NSN 4820-00-171-9819 SR450B540, SR450B-540, ESS440540
Product Details | FLUID PRESSURE REGULATING VALVE
4820-00-171-9819 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.20248100015Valves, Powered48200018Valves, Nonpowered
Part Alternates: SR450B540, SR450B-540, ESS440540, ESS4-40-540 , MILR19180, 07815154, 0781-5154 , 45R1TYPED, 4820-00-171-9819, 00-171-9819, 4820001719819, 001719819
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 48 | 01 JAN 1963 | 00-171-9819 | 27565 ( VALVE, REGULATING, FLUID PRESSURE ) |
Drawings & Photos | NSN 4820-00-171-9819
Demand History | NSN 4820-00-171-9819
| Part Number | Request Date | QTY | Origin |
|---|---|---|---|
| 0781-3600 | 2025-06-167 | 38 | DIBBS |
| ESS4-40-540 | 2025-06-167 | 38 | DIBBS |
| 0781-3600 | 2025-06-156 | 38 | DIBBS |
| ESS4-40-540 | 2025-06-156 | 38 | DIBBS |
| 0781-3600 | 2023-10-299 | 53 | DIBBS |
| ESS4-40-540 | 2023-10-299 | 53 | DIBBS |
| 0781-3600 | 2023-02-33 | 49 | DIBBS |
| ESS4-40-540 | 2023-02-33 | 49 | DIBBS |
| 0781-3600 | 2022-04-118 | 48 | DIBBS |
| ESS4-40-540 | 2022-04-118 | 48 | DIBBS |
| 0781-3600 | 2022-03-62 | 23 | DIBBS |
| ESS4-40-540 | 2022-03-62 | 23 | DIBBS |
| 0781-3600 | 2021-05-147 | 38 | DIBBS |
| ESS4-40-540 | 2021-05-147 | 38 | DIBBS |
| 0781-5154 | 2019-01-31 | 99 | DIBBS |
| ESS4-40-540 | 2019-01-31 | 99 | DIBBS |
| 4820-00-171-9819 | 2018-06-179 | 73 | DIBBS |
| 4820-00-171-9819 | 2016-06-154 | 57 | DIBBS |
| 4820-00-171-9819 | 2016-01-06 | 43 | DIBBS |
| 4820-00-171-9819 | 2015-06-154 | 40 | DIBBS |
| 4820-00-171-9819 | 2014-04-110 | 87 | DIBBS |
| 4820-00-171-9819 | 2013-11-309 | 23 | DIBBS |
| 4820-00-171-9819 | 2013-07-195 | 24 | DIBBS |
| 4820-00-171-9819 | 2013-03-67 | 26 | DIBBS |
| 4820-00-171-9819 | 2012-11-313 | 21 | DIBBS |
| 4820-00-171-9819 | 2012-08-237 | 1 | DIBBS |
| 4820-00-171-9819 | 2010-07-187 | 19 | DIBBS |
| 4820-00-171-9819 | 2008-11-318 | 17 | DIBBS |
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Related Products | NSN 4820-00-171-9819
Technical Data | NSN 4820-00-171-9819
| Characteristic | Specifications |
|---|---|
| BODY MATERIAL | BRASS |
| FLOW CONTROL DEVICE | STEM AND INTEGRAL DISK |
| FLOW CONTROL DEVICE MATERIAL | STEEL, CORROSION RESISTING |
| END CONNECTION QUANTITY | 2 |
| FIRST END CONNECTION TYPE | THREADED EXTERNAL TUBE |
| FIRST END STYLE DESIGNATOR | D2 INVERTED FLARE |
| FIRST END OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.375 INCHES NOMINAL |
| FIRST END THREAD SIZE AND SERIES/TYPE DESIGNATOR | 9/16-18 UNF |
| FIRST END THREAD CLASS | 2A |
| FIRST END THREAD DIRECTION | RIGHT-HAND |
| FIRST END SEAT ANGLE IN DEG | 30.0 |
| SECOND END RELATIONSHIP WITH FIRST END | NOT IDENTICAL |
| SECOND END CONNECTION TYPE | THREADED INTERNAL GAS CYLINDER |
| SECOND END STYLE DESIGNATOR | B10 SWIVEL NUT, GAS |
| SECOND END THREAD SIZE AND SERIES/TYPE DESIGNATOR | 0.908-14 NGO |
| SECOND END THREAD PITCH DIAMETERS | 0.8616 TO 0.8652 INCHES |
| SECOND END THREAD DIRECTION | RIGHT-HAND |
| SECOND END SEAT RADIUS | 0.281 INCHES NOMINAL |
| BODY STYLE | A1 STRAIGHT THRU |
