NSN 4820-01-194-2648 D559A4D100, D559A-4D-100 , D559A4D-100
Product Details | SAFETY RELIEF VALVE
4820-01-194-2648 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.
Part Alternates: D559A4D100, D559A-4D-100 , D559A4D-100, 4820-01-194-2648, 01-194-2648, 4820011942648, 011942648
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 48 | 12 NOV 1984 | 01-194-2648 | 05488 ( VALVE, SAFETY RELIEF ) |
Drawings & Photos | NSN 4820-01-194-2648
Demand History | NSN 4820-01-194-2648
| Part Number | Request Date | QTY | Origin |
|---|---|---|---|
| D559A-4D-100 | 2025-07-188 | 134 | DIBBS |
| D559A-4D-100 | 2025-06-177 | 134 | DIBBS |
| D559A-4D-100 | 2025-03-69 | 79 | DIBBS |
| D559A-4D-100 | 2025-02-58 | 79 | DIBBS |
| D559A-4D-100 | 2023-02-33 | 129 | DIBBS |
| D559A-4D-100 | 2020-10-289 | 162 | DIBBS |
| D559A-4D-100 | 2020-08-240 | 56 | DIBBS |
| D559A-4D-100 | 2020-02-49 | 84 | DIBBS |
| D559A-4D-100 | 2020-02-37 | 84 | DIBBS |
| 4820-01-194-2648 | 2017-12-347 | 369 | DIBBS |
| 4820-01-194-2648 | 2016-02-47 | 500 | DIBBS |
| 4820-01-194-2648 | 2016-02-35 | 500 | DIBBS |
| 4820-01-194-2648 | 2015-12-336 | 124 | DIBBS |
| 4820-01-194-2648 | 2014-08-236 | 536 | DIBBS |
| 4820-01-194-2648 | 2014-05-148 | 293 | DIBBS |
| 4820-01-194-2648 | 2014-04-93 | 301 | DIBBS |
| 4820-01-194-2648 | 2013-03-84 | 110 | DIBBS |
| 4820-01-194-2648 | 2012-11-309 | 122 | DIBBS |
| 4820-01-194-2648 | 2012-08-226 | 91 | DIBBS |
| 4820-01-194-2648 | 2012-06-178 | 0 | DIBBS |
| 4820-01-194-2648 | 2012-05-137 | 56 | DIBBS |
| 4820-01-194-2648 | 2011-10-289 | 0 | DIBBS |
| 4820-01-194-2648 | 2011-04-105 | 83 | DIBBS |
| 4820-01-194-2648 | 2011-03-76 | 99 | DIBBS |
| 4820-01-194-2648 | 2011-02-49 | 72 | DIBBS |
| 4820-01-194-2648 | 2011-01-06 | 54 | DIBBS |
| 4820-01-194-2648 | 2010-10-280 | 99 | DIBBS |
Cross Reference | NSN 4820-01-194-2648
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| D559A-4D-100 | 91816 | CIRCOR AEROSPACE, INC. DBA CIRCLE SEAL CONTROLS |
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Related Products | NSN 4820-01-194-2648
Technical Data | NSN 4820-01-194-2648
| Characteristic | Specifications |
|---|---|
| MATERIAL | ALUMINUM ALLOY 2024 BODY |
| STYLE DESIGNATOR | C3 ANGLE |
| FLOW CONTROL DEVICE | POPPET |
| MEDIA FOR WHICH DESIGNED | AIR 1ST RESPONSE FUEL/OIL, HYDROCARBON 2ND RESPONSE HELIUM 3RD RESPONSE HYDROGEN 4TH RESPONSE NITROGEN, GASEOUS 5TH RESPONSE |
| MAXIMUM OPERATING PRESSURE | 15.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| MAXIMUM OPERATING TEMP | 280.0 DEG FAHRENHEIT SINGLE RESPONSE |
| VALVE OPERATION METHOD | AUTOMATIC |
| CONNECTION TYPE | THREADED EXTERNAL TUBE ALL ENDS |
| CONNECTION STYLE | G46A PLAIN ALL ENDS |
| THREAD SERIES DESIGNATOR | UNJ ALL ENDS |
| NOMINAL THREAD SIZE | 0.438 INCHES ALL ENDS |
| THREAD QUANTITY PER INCH | 20 ALL ENDS |
| THREAD CLASS | 3A ALL ENDS |
| THREAD DIRECTION | RIGHT-HAND ALL ENDS |
| OPENING PRESSURE SETTING | 100.0 POUNDS PER SQUARE INCH |
| ADJUSTABLE PRESSURE RANGE | 0.5 TO 150.0 POUNDS PER SQUARE INCH |
| SPECIAL FEATURES | FURNISHED WITH DEFLECTOR CAP |
Restrictions/Controls & Freight Information | NSN 4820-01-194-2648
| 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: | A | Item does not contain precious metal |
