1IN SW-701 AND B-45270

View detailed technical data, stock status, and sourcing information for: 1IN SW-701 AND B-45270
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-262-2544

Item Name Code

05487

Assigment Date

08/26/1987 (38 years ago)

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes:valve (1), relief, pressure and temperature.

1.000 inches all ends nominal pipe size accommodated, piston flow control device, 1000.0 fahrenheit 1st response maximum operating temp, 100.0 fahrenheit 2nd response maximum operating temp, socket (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.

Nominal Pipe Size Accommodated: 1.000 inches all ends
Flow Control Device: piston
Maximum Operating Temp: 100.0 fahrenheit 2nd response
Maximum Operating Temp: 1000.0 fahrenheit 1st response
Connection Style: socket (pipe) all ends
Valve Operation Method: automatic
Connection Type: unthreaded internal pipe all ends
Mounting Position: horizontal
Maximum Operating Pressure: 2000.0 pounds per square inch 2nd response
Maximum Operating Pressure: 235.0 pounds per square inch 1st response
Special Features: pistion check type; integral hard faced seat; chrome trim; conventional port
Material: steel body
Media For Which Designed: steam 1st response
Media For Which Designed: water-oil-gas 2nd response
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Below is a list of NSNs that have been officially superseded by this NSN: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
4820-01-262-3133	No Name Available	06/01/1988
4820-01-315-7600	No Name Available	10/01/1995

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
1IN SW-701 AND B-45270	Check Valve
1IN SW701 B-45270	Check Valve
B-45270	Check Valve
SW-701 1IN	Check Valve
SW-701 1INCH	Check Valve
SW701-1.0IN	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-262-2544?

The FSCG of the NSN 4820-01-262-2544 is 4820

Does the NSN 4820-01-262-2544 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-01-262-2544 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 4820-01-262-2544 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-262-2544 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 4820-01-262-2544 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Wed, Aug 26, 1987