135-00560

View detailed technical data, stock status, and sourcing information for: 135-00560
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-095-2040

Item Name Code

05488

Assigment Date

01/01/1963 (63 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.

spring disk loading method, 3b 1st end thread class, bonded renewable seat ring type, right-hand 1st end thread direction, poppet 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 Class: 3b 1st end
Thread Direction: right-hand 1st end
Flow Control Device: poppet
Disk Loading Method: spring
Renewable Seat Ring Type: bonded
Connection Style: gasket seal(boss) 1st end
Valve Operation Method: manual
Connection Type: threaded internal boss 1st end
Features Provided: pressure tight outlet side
Thread Quantity Per Inch: 20 1st end
Maximum Operating Pressure: 85.0 pounds per square inch single response
Nominal Thread Size: 0.437 inches 1st end
Opening Pressure Setting: 3.5 pounds per square inch
Media For Which Designed: air single response
Style Designator: straight thru
Thread Series Designator: unf 1st end

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
1650-00-124-1774	No Name Available	01/01/1963
1650-00-474-1954	No Name Available	01/01/1961

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
135-00560	Safety Relief Valve
667536	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-095-2040?

The FSCG of the NSN 4820-00-095-2040 is 4820

Does the NSN 4820-00-095-2040 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-095-2040 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 4820-00-095-2040 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-095-2040 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 4820-00-095-2040 was assigned to the Federal Catalog?

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