4820-00-121-9623
Find complete technical information, availability, and procurement data for: 4820-00-121-9623
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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.
right-hand 1st end thread direction, spring disk loading method, right-hand 2nd end thread direction, plain,optional end(pipe) 2nd end connection style, 0.250 inches 2nd end nominal pipe size accommodated
Product Characteristics
Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.
- Nominal Pipe Size Accommodated
- 0.250 inches 2nd end
- Thread Direction
- right-hand 1st end
- Thread Direction
- right-hand 2nd end
- Disk Loading Method
- spring
- Connection Style
- plain,optional end(pipe) 2nd end
- Valve Operation Method
- automatic
- Connection Type
- threaded external tube 1st end
- Connection Type
- threaded internal pipe 2nd end
- Mounting Facility
- threaded fastener
- Features Provided
- pressure tight outlet side
- Thread Quantity Per Inch
- 20 2nd end
- Thread Quantity Per Inch
- 20 1st end
- Maximum Operating Pressure
- 4500.0 pounds per square inch single response
- Nominal Thread Size
- 0.437 inches 1st end
- Nominal Thread Size
- 0.438 inches 2nd end
- Seat Angle
- 37.0 degrees 1st end
- Nominal Outside Diameter Tube Accommodated
- 0.250 inches 1st end
- Material
- aluminum alloy body
- Material
- steel corrosion resisting seat
- Media For Which Designed
- fuel/oil, hydrocarbon single response
- Style Designator
- angle
- Thread Series Designator
- unf 1st end
- Thread Series Designator
- unf 2nd end
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 1650-00-219-0489 | No Name Available | 01/01/1963 |
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 |
|---|---|
| 4085700-11 | Safety Relief Valve |
| S4085700-11 | Safety Relief Valve |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 4820-00-121-9623?
Does the NSN 4820-00-121-9623 have a Schedule B code assigned?
Does NSN 4820-00-121-9623 require demilitarization?
Does NSN 4820-00-121-9623 contain precious materials?
Does NSN 4820-00-121-9623 contain hazardous materials?
When the NSN 4820-00-121-9623 was assigned to the Federal Catalog?
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