NSN 4820-00-956-6181 1771, 00-956-6181, 009566181
Product Details | SAFETY RELIEF VALVE
4820-00-956-6181 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: 1771, 4820-00-956-6181, 00-956-6181, 4820009566181, 009566181
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 48 | 01 JAN 1962 | 00-956-6181 | 05488 ( VALVE, SAFETY RELIEF ) |
Drawings & Photos | NSN 4820-00-956-6181
Cross Reference | NSN 4820-00-956-6181
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 1771 | 37239 | LUNKENHEIMER CO |
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Technical Data | NSN 4820-00-956-6181
| Characteristic | Specifications |
|---|---|
| MATERIAL | COPPER ALLOY OVERALL |
| STYLE DESIGNATOR | C1 ANGLE |
| FLOW CONTROL DEVICE | DISK |
| MAXIMUM OPERATING PRESSURE | 1300.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| CONNECTION TYPE | THREADED INTERNAL PIPE 1ST END THREADED INTERNAL PIPE 2ND END |
| CONNECTION STYLE | G9 PLAIN 1ST END G9 PLAIN 2ND END |
| NOMINAL PIPE SIZE ACCOMMODATED | 2.000 INCHES 1ST END 1.500 INCHES 2ND END |
| THREAD SERIES DESIGNATOR | NPT 1ST END NPT 2ND END |
| NOMINAL THREAD SIZE | 2.000 INCHES 1ST END 1.500 INCHES 2ND END |
| THREAD QUANTITY PER INCH | 11-1/2 1ST END 11-1/2 2ND END |
| THREAD DIRECTION | RIGHT-HAND 1ST END RIGHT-HAND 2ND END |
| BONNET TYPE | INSIDE SPRING |
| BONNET ATTACHMENT METHOD | INTEGRAL |
| DISK LOADING METHOD | SPRING |
| OPENING PRESSURE SETTING | 750.0 POUNDS PER SQUARE INCH |
| FEATURES PROVIDED | BONNET PACKING AND PRESSURE TIGHT OUTLET SIDE |
Restrictions/Controls & Freight Information | NSN 4820-00-956-6181
| Category | Code | Description |
|---|---|---|
| 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. |
| 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 |
|---|---|---|
| No Freight Information | ||