F1G231

View detailed technical data, stock status, and sourcing information for: F1G231
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-288-7143

Item Name Code

05487

Assigment Date

01/01/1961 (65 years ago)

550.0 fahrenheit 1st response maximum operating temp, plain, optional end (pipe) all ends connection style, right-hand all ends thread direction, 150.0 fahrenheit 2nd response maximum operating temp, 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 all ends
Flow Control Device: disk
Maximum Operating Temp: 150.0 fahrenheit 2nd response
Maximum Operating Temp: 550.0 fahrenheit 1st response
Connection Style: plain, optional end (pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded internal pipe all ends
Mounting Position: horizontal
Maximum Operating Pressure: 200.0 pounds per square inch 1st response
Maximum Operating Pressure: 400.0 pounds per square inch 2nd response
Nominal Thread Size: 1.500 inches all ends
Material: copper alloy 922 body
Material: copper alloy 922 seat
Material: copper alloy flow control device
Material Document And Classification: qq-c-390,alloy d4/d/ fed spec single material response body
Material Document And Classification: qq-c-390,alloy d4/d/ fed spec single material response seat
Media For Which Designed: steam 1st response
Media For Which Designed: water-oil-gas 2nd response
Style Designator: straight thru
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Below is a list of NSNs that have been officially superseded by this NSN: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
4820-00-059-6582	No Name Available	11/08/1968
4820-00-275-2220	No Name Available	03/01/1983
4820-00-287-4368	No Name Available	02/12/1969
4820-00-973-9871	No Name Available	09/01/2023

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
233 1-1/2IN	Check Valve
36426-26	Check Valve
36426PC26	Check Valve
4103-1495366PC26	Check Valve
F1G231	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-288-7143?

The FSCG of the NSN 4820-00-288-7143 is 4820

Does the NSN 4820-00-288-7143 have a Schedule B code assigned?

Yes, the Schedule B code is 8481301090

Does NSN 4820-00-288-7143 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 4820-00-288-7143 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-288-7143 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 4820-00-288-7143 was assigned to the Federal Catalog?

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