D49501 ITEM R10

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-313-8647

Item Name Code

05488

Assigment Date

01/19/1990 (36 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.

outside screw-yoke bonnet type, bolted bonnet attachment method, disk flow control device, spring disk loading method, 150.0 fahrenheit single response maximum operating temp

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
Bonnet Type: outside screw-yoke
Bonnet Attachment Method: bolted
Disk Loading Method: spring
Maximum Operating Temp: 150.0 fahrenheit single response
Connection Style: socket with brazing ring (tube) all ends
Valve Operation Method: automatic
Connection Type: unthreaded internal tube all ends
Adjustable Pressure Range: +18.0 to 22.0 pounds per square inch
Maximum Operating Pressure: 400.0 pounds per square inch single response
Nominal Outside Diameter Tube Accommodated: 1.500 inches all ends
Material: bronze body
Material: nickel alloy flow control device
Material: nickel alloy seat
Material: nickel alloy stem
Material: plastic polytetrafluoroethylene packing
Media For Which Designed: water-oil-gas single response
Style Designator: angle

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
D49501 ITEM R10	Safety Relief Valve
D49501 ITEM R10AH1H106-BMB	Safety Relief Valve
R10AH1H106-BM3	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-313-8647?

The FSCG of the NSN 4820-01-313-8647 is 4820

Does the NSN 4820-01-313-8647 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-313-8647 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 4820-01-313-8647 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-313-8647 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 4820-01-313-8647 was assigned to the Federal Catalog?

It was assigned 36 years ago, on Fri, Jan 19, 1990