2621-927-01 ASS

View detailed technical data, stock status, and sourcing information for: 2621-927-01 ASS
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-134-7750

Item Name Code

05487

Assigment Date

07/09/1982 (44 years ago)

A dual purpose marine valve used primarily with shipboard cargo tanks and bulkheads. It acts both as a vent valve, to relieve vacuum and pressure, and a check valve, to prevent cargo contamination. It is equipped with an internal flame screen and/or a protective mesh and may include a hinged cover.

unthreaded internal tube all ends connection type, 160.0 fahrenheit single response maximum operating temp, socket with brazing ring (tube) all ends connection style, automatic valve operation method, 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.

Flow Control Device: disk
Maximum Operating Temp: 160.0 fahrenheit single response
Connection Style: socket with brazing ring (tube) all ends
Valve Operation Method: automatic
Connection Type: unthreaded internal tube all ends
Mounting Position: horizontal
Maximum Operating Pressure: 700.0 pounds per square inch single response
Nominal Outside Diameter Tube Accommodated: 0.688 inches all ends
Material: copper alloy 903 body
Material: copper alloy 903 flow control device
Material Document And Classification: qq-c-390, alloy 5/d/ fed spec single material response overall
Style Designator: straight thru

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-01-220-6598	No Name Available	12/01/1988

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
2620-927X1ASSY8BAMODCOPNI	Check Valve
2621-927-01	Check Valve
2621-927-01 ASS	Check Valve
2621-927-01 ASSEMBLY A 1/2 IN	Check Valve
90168-000	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-134-7750?

The FSCG of the NSN 4820-01-134-7750 is 4820

Does the NSN 4820-01-134-7750 have a Schedule B code assigned?

Yes, the Schedule B code is 8481301090

Does NSN 4820-01-134-7750 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 4820-01-134-7750 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-134-7750 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 4820-01-134-7750 was assigned to the Federal Catalog?

It was assigned 44 years ago, on Fri, Jul 9, 1982