NSN 4820-01-498-9252 20256, 20256H01S0040/CD17083, 20256H01S0040CD17083
Product Details | SAFETY RELIEF VALVE
4820-01-498-9252 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: 20256, 20256H01S0040/CD17083, 20256H01S0040CD17083, 4820-01-498-9252, 01-498-9252, 4820014989252, 014989252
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 48 | 08 JUL 2002 | 01-498-9252 | 05488 ( VALVE, SAFETY RELIEF ) |
Drawings & Photos | NSN 4820-01-498-9252
Demand History | NSN 4820-01-498-9252
| Part Number | Request Date | QTY | Origin |
|---|---|---|---|
| 2025601S0040 | 2025-10-299 | 1 | DIBBS |
| 20256H01S0040/CD17083 | 2025-10-299 | 1 | DIBBS |
| 2025601S0040 | 2025-08-217 | 1 | DIBBS |
| 20256H01S0040/CD17083 | 2025-08-217 | 1 | DIBBS |
| 2025601S0040 | 2022-12-345 | 1 | DIBBS |
| 20256H01S0040/CD17083 | 2022-12-345 | 1 | DIBBS |
| 2025601S0040 | 2022-08-242 | 1 | DIBBS |
| 20256H01S0040/CD17083 | 2022-08-242 | 1 | DIBBS |
| 2025601S0040 | 2022-01-06 | 1 | DIBBS |
| 20256H01S0040/CD17083 | 2022-01-06 | 1 | DIBBS |
| 20256H01S0040/CD17083 | 2020-08-226 | 1 | DIBBS |
| 20256H01S0040/CD17083 | 2020-07-189 | 1 | DIBBS |
| 20256H01S0040/CD17083 | 2020-03-76 | 1 | DIBBS |
| 20256H01S0040/CD17083 | 2019-08-241 | 1 | DIBBS |
| 4820-01-498-9252 | 2016-08-229 | 1 | DIBBS |
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NSNs for Compare ( up to 4 ): Add 4820-01-498-9252
Related Products | NSN 4820-01-498-9252
Technical Data | NSN 4820-01-498-9252
| Characteristic | Specifications |
|---|---|
| MATERIAL | NICKEL ALLOY BODY NICKEL ALLOY SEAT NICKEL STEM |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-288 COMP A ASSN STD SINGLE MATERIAL RESPONSE BODY QQ-N-288 COMP A ASSN STD SINGLE MATERIAL RESPONSE SEAT QQ-N-281 CL A OR B ASSN STD SINGLE MATERIAL RESPONSE STEM |
| STYLE DESIGNATOR | C1 ANGLE |
| VALVE OPERATION METHOD | AUTOMATIC |
| BONNET TYPE | INSIDE SPRING |
| BONNET ATTACHMENT METHOD | BOLTED |
| DISK LOADING METHOD | SPRING |
| III END ITEM IDENTIFICATION | LOS ANGELES CLASS SSN (688) |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | 2 INCH RELIEF VALVE TYPE 1551-T |
Restrictions/Controls & Freight Information | NSN 4820-01-498-9252
| Category | Code | Description |
|---|---|---|
| Shelf-Life Code: | U | 96 months |
| 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: | D | Munitions List Item or Commerce Control List Item. Demilitarization required. Total destruction of the item and components so as to preclude restoration or repair to a usable condition by melting, cutting, tearing, scratching, crushing, breaking, punching, neutralizing, etc. (As an alternate, burial or deep water dumping may be used when coordinated with the DoD Demilitarization Program Office.) |
| Controlled Inventory Item Code: | 7 | NON-SENSITIVE (SRC-N/A) - UNCLASSIFIED AA&E: OR ITEMS ASSIGNED A DEMILITARIZATION CODE OTHER THAN A, B, Q, OR P FOR WHICH ANOTHER CIIC IS INAPPROPRIATE. (NOTE: THE LOSS, THEFT, UNLAWFUL DISPOSITION, AND/OR RECOVERY OF AN ITEM WITH CIIC 7 WILL BE INVESTIGATED IN ACCORDANCE WITH DOD-4000-25-2-M AND DOD 7200.14-R, VOLUME 12, CHAPTER 7). |
| 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 | AX | Defense Supply Center Columbus Columbus, OH 43216-5000 |
| 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 4820-01-498-9252
Navy| Category | Code | Description |
|---|---|---|
| Cognizance Codes | 3B | Navy-owned stocks of field level repairable 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 |
| Reparability | D | Field Level Reparables |
| Acquisition Advice Codes | J | NOT STOCKED, CENTRALLY PROCURED # (NON-STOCKED ITEMS) IMM/Service centrally managed but not stocked item. Procurement will be initiated only after receipt of a requisition. |
| Controlled Item Code | 7 | NON-SENSITIVE (SRC-N/A) - UNCLASSIFIED AA&E: OR ITEMS ASSIGNED A DEMILITARIZATION CODE OTHER THAN A, B, Q, OR P FOR WHICH ANOTHER CIIC IS INAPPROPRIATE. (NOTE: THE LOSS, THEFT, UNLAWFUL DISPOSITION, AND/OR RECOVERY OF AN ITEM WITH CIIC 7 WILL BE INVESTIGATED IN ACCORDANCE WITH DOD-4000-25-2-M AND DOD 7200.14-R, VOLUME 12, CHAPTER 7). |
| Shelf Life Code | U | 96 months |
| Purchasing | QTY UOM |
1 EA : Each |