Fluid Pressure Regulating Valve
0781-6023
(NSN) National Stock Number
4820-00-171-9821
Federal Supply Classification
4820 Nonpowered Valves
Item Name Code
27565
Schedule B Code
8481809015
Summary
Straight thru body style, brass stem material, automatic relief valve and cylinder gage and delivery gage and indicator furnished items, hydrogen media for which designed, threaded internal gas cylinder first end connection type, swivel nut, gas first end style designator
| DAC | HCC | DMIL | RNCC |
|---|---|---|---|
| 6 | - | - | 3 |
| RNVC | SADC | MSDS | RNAAC |
|---|---|---|---|
| 2 | - | - | AX |
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.Stem Material
brass
Details
The element, compound,or mixture of which the stem is fabricated,excluding any surface treatment. please use mrc cybn or matt and use of isac in place of this discontinued mrc.Furnished Items
automatic relief valve and cylinder gage and delivery gage and indicator
Details
Items furnished as accessories which are not specified elsewhere.Media For Which Designed
hydrogen
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 internal gas cylinder
Details
A narrative description of the type of end connection.First End Style Designator
swivel nut, gas
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the end.First End Thread Size And Series/Type Designator
0.830-14 ngo
Details
Designates the thread diameter,series/type,and number of threads per specific measurement scale.First End Thread Direction
left-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 external tube
Details
A narrative description of the type of end connection.Second End Style Designator
flareless
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the end.Second End Outside Diameter Tube Accommodated
0.562 inches nominal
Details
The length of a straight line which passes through the center of the accommodated tube,and terminates at the outside circumference.Second 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.Second End Thread Class
3a
Details
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.Second End Thread Direction
left-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.Seat Material
brass
Details
The element,compound,or mixture of which the seating surfaces are fabricated. please use mrc cybm or matt and use of isac in place of this discontinued mrc.Flow Control Device
diaphragm
Details
The part that controls the flow through the item.Flow Control Device Material
rubber, chloroprene
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.First End Thread Pitch Diameters
+0.7750 to 0.7786 inches
Details
The minimum and maximum pitch diameter limits of a straight screw thread.Regulation Type
manual single stage
Details
Indicates the basic design type used for regulating the item.Manual Control Method
lever
Details
The means used to manually adjust the item.Valve Loading Method
weight
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
1600.0 pounds per square inch
Details
The maximum pressure of the media on the inlet side at which an item is designed to operate.Filter
not 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 h1 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.Departure From Cited Designator
as modified by the dial range
Details
The variation when the item is in conformity with a type designator covered by a specification or standard,except in regard to one or more technical differentiating characteristics.Master-Cross Reference List
| Part | CAGE | DAC | HCC | RNCC | RNVC | MSDS | RNAAC |
|---|---|---|---|---|---|---|---|
| MILR19180 | 81349 | 3 | - | 5 | 9 | - | 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 |
|---|---|---|---|
| 61770 | - | J | - |
| RVC | WCC | TCC | SHC |
|---|---|---|---|
| - | 653 | Z | 9 |
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Manufacturer
FAQs
Frequently asked questions for NSN 4820-00-171-9821
What is the NIIN of the NSN 4820-00-171-9821?
The National Item Identification Number (NIIN) of the NSN 4820-00-171-9821 is 00-171-9821
When the NSN 4820-00-171-9821 was assigned to the Federal Catalog?
It was assigned 61 years ago, on Tue, Jan 1, 1963
Does the NSN 4820-00-171-9821 contain any precious metals?
Type/content is unknown
Does the NSN 4820-00-171-9821 contain any hazardous material?
No data in HMIRS
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