features: maritime model with monel valve trim, used with ammonia, corrosive,refrigerants
Material: copper alloy and plastic polytetrafluoroethylene flow control device
Material: steel body
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Below is a list of NSNs that have been officially superseded by this NSN: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
4820-01-218-3301	No Name Available	11/01/1999

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
022-02097	Safety Relief Valve
022-02097-000	Safety Relief Valve
22-1146	Safety Relief Valve
22-1146P	Safety Relief Valve
365-24237PC49	Safety Relief Valve
464686	Safety Relief Valve
464686 PIECE 75	Safety Relief Valve
B566S-290	Safety Relief Valve
B566S300	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-604-4971?

The FSCG of the NSN 4820-00-604-4971 is 4820

Does the NSN 4820-00-604-4971 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-604-4971 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 4820-00-604-4971 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-604-4971 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 4820-00-604-4971 was assigned to the Federal Catalog?

It was assigned 51 years ago, on Sat, Jan 25, 1975