| Criticality Code: | X | The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. |
| Automatic Data Processing Equipment: | 0 | Represents items with no ADP components. NOTE: Codes 1 through 6 are only to be used when the item is Automatic Data Processing Equipment (ADPE) in its entirety and is limited to the type meeting only one of the definitions for codes 1 through 6. (See code 9) |
| 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 | CT | U.S. Army Aviation and Missile Command (AIR) Redstone Arsenal, AL 35898-5230 |
| Air Dimension Code | A | Shipment is not a consolidation and does not exceed 72 inches in any dimension. |
| Air Commodity | V | Vehicles, machinery, shop and warehouse equipment and supplies, including special tools and equipment, ground servicing and special purpose vehicles, marine equipment and supplies, repair and maintenance parts for the above. |
| 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 4820-01-194-2648
Army
Navy| Category | Code | Description |
|---|---|---|
| Materiel Category and Inventory Manager | J | Ground Forces Support Materiel (DLA/GSA Items) |
| Appropriation and Budget Activity | 2 | Stock Fund Secondary Items |
| Management Inventory Segment | 2 | NONREPARABLE ITEMS (Exclusive of Insurance and Provisioning Items). This code will be used to identify items which are not reparable. |
| Specific Group/Generic Code | B | Rotary Wing Aircraft |
| Weapons Systems/End Item or Homogeneous Group | BJ | AH-64 Airframe |
| Accounting Requirements Code | X | Expendable item. An item of Army property coded with an ARC of ?X? in the AMDF. Expendable items require no formal accountability after issue from a stock record account. Commercial and fabricated items similar to items coded ?X? in the AMDF are considered expendable items. |
| Source of Supply | SMS | Defense Logistics Agency Enterprise Business Systems |
| Agency | DA | Department of the Army |
| Service Organization | A | U.S. Army |
| Reparability | Z | This is a nonreparable item. If condemned or economically unserviceable, then dispose at the level authorized replace the item. |
| Acquisition Advice Codes | Z | INSURANCE/NUMERIC STOCKAGE OBJECTIVE ITEM # Items which may be required occasionally or intermittently, and prudence requires that a nominal quantity of materiel be stocked due to the essentiality or the lead time of the item. 1. The item is centrally managed, stocked, and issued. 2. Requisitions will be submitted in accordance with IMM/Service requisitioning procedures. |
| Controlled Item Code | U | UNCLASSIFIED |
| Shelf Life Code | 0 | Nondeteriorative |
| Purchasing | QTY UOM |
1 EA : Each |
| 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 | Z | INSURANCE/NUMERIC STOCKAGE OBJECTIVE ITEM # Items which may be required occasionally or intermittently, and prudence requires that a nominal quantity of materiel be stocked due to the essentiality or the lead time of the item. 1. The item is centrally managed, stocked, and issued. 2. Requisitions will be submitted in accordance with IMM/Service requisitioning procedures. |
| Controlled Item Code | U | UNCLASSIFIED |
| Shelf Life Code | 0 | Nondeteriorative |
| Purchasing | QTY UOM |
1 EA : Each |