DO-10-H/S4 51T56PSI

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-274-9155

Item Name Code

05488

Assigment Date

03/16/1988 (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.

spring disk loading method, inside spring bonnet type, 4 all ends bolt hole quantity, disk flow control device, union bonnet attachment method

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: inside spring
Bonnet Attachment Method: union
Disk Loading Method: spring
Bolt Hole Quantity: 4 all ends
Maximum Operating Temp: 250.0 fahrenheit single response
Valve Operation Method: automatic
Flange Shape: round with holes all ends
Connection Type: flange all ends
Valve Size: 1.500 inches
Adjustable Pressure Range: +51.0 to 56.0 pounds per square inch
Maximum Operating Pressure: 275.0 pounds per square inch single response
Nominal Outside Diameter: 5.000 inches 2nd end
Nominal Outside Diameter: 7.500 inches 1st end
Nominal Thickness: 0.562 inches 2nd end
Nominal Thickness: 0.750 inches 1st end
First Connection Face To Centerline Distance: 4.875 inches
Bolt Hole Nominal Diameter: 0.625 inches 2nd end
Bolt Hole Nominal Diameter: 0.750 inches 1st end
Second Connection Face To Centerline Distance: 5.125 inches
Bolt Circle Nominal Diameter: 3.875 inches 2nd end
Bolt Circle Nominal Diameter: 6.000 inches 1st end
Flange Face Design: raised straight all ends
Raised Face Nominal Height: 0.062 inches all ends
Raised Face Nominal Diameter: 2.875 inches 2nd end
Raised Face Nominal Diameter: 5.000 inches 1st end
Material: steel body
Material: steel corrosion resisting flow control device
Material: steel corrosion resisting seat
Material: steel corrosion resisting stem
Media For Which Designed: water-oil-gas single response
Style Designator: angle flanged ends

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
D0-10-H/S4 51T5	Safety Relief Valve
DO-10-H/S4 51T56	Safety Relief Valve
DO-10-H/S4 51T56PSI	Safety Relief Valve
NMP-1180 DO-10-H	Safety Relief Valve
NMP-1180 DO-10-H/A4 51T56PSI	Safety Relief Valve
NMP-1185 DO-10-H/S4 51T56PSI	Safety Relief Valve
NMP-1185D0-10-H/S4SET PSI 51-56	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-274-9155?

The FSCG of the NSN 4820-01-274-9155 is 4820

Does the NSN 4820-01-274-9155 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-274-9155 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 4820-01-274-9155 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-274-9155 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 4820-01-274-9155 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Wed, Mar 16, 1988