Safety Relief Valve
667536
(NSN) National Stock Number
4820-00-095-2040
Federal Supply Classification
4820 Nonpowered Valves
Item Name Code
05488
Schedule B Code
8481400000
Summary
3b 1st end thread class, right-hand 1st end thread direction, poppet flow control device, spring disk loading method, bonded renewable seat ring type, gasket seal(boss) 1st end connection style
| DAC | HCC | DMIL | RNCC |
|---|---|---|---|
| 2 | - | - | 1 |
| RNVC | SADC | MSDS | RNAAC |
|---|---|---|---|
| 2 | - | - | MF |
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 Class
3b 1st end
Details
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.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.Disk Loading Method
spring
Details
The means of closing the item when inlet pressure decreases.Renewable Seat Ring Type
bonded
Details
Indicates the type of renewable seating ring in the item.Connection Style
gasket seal(boss) 1st end
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the connection.Valve Operation Method
manual
Details
The means used to control the operation of the valve.Connection Type
threaded internal boss 1st end
Details
Indicates the type of connection/s/.Features Provided
pressure tight outlet side
Details
Those features,not otherwise specified,which may be required for proper functioning of the item.Thread Quantity Per Inch
20 1st end
Details
The number of threads on the item per linear inch measured on a line parallel to the thread axis.Maximum Operating Pressure
85.0 pounds per square inch single response
Details
The maximum pressure at which the item is rated for operation.Nominal Thread Size
0.437 inches 1st end
Details
A designation that is used for the purpose of general identification of the thread.Opening Pressure Setting
3.5 pounds per square inch
Details
The predetermined pressure at which the item is calibrated to open.Media For Which Designed
air single response
Details
The type of media for which the item is designed.Style Designator
straight thru
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.Thread Series Designator
unf 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.Master-Cross Reference List
| Part | CAGE | DAC | HCC | RNCC | RNVC | MSDS | RNAAC |
|---|---|---|---|---|---|---|---|
| 211421 | 81982 | 2 | - | 3 | 2 | - | MF |
| 135-00560 | 01276 | 2 | - | 3 | 2 | - | ZZ |
| 135-00560 | 79470 | 2 | - | 5 | 9 | - | MF |
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 |
|---|---|---|---|
| 1 | 594 | Z | 9 |
Certified Supplier
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Manufacturer
LOCKHEED MARTIN CORP DIV LOCKHEED MARTIN AERONAUTICS COMPANY
CAGE: 98897
MARIETTA
, GA
, 30063-0001
UNITED STATES
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FAQs
Frequently asked questions for NSN 4820-00-095-2040
What is the NIIN of the NSN 4820-00-095-2040?
The National Item Identification Number (NIIN) of the NSN 4820-00-095-2040 is 00-095-2040
When the NSN 4820-00-095-2040 was assigned to the Federal Catalog?
It was assigned 61 years ago, on Tue, Jan 1, 1963
Does the NSN 4820-00-095-2040 contain any precious metals?
Does not contain precious metal
Does the NSN 4820-00-095-2040 contain any hazardous material?
No data in HMIRS
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