NSN 4820-00-836-4318 620B48, 620B4-8, 9197576
Product Details | SAFETY RELIEF VALVE
4820-00-836-4318 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: 620B48, 620B4-8, 9197576, 4820-00-836-4318, 00-836-4318, 4820008364318, 008364318
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 48 | 01 JAN 1962 | 00-836-4318 | 05488 ( VALVE, SAFETY RELIEF ) |
Drawings & Photos | NSN 4820-00-836-4318
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Related Products | NSN 4820-00-836-4318
Technical Data | NSN 4820-00-836-4318
| Characteristic | Specifications |
|---|---|
| MATERIAL | ALUMINUM ALLOY 2017 BODY STEEL COMP 303 FLOW CONTROL DEVICE STEEL COMP 303 SEAT STEEL COMP 303 STEM |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/5,ALLOY 2017,T4 FED SPEC SINGLE MATERIAL RESPONSE BODY QQ-S-763,CLASS 303,CONDA FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE QQ-S-763,CLASS 303,COND A FED SPEC SINGLE MATERIAL RESPONSE SEAT QQ-S-763,CLASS 303,COND A FED SPEC SINGLE MATERIAL RESPONSE STEM |
| SURFACE TREATMENT | ANODIZE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TYPE 2,CALSS 1 MIL SPEC SINGLE TREATMENT RESPONSE |
| STYLE DESIGNATOR | C1 ANGLE |
| FLOW CONTROL DEVICE | POPPET |
| MEDIA FOR WHICH DESIGNED | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| MAXIMUM OPERATING PRESSURE | 250.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| MAXIMUM OPERATING TEMP | 85.0 DEG FAHRENHEIT SINGLE RESPONSE |
| VALVE OPERATION METHOD | AUTOMATIC |
| POWER DRIVE OPERATING PRESSURE | 125.0 POUNDS PER SQUARE INCH NOMINAL |
| CONNECTION TYPE | THREADED INTERNAL BOSS ALL ENDS |
| CONNECTION STYLE | G4 GASKET SEAL ALL ENDS |
| NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.500 INCHES ALL ENDS |
| THREAD SERIES DESIGNATOR | UNJF ALL ENDS |
| NOMINAL THREAD SIZE | 0.750 INCHES ALL ENDS |
| THREAD CLASS | 3B ALL ENDS |
| THREAD DIRECTION | RIGHT-HAND ALL ENDS |
| BONNET TYPE | INSIDE SPRING |
| BONNET ATTACHMENT METHOD | INTEGRAL |
| DISK LOADING METHOD | SPRING |
| OPENING PRESSURE SETTING | 125.0 POUNDS PER SQUARE INCH |
| ADJUSTABLE PRESSURE RANGE | 0.0 TO 250.0 POUNDS PER SQUARE INCH |
| FEATURES PROVIDED | PRESSURE TIGHT OUTLET SIDE |
| TEST DATA DOCUMENT | 18876-9197576 DRAWING |
Restrictions/Controls & Freight Information | NSN 4820-00-836-4318
| 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: | 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. |
| Category | Code | Description |
|---|---|---|
| No Freight Information | ||