Safety Relief Valve
876961-00
(NSN) National Stock Number
4820-00-030-6171
Federal Supply Classification
4820 Nonpowered Valves
Item Name Code
05488
Schedule B Code
8481400000
Summary
Right-hand 1st end thread direction, poppet flow control device, 250.0 deg fahrenheit 2nd response maximum operating temp, -40.0 deg fahrenheit 1st response maximum operating temp, plain (pipe) 1st end connection style, automatic valve operation method
| DAC | HCC | DMIL | RNCC |
|---|---|---|---|
| 9 | - | - | 5 |
| RNVC | SADC | MSDS | RNAAC |
|---|---|---|---|
| 9 | - | - | XB |
Identification
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.
| INC | FIIG | Concept | Condition |
|---|---|---|---|
| 05488 | A046B0 | 1 | 2 |
Specifications
Thread Direction
right-hand 1st end
Details
The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.Flow Control Device
poppet
Details
The part that controls the flow through the item.Maximum Operating Temp
250.0 deg fahrenheit 2nd response
Details
The maximum temperature at which the item is rated to operate for an extended period of time.Maximum Operating Temp
-40.0 deg fahrenheit 1st response
Details
The maximum temperature at which the item is rated to operate for an extended period of time.Connection Style
plain (pipe) 1st end
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the connection.Valve Operation Method
automatic
Details
The means used to control the operation of the valve.Connection Type
threaded external pipe 1st end
Details
Indicates the type of connection/s/.Adjustable Pressure Range
+0.5 to 2.4 pounds per square inch
Details
The minimum to maximum pressures at which the item may be set to open.Maximum Operating Pressure
200.0 pounds per square inch single response
Details
The maximum pressure at which the item is rated for operation.Nominal Thread Size
0.125 inches 1st end
Details
A designation that is used for the purpose of general identification of the thread.Opening Pressure Setting
10.0 pounds per square inch
Details
The predetermined pressure at which the item is calibrated to open.Material
steel corrosion resisting body
Details
The chemical compound or mechanical mixture properties of which the item is fabricated.Media For Which Designed
acetylene 2nd response
Details
The type of media for which the item is designed.Media For Which Designed
air 1st response
Details
The type of media for which the item is designed.Media For Which Designed
ammonia, gaseous 3rd response
Details
The type of media for which the item is designed.Media For Which Designed
hydrogen 5th response
Details
The type of media for which the item is designed.Media For Which Designed
refrigerant 12 4th response
Details
The type of media for which the item is designed.Style Designator
safety relief
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.Thread Series Designator
npt 1st end
Details
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.Furnished Items And Quantity
1 deflector cap
Details
The name and number of those parts furnished with the item of supply that have not been specified elsewhere.Master-Cross Reference List
| Part | CAGE | DAC | HCC | RNCC | RNVC | MSDS | RNAAC |
|---|---|---|---|---|---|---|---|
| D559T1M10 | 91816 | 5 | - | 3 | 2 | - | SE |
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
| HMIC | PMIC | ESD/EMI | Criticality |
|---|---|---|---|
| N | A | - | - |
Freight
Universal / National Freight and Handling Information
| UFC | HMC | LTL | LCL |
|---|---|---|---|
| 64490 | - | P | P |
| RVC | WCC | TCC | SHC |
|---|---|---|---|
| - | 594 | Z | 9 |
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Manufacturer
FAQs
Frequently asked questions for NSN 4820-00-030-6171
What is the NIIN of the NSN 4820-00-030-6171?
The National Item Identification Number (NIIN) of the NSN 4820-00-030-6171 is 00-030-6171
When the NSN 4820-00-030-6171 was assigned to the Federal Catalog?
It was assigned 52 years ago, on Wed, Nov 1, 1972
Does the NSN 4820-00-030-6171 contain any precious metals?
Does not contain precious metal
Does the NSN 4820-00-030-6171 contain any hazardous material?
No data in HMIRS
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