NSN 4820-00-704-0666 A700891, A70089-1, 00-704-0666
Product Details | SAFETY RELIEF VALVE
4820-00-704-0666 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: A700891, A70089-1, 4820-00-704-0666, 00-704-0666, 4820007040666, 007040666
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 48 | 01 JAN 1963 | 00-704-0666 | 05488 ( VALVE, SAFETY RELIEF ) |
Drawings & Photos | NSN 4820-00-704-0666
Cross Reference | NSN 4820-00-704-0666
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| A70089-1 | 81982 | HYDRO-AIRE, INC. |
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Technical Data | NSN 4820-00-704-0666
| Characteristic | Specifications |
|---|---|
| MATERIAL | ALUMINUM ALLOY BODY STEEL CORROSION RESISTING FLOW CONTROL DEVICE RUBBER SYNTHETIC SEAT |
| STYLE DESIGNATOR | A1 STRAIGHT THRU |
| FLOW CONTROL DEVICE | POPPET |
| MAXIMUM OPERATING PRESSURE | 3000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| MAXIMUM OPERATING TEMP | -65.0 DEG FAHRENHEIT 1ST RESPONSE 275.0 DEG FAHRENHEIT 2ND RESPONSE |
| VALVE OPERATION METHOD | AUTOMATIC |
| CONNECTION TYPE | THREADED EXTERNAL TUBE 1ST END THREADED INTERNAL BOSS 2ND END |
| CONNECTION STYLE | G45 FLARELESS 1ST END G4 GASKET SEAL 2ND END |
| SEAT ANGLE | 12.0 DEGREES 1ST END 60.0 DEGREES 2ND END |
| NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.250 INCHES 1ST END 0.250 INCHES 2ND END |
| THREAD SERIES DESIGNATOR | UNF 1ST END UNF 2ND END |
| NOMINAL THREAD SIZE | 0.437 INCHES 1ST END 0.438 INCHES 2ND END |
| THREAD QUANTITY PER INCH | 20 1ST END 20 2ND END |
| THREAD CLASS | 3A 1ST END 3B 2ND END |
| THREAD DIRECTION | RIGHT-HAND 1ST END RIGHT-HAND 2ND END |
| DISK LOADING METHOD | SPRING |
| FEATURES PROVIDED | PRESSURE TIGHT OUTLET SIDE |
| MANUFACTURERS CODE | 81982 |
| DESIGN CONTROL REFERENCE | A70089-1 |
Restrictions/Controls & Freight Information | NSN 4820-00-704-0666
| 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 4820-00-704-0666
Navy| Category | Code | Description |
|---|---|---|
| Cognizance Codes | 9C | Navy-owned stocks of defense construction material Naval Inventory Control Point, Mechanicsburg |
| Source of Supply | S9C | Defense Supply Center Columbus Columbus, OH 43215 |
| Agency | DN | Department of the Navy |
| Service Organization | N | U.S. Navy |
| Acquisition Advice Codes | Y | TERMINAL ITEM #(NON-STOCKED ITEMS) Future procurement is not authorized. No wholesale stock is available for issue. 1. Requisitions will not be processed to the wholesale manager. 2. Internal Service/agency requisitioning may be continued in accordance with the Service/agency requisitioning policies. |
| Controlled Item Code | U | UNCLASSIFIED |
| Shelf Life Code | 0 | Nondeteriorative |
| Purchasing | QTY UOM |
1 EA : Each |