B12-221-A2L-AV

View detailed technical data, stock status, and sourcing information for: B12-221-A2L-AV
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-318-7925

Item Name Code

27565

Assigment Date

04/25/1990 (36 years ago)

A valve designed to automatically maintain within close limits a predetermined outlet pressure which may be adjustable within a specified range regardless of the higher fluctuating or constant inlet pressure. It is designed for use with compressed gas(es) and various liquids and may include gauges. It may be inline or cartridge (manifold) design. Excludes:regulator, pressure, medical gas administration apparatus; regulator, oxygen, barometric continuous flow; regulator, oxygen demand; regulator, oxygen diluter demand; and valve(1), fluid pressure regulating, aircraft.

optional end first end style designator, threaded internal pipe first end connection type, outlet pressure gage and dump valve furnished items, straight thru body style, air media for which designed

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Body Style: straight thru
Furnished Items: outlet pressure gage and dump valve
Media For Which Designed: air
First End Connection Type: threaded internal pipe
First End Style Designator: optional end
First End Thread Direction: right-hand
Second End Relationship With First End: identical
Flow Control Device: diaphragm
Flow Control Device Material: unable to decode
End Connection Quantity: 1
Renewable Seat Ring Type: retaining ring
Mounting Facility: bracket
Outlet Pressure Range: +5.0 to 125.0 pounds per square inch
Regulation Type: manual, double stage
Manual Control Method: knob
Valve Stem Design: double seat
Valve Loading Method: spring
Maximum Inlet Pressure Rating: 200.0 pounds per square inch
Filter: included
Material: unable to decode

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
B12-221-A2L-AV	Fluid Pressure Regulating Valve

FAQs

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

What is the FSCG of the NSN 4820-01-318-7925?

The FSCG of the NSN 4820-01-318-7925 is 4820

Does the NSN 4820-01-318-7925 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809015

Does NSN 4820-01-318-7925 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 4820-01-318-7925 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-318-7925 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 4820-01-318-7925 was assigned to the Federal Catalog?

It was assigned 36 years ago, on Wed, Apr 25, 1990