Fluid Pressure Regulating Valve
ESS4-40-540
(NSN) National Stock Number
4820-00-171-9819
Federal Supply Classification
4820 Nonpowered Valves
Item Name Code
27565
Schedule B Code
8481809015
Summary
Straight thru body style, cylinder gage and delivery gage furnished items, oxygen, gaseous media for which designed, threaded external tube first end connection type, inverted flare first end style designator, 0.375 inches nominal first end outside diameter tube accommodated
| DAC | HCC | DMIL | RNCC |
|---|---|---|---|
| 6 | - | - | 3 |
| RNVC | SADC | MSDS | RNAAC |
|---|---|---|---|
| 2 | - | - | ZZ |
Identification
A valve designed to automatically maintain within close limits a predetermined outlet pressure which may be adjustable within a specified range regardless of the higher fluctuating or constant inlet pressure. It is designed for use with compressed gas(es) and various liquids and may include gauges. It may be inline or cartridge (manifold) design. Excludes:regulator, pressure, medical gas administration apparatus; regulator, oxygen, barometric continuous flow; regulator, oxygen demand; regulator, oxygen diluter demand; and valve(1), fluid pressure regulating, aircraft.
| INC | FIIG | Concept | Condition |
|---|---|---|---|
| 27565 | A21100 | 1 | 2 |
Specifications
Body Style
straight thru
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the body.Furnished Items
cylinder gage and delivery gage
Details
Items furnished as accessories which are not specified elsewhere.Media For Which Designed
oxygen, gaseous
Details
The type of service with which the item is designed to be used. please use mrc meda in place of this discontinued mrc.First End Connection Type
threaded external tube
Details
A narrative description of the type of end connection.First End Style Designator
inverted flare
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the end.First End Outside Diameter Tube Accommodated
0.375 inches nominal
Details
The length of a straight line which passes through the center of the accommodated tube,and terminates at the outside circumference.First End Thread Size And Series/Type Designator
9/16-18 unf
Details
Designates the thread diameter,series/type,and number of threads per specific measurement scale.First End Thread Class
2a
Details
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.First End Thread Direction
right-hand
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.Second End Relationship With First End
not identical
Details
Indicates whether or not the second end is identical to the first end. please use mrc cqbb in place of this discontinued mrc.Second End Connection Type
threaded internal gas cylinder
Details
A narrative description of the type of end connection.Second End Style Designator
swivel nut, gas
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the end.Second End Thread Size And Series/Type Designator
0.908-14 ngo
Details
Designates the thread diameter,series/type,and number of threads per specific measurement scale.Second End Thread Direction
right-hand
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.First End Seat Angle In Deg
30.0
Details
The angle of the end surface upon which the mated surface seats,expressed in degrees. please use mrc cqrb with isac table 0036 in place of this discontinued mrc.Second End Seat Radius
0.281 inches nominal
Details
The radius of the end surface upon which the mated surface seats.Flow Control Device
stem and integral disk
Details
The part that controls the flow through the item.Flow Control Device Material
steel, corrosion resisting
Details
The element,compound,or mixture of which the flow control device is fabricated. please use mrc matt with isac in place of this discontinued mrc.End Connection Quantity
2
Details
The number of end connections included in the item.Second End Thread Pitch Diameters
+0.8616 to 0.8652 inches
Details
The minimum and maximum pitch diameter limits of a straight screw thread.Outlet Pressure Range
+0.0 to 40.0 pounds per square inch
Details
The minimum to maximum limits of outlet pressure of the item.Regulation Type
manual single stage
Details
Indicates the basic design type used for regulating the item.Manual Control Method
tee handle
Details
The means used to manually adjust the item.Valve Loading Method
spring
Details
The means of providing resistance to the media passing through a valve,whereby the valve is actuated to regulate the flow.Maximum Inlet Pressure Rating
2000.0 pounds per square inch
Details
The maximum pressure of the media on the inlet side at which an item is designed to operate.Outlet Pressure Accuracy Rating
5.000 pounds per square inch
Details
The rated variance of the outlet pressure from the set pressure.Filter
included
Details
An indication of whether or not a filter is included.Material
copper alloy body
Details
The chemical compound or mechanical mixture properties of which the item is fabricated.Nondefinitive Spec/Std Data
1 type and ow1 class
Details
The number,letter,or symbol that indicates the type,style,grade,class,and the like,of an item in a nonidentifying specification or standard.Master-Cross Reference List
| Part | CAGE | DAC | HCC | RNCC | RNVC | MSDS | RNAAC |
|---|---|---|---|---|---|---|---|
| 45R1TYPED | 99993 | 5 | - | 3 | 1 | - | AX |
| 0781-3600 | 63026 | 6 | - | 3 | 2 | - | ZZ |
| 0781-5154 | 63026 | 6 | - | 5 | 9 | - | ZZ |
| SR450B-540 | 63026 | 6 | - | 5 | 9 | - | ZZ |
| MILR19180 | 81349 | 3 | - | 4 | 1 | - | AX |
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
| HMIC | PMIC | ESD/EMI | Criticality |
|---|---|---|---|
| N | U | - | - |
Freight
Universal / National Freight and Handling Information
| UFC | HMC | LTL | LCL |
|---|---|---|---|
| 64490 | - | P | - |
| RVC | WCC | TCC | SHC |
|---|---|---|---|
| - | 594 | Z | 9 |
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Manufacturer
FAQs
Frequently asked questions for NSN 4820-00-171-9819
What is the NIIN of the NSN 4820-00-171-9819?
The National Item Identification Number (NIIN) of the NSN 4820-00-171-9819 is 00-171-9819
When the NSN 4820-00-171-9819 was assigned to the Federal Catalog?
It was assigned 61 years ago, on Tue, Jan 1, 1963
Does the NSN 4820-00-171-9819 contain any precious metals?
Type/content is unknown
Does the NSN 4820-00-171-9819 contain any hazardous material?
No data in HMIRS
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