NSN 4820-00-451-0570 65651-09106-102, H555, 00-451-0570
Product Details | SAFETY RELIEF VALVE
4820-00-451-0570 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: 65651-09106-102, H555, 4820-00-451-0570, 00-451-0570, 4820004510570, 6565109106102, 004510570
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 48 | 17 MAY 1971 | 00-451-0570 | 05488 ( VALVE, SAFETY RELIEF ) |
Drawings & Photos | NSN 4820-00-451-0570
Demand History | NSN 4820-00-451-0570
| Part Number | Request Date | QTY | Origin |
|---|---|---|---|
| H555 | 2025-08-233 | 35 | DIBBS |
| H555 | 2025-08-222 | 35 | DIBBS |
| H555 | 2025-05-139 | 33 | DIBBS |
| H555 | 2025-05-128 | 33 | DIBBS |
| H555 | 2024-04-106 | 35 | DIBBS |
| H555 | 2024-04-95 | 35 | DIBBS |
| H555 | 2023-12-362 | 3 | DIBBS |
| H555 | 2023-10-278 | 23 | DIBBS |
| H555 | 2019-06-168 | 62 | DIBBS |
| H555 | 2019-06-155 | 62 | DIBBS |
| 6565-10-910-6102 | 2019-03-80 | 100 | United States |
| H555 | 2019-01-31 | 27 | DIBBS |
| H555 | 2019-01-13 | 65 | DIBBS |
| 4820-00-451-0570 | 2018-08-221 | 28 | DIBBS |
| 4820-00-451-0570 | 2018-04-116 | 9 | DIBBS |
| 4820-00-451-0570 | 2018-04-105 | 9 | DIBBS |
| 4820-00-451-0570 | 2018-03-74 | 19 | DIBBS |
| 4820-00-451-0570 | 2018-03-63 | 19 | DIBBS |
| 4820-00-451-0570 | 2017-04-108 | 21 | DIBBS |
| 4820-00-451-0570 | 2017-02-37 | 31 | DIBBS |
| 4820-00-451-0570 | 2016-12-350 | 23 | DIBBS |
| 4820-00-451-0570 | 2016-11-308 | 14 | DIBBS |
| 4820-00-451-0570 | 2016-08-230 | 13 | DIBBS |
| 4820-00-451-0570 | 2016-07-213 | 13 | DIBBS |
| 4820-00-451-0570 | 2015-04-103 | 11 | DIBBS |
| 4820-00-451-0570 | 2015-04-92 | 11 | DIBBS |
| 4820-00-451-0570 | 2013-09-247 | 12 | DIBBS |
| 4820-00-451-0570 | 2013-08-232 | 12 | DIBBS |
| 4820-00-451-0570 | 2013-04-94 | 15 | DIBBS |
| 4820-00-451-0570 | 2012-12-354 | 13 | DIBBS |
| 4820-00-451-0570 | 2012-04-110 | 95 | DIBBS |
| 4820-00-451-0570 | 2012-01-03 | 12 | DIBBS |
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Related Products | NSN 4820-00-451-0570
Technical Data | NSN 4820-00-451-0570
| Characteristic | Specifications |
|---|---|
| MATERIAL | STEEL COMP 303 BODY STEEL COMP 630 FLOW CONTROL DEVICE STEEL COMP 303 SEAT |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764,TYPE 303-CANCELED FED SPEC 1ST MATERIAL RESPONSE BODY AMS 5643 MFR REF 2ND MATERIAL RESPONSE FLOW CONTROL DEVICE QQ-S-764,TYPE 303-CANCELED FED SPEC 3RD MATERIAL RESPONSE SEAT |
| STYLE DESIGNATOR | B6 STRAIGHT THRU |
| FLOW CONTROL DEVICE | POPPET |
| MEDIA FOR WHICH DESIGNED | HYDRAULIC FLUID, MINERAL BASE SINGLE RESPONSE |
| MAXIMUM OPERATING PRESSURE | 35.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| MAXIMUM OPERATING TEMP | 275.0 DEG FAHRENHEIT SINGLE RESPONSE |
| VALVE DISCHARGE FLOW RATE | 6.0 GALLONS PER MINUTE |
| VALVE OPERATION METHOD | AUTOMATIC |
| CONNECTION TYPE | THREADED INTERNAL BOSS 1ST END THREADED EXTERNAL BOSS 2ND END |
| CONNECTION STYLE | G4 GASKET SEAL 1ST END G50 EXTERNAL SEAT FOR GASKET SEAL 2ND END |
| NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.500 INCHES 1ST END 0.500 INCHES 2ND END |
| THREAD SERIES DESIGNATOR | UNJF 1ST END UNF 2ND END |
| NOMINAL THREAD SIZE | 0.750 INCHES 1ST END 0.750 INCHES 2ND END |
| THREAD QUANTITY PER INCH | 16 1ST END 16 2ND END |
| THREAD CLASS | 3B 1ST END 3A 2ND END |
| THREAD DIRECTION | RIGHT-HAND 1ST END RIGHT-HAND 2ND END |
| BONNET TYPE | PACKING RETAINING |
| DISK LOADING METHOD | SPRING |
| OPENING PRESSURE SETTING | 48.0 POUNDS PER SQUARE INCH |
| FEATURES PROVIDED | PRESSURE TIGHT OUTLET SIDE |
| SPECIAL FEATURES | SECOND END DESCRIPTION IS INLET |
Restrictions/Controls & Freight Information | NSN 4820-00-451-0570
| 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 | KE | Naval ICP Philadelphia, PA 19111 |
| 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 4820-00-451-0570
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 |