B305B

View detailed technical data, stock status, and sourcing information for: B305B
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-287-3097

Item Name Code

05487

Assigment Date

01/01/1963 (63 years ago)

A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.

right-hand all ends thread direction, 406.0 fahrenheit 1st response maximum operating temp, disk flow control device, 150.0 fahrenheit 2nd response maximum operating temp, logistics support vessel end item identification

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: 406.0 fahrenheit 1st response
End Item Identification: logistics support vessel
Connection Style: plain, optional end (pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded internal pipe all ends
Mounting Position: horizontal or vertical
Thread Quantity Per Inch: 11-1/2 1st end
Maximum Operating Pressure: 125.0 pounds per square inch 1st response
Maximum Operating Pressure: 200.0 pounds per square inch 2nd response
Nominal Thread Size: 1.250 inches all ends
Material: copper alloy 360 flow control device
Material: copper alloy 836 body
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
Nondefinitive Spec/Std Data: 4 type and a class

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-00-079-6132	No Name Available	09/01/2023
4820-00-227-0122	No Name Available	08/01/1969
4820-00-287-4367	No Name Available	01/01/1961
4820-00-821-9832	No Name Available	01/01/1962
4820-00-843-3519	No Name Available	01/01/1963
4820-00-937-5916	No Name Available	07/01/1977
4820-01-060-6004	No Name Available	11/01/2007

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
0001381	Check Valve
0600	Check Valve
103-1-1-4	Check Valve
13218E0478	Check Valve
13218E0478-106	Check Valve
B-319 SZ 1 1/4 IN	Check Valve
B305B	Check Valve
B305B1-1/4IN	Check Valve
B319	Check Valve
C25A10	Check Valve
FIG406	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-287-3097?

The FSCG of the NSN 4820-00-287-3097 is 4820

Does the NSN 4820-00-287-3097 have a Schedule B code assigned?

Yes, the Schedule B code is 8481301090

Does NSN 4820-00-287-3097 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 4820-00-287-3097 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-287-3097 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 4820-00-287-3097 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963