7M657-1

View detailed technical data, stock status, and sourcing information for: 7M657-1
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-609-9926

Item Name Code

20572

Assigment Date

01/30/1975 (51 years ago)

A valve with one inlet and one outlet connection with outlet flow at an angle to inlet flow. The flow is controlled by the action of a stem which lifts disks perpendicularly off the center axis of its seat. It may be inline or cartridge (manifold) design. Excludes:valve (1), y; valve, stop-check; and cock, shutoff, screw stem.

180.0 fahrenheit single response maximum operating temp, right-hand all ends thread direction, 22.5 cubic feet per minute valve discharge flow rate, 0.688 inches offset distance, piston 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
Offset Distance: 0.688 inches
Flow Control Device: piston
Valve Discharge Flow Rate: 22.5 cubic feet per minute
Maximum Operating Temp: 180.0 fahrenheit single response
Connection Style: plain,optional end(pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded internal pipe all ends
Mounting Facility: bracket
Maximum Operating Pressure: 125.0 pounds per square inch single response
Nominal Thread Size: 0.125 inches all ends
Special Features: washer 1,also furnished
Material: copper alloy overall
Media For Which Designed: air single response
Style Designator: cross w/offset
Thread Series Designator: npt all ends
Furnished Items And Quantity: 2 nut

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-01-142-1126	No Name Available	07/01/1993

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
31PTAC2	Shuttle Valve
7M657	Shuttle Valve
7M657-1	Shuttle Valve

FAQs

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

What is the FSCG of the NSN 4820-00-609-9926?

The FSCG of the NSN 4820-00-609-9926 is 4820

Does the NSN 4820-00-609-9926 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809050

Does NSN 4820-00-609-9926 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 4820-00-609-9926 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-609-9926 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 4820-00-609-9926 was assigned to the Federal Catalog?

It was assigned 51 years ago, on Thu, Jan 30, 1975