20302H41M

View detailed technical data, stock status, and sourcing information for: 20302H41M
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-247-8693

Item Name Code

05488

Assigment Date

06/29/1973 (53 years ago)

55.0 gallons per minute valve discharge flow rate, outside screw-yoke bonnet type, spring disk loading method, bolted bonnet attachment method, disk 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.

Flow Control Device: disk
Bonnet Type: outside screw-yoke
Bonnet Attachment Method: bolted
Disk Loading Method: spring
Valve Discharge Flow Rate: 55.0 gallons per minute
Renewable Seat Ring Type: threaded
Bolt Hole Quantity: 4 all ends
Maximum Operating Temp: 150.0 fahrenheit single response
Valve Operation Method: automatic
Flange Shape: round with holes all ends
Connection Type: flange all ends
Mounting Facility: bracket
Features Provided: valve stem lock shield and pressure tight outlet side
Adjustable Pressure Range: +42.0 to 56.0 pounds per square inch
Maximum Operating Pressure: 150.0 pounds per square inch single response
Nominal Outside Diameter: 4.625 inches all ends
Nominal Thickness: 0.625 inches all ends
Bolt Hole Nominal Diameter: 0.625 inches all ends
Bolt Circle Nominal Diameter: 3.500 inches all ends
Flange Face Design: plain all ends
Material: steel body
Material: steel flow control device
Material: steel seat
Material: steel stem
Media For Which Designed: water, salt single response
Style Designator: angle
Nondefinitive Spec/Std Data: a grade

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-00-289-0833	No Name Available	01/01/1985

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
20302H41M	Safety Relief Valve
MILV24332GRA1 1-4 150-42T056F	Safety Relief Valve
R10AG5G5AY-CSI	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-247-8693?

The FSCG of the NSN 4820-00-247-8693 is 4820

Does the NSN 4820-00-247-8693 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-247-8693 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 4820-00-247-8693 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-247-8693 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 4820-00-247-8693 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Fri, Jun 29, 1973