27-11-4

View detailed technical data, stock status, and sourcing information for: 27-11-4
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-287-4373

Item Name Code

05487

Assigment Date

01/01/1960 (66 years ago)

automatic valve operation method, disk flow control device, right-hand all ends thread direction, threaded internal pipe all ends connection type, plain, optional end (pipe) all ends connection style

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
Connection Style: plain, optional end (pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded internal pipe all ends
Mounting Position: horizontal
Thread Quantity Per Inch: 11-1/2 1st end
Maximum Operating Pressure: 150.0 pounds per square inch 1st response
Maximum Operating Pressure: 300.0 pounds per square inch 2nd response
Nominal Thread Size: 1.250 inches all ends
Material: copper alloy 836 body
Material: copper alloy seat
Material: rubber butadiene-acrylonitrile class nbr flow control device
Material Document And Classification: qq-c-390,alloy b5/d/ fed spec single material response body
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Below is a list of NSNs that have been officially superseded by this NSN: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
4820-00-287-5150	No Name Available	07/01/1994
4820-00-818-1456	No Name Available	10/14/1973

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
1FIG231	Check Valve
27-11-4	Check Valve
346N	Check Valve
B32221-1/4IN	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-287-4373?

The FSCG of the NSN 4820-00-287-4373 is 4820

Does the NSN 4820-00-287-4373 have a Schedule B code assigned?

Yes, the Schedule B code is 8481301090

Does NSN 4820-00-287-4373 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 4820-00-287-4373 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-287-4373 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 4820-00-287-4373 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960