4820-00-073-1775
Safety Relief Valve
Find complete technical information, availability, and procurement data for NSN 4820-00-073-1775 All details are based on official government and industry records to support accurate and compliant procurement.
Federal Supply Group
Valves
Federal Supply Classification
4820 Nonpowered Valves
National Stock Number
4820-00-073-1775
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, right-hand 1st end thread direction, inside spring bonnet type, pressure seal, ring type bonnet attachment method, 3b 1st end thread class
Characteristics
Below are the official specifications and performance details for this part, including technical data, material composition, and compliance information.
- Thread Class
- 3b 1st end
- Thread Direction
- right-hand 1st end
- Bonnet Type
- inside spring
- Bonnet Attachment Method
- pressure seal, ring type
- Disk Loading Method
- spring
- Valve Discharge Flow Rate
- 1.0 gallons per minute
- Connection Style
- gasket seal(boss) 1st end
- Valve Operation Method
- manual
- Connection Type
- threaded internal boss 1st end
- Features Provided
- bonnet packing and pressure tight outlet side
- Thread Quantity Per Inch
- 20 1st end
- Adjustable Pressure Range
- +3000.0 to 4000.0 pounds per square inch
- Maximum Operating Pressure
- 4000.0 pounds per square inch single response
- Nominal Thread Size
- 0.437 inches 1st end
- Opening Pressure Setting
- 4000.0 pounds per square inch
- Special Features
- reverse flow
- Media For Which Designed
- hydraulic fluid, phosphate-ester base single response
- Surface Treatment
- anodize
- Surface Treatment Document And Classification
- mil-a-8625,ty 2 mil spec single treatment response
- Thread Series Designator
- unf 1st end
Related Parts & Specifications
This NSN includes a range of related parts designed for specific operational needs. Review each item below to find in-depth specifications, functional details, and guidance for correct application and replacement.
Classification Data
Detailed NSN information including identification codes, classification data, and key indicators used for cataloging, logistics, and supply management.
- Type of Item Identification
- Demilitarization
- Criticality
- Federal Item Identification Guide
- Precious Metals Indicator
- Pseudo Item Name Code
- Hazardous Material Indicator
- Schedule B Code
- M - Partial descriptive - reference item identification (type 1a concept)
- Q - "commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"
- X - The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
- A046B0
- A - Item does not contain precious metal.
- 0005488
- N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
- 8481400000
Freight Information
Comprehensive freight classifications, shipping codes, and handling specifications for domestic and international transport compliance.
- Major Organizational Entity
- National Motor Freight Classification Item Number
- National Motor Freight Classification Sub-Item Number
- Uniform Freight Classification Item Number
- National Motor Freight Class Rating
- Water Commodity
- Type of Cargo
- Special Hand
- Air Dimension
- Air Commodity
- National Motor Freight Description
- XX
- 127220
- X
- 64490
- P - 77.5
- 576 - Metal and metal products, nos, (less than 35 feet)
- Z - No special type of cargo code applicable
- 9 - Other or no special handling required (sh)
- A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.
- VZ -
- pressure reg/red/relief valves noi
FAQs
Get insights on installation procedures, operating conditions, care instructions, industry regulations, and common issues. FAQs below provide key information for 4820-00-073-1775
What is the FSCG of the NSN 4820-00-073-1775?
The FSCG of the NSN 4820-00-073-1775 is 4820
Does the NSN 4820-00-073-1775 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-00-073-1775 require demilitarization?
"commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"
Does NSN 4820-00-073-1775 contain precious materials?
Item does not contain precious metal.
Does NSN 4820-00-073-1775 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 4820-00-073-1775 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963
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