| MEDIA FOR WHICH DESIGNED | OXYGEN, GASEOUS |
| REGULATION TYPE | MANUAL SINGLE STAGE |
| MANUAL CONTROL METHOD | TEE HANDLE |
| VALVE LOADING METHOD | SPRING |
| MAXIMUM INLET PRESSURE RATING | 2000.0 POUNDS PER SQUARE INCH |
| OUTLET PRESSURE RANGE | 0.0 TO 40.0 POUNDS PER SQUARE INCH |
| OUTLET PRESSURE ACCURACY RATING | 5.000 POUNDS PER SQUARE INCH |
| FILTER | INCLUDED |
| FURNISHED ITEMS | CYLINDER GAGE AND DELIVERY GAGE |
| (NON-CORE DATA) DIAL OUTSIDE DIAMETER | 2.000 INCHES AND 2.500 INCHES |
| (NON-CORE DATA) SCALE UNIT OF MEASURE INSCRIPTION | POUNDS PER SQUARE FOOT AND POUNDS PER SQUARE INCH |
| (NON-CORE DATA) DIAL RANGE | 0.0 TO 60.0 AND 100.0 TO 4000.0 |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND OW1 CLASS |
| MANUFACTURERS CODE | 81349 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MILR19180 |
Restrictions/Controls & Freight Information | NSN 4820-00-171-9819
| Category | Code | Description |
|---|---|---|
| Shelf-Life Code: | 0 | Nondeteriorative |
| Hazardous Material Indicator Code | N | There is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials |
| Demilitarization Code: | A | Non-Munitions List Item/ Non-Strategic List Item - Demilitarization not required. |
| Controlled Inventory Item Code: | U | UNCLASSIFIED |
| Precious Metals Indicator Code: | U | Precious metal type is unknown |
| Criticality Code: | X | The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. |
| Category | Code | Description |
|---|---|---|
| NMF Description | 127220 | PRESSURE REG/RED/RELIEF VALVES NOI |
| Less than car load rating | ||
| Less than truck load rating | P | 77.5 |
| Water commodity Code | 594 | unknown |
| Originating Activity Code | XX | |
| Air Dimension Code | A | Shipment is not a consolidation and does not exceed 72 inches in any dimension. |
| Air Commodity | B | Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials. |
| Air Special Handling | Z | No special handling required. |
| Special Handling Code | 9 | unknonwn |
| HAZMAT | ||
| Type of Cargo | Z | No special type of cargo code applicable |
Management | NSN 4820-00-171-9819
Navy| Category | Code | Description |
|---|---|---|
| Cognizance Codes | 9B | Navy-owned stocks of DLA material Naval Inventory Control Point, Mechanicsburg |
| Source of Supply | SMS | Defense Logistics Agency Enterprise Business Systems |
| Agency | DN | Department of the Navy |
| Service Organization | N | U.S. Navy |
| Acquisition Advice Codes | D | DoD INTEGRATED MATERIEL-MANAGED, STOCKED, AND ISSUED # Issue, transfer, or shipment is not subject to specialized controls other than those imposed by the Integrated Materiel Manager/Service supply policy. 1. The item is centrally managed, stocked, and issued. 2. Requisitions must contain the fund citation required to acquire the item. Requisitions will be submitted in accordance with Integrated Materiel Manager(IMM)/Service requisitioning procedures. |
| Controlled Item Code | U | UNCLASSIFIED |
| Shelf Life Code | 0 | Nondeteriorative |
| Purchasing | QTY UOM |
1 EA : Each |