NSN 4820-00-155-7681 5120T12TB30, 00-155-7681, 001557681
Product Details | SAFETY RELIEF VALVE
4820-00-155-7681 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: 5120T12TB30, 4820-00-155-7681, 00-155-7681, 4820001557681, 001557681
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 48 | 26 JAN 1973 | 00-155-7681 | 05488 ( VALVE, SAFETY RELIEF ) |
Drawings & Photos | NSN 4820-00-155-7681
Cross Reference | NSN 4820-00-155-7681
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 5120T12TB30 | 91816 | CIRCOR AEROSPACE, INC. DBA CIRCLE SEAL CONTROLS |
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Technical Data | NSN 4820-00-155-7681
| Characteristic | Specifications |
|---|---|
| MATERIAL | STEEL COMP 303 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | FEDSTD66,AISI303/SAE30303 FED STD ALL MATERIAL RESPONSES OVERALL |
| STYLE DESIGNATOR | B3 STRAIGHT THRU |
| FLOW CONTROL DEVICE | POPPET |
| MEDIA FOR WHICH DESIGNED | WATER-OIL-GAS SINGLE RESPONSE |
| MAXIMUM OPERATING TEMP | 450.0 DEG FAHRENHEIT SINGLE RESPONSE |
| VALVE OPERATION METHOD | AUTOMATIC |
| CONNECTION TYPE | THREADED EXTERNAL TUBE 1ST END THREADED INTERNAL BOSS 2ND END |
| CONNECTION STYLE | G42 FLARED 1ST END G4 GASKET SEAL 2ND END |
| SEAT ANGLE | 37.0 DEGREES 1ST END |
| NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.750 INCHES 1ST END 0.750 INCHES 2ND END |
| THREAD SERIES DESIGNATOR | UN 1ST END UNJ 2ND END |
| NOMINAL THREAD SIZE | 1.500 INCHES 1ST END 1.062 INCHES 2ND END |
| THREAD QUANTITY PER INCH | 12 1ST END 12 2ND END |
| THREAD CLASS | 3A 1ST END 3B 2ND END |
| THREAD DIRECTION | RIGHT-HAND 1ST END RIGHT-HAND 2ND END |
| BONNET TYPE | INSIDE SCREW |
| BONNET ATTACHMENT METHOD | INTEGRAL |
| DISK LOADING METHOD | SPRING |
| OPENING PRESSURE SETTING | 30.0 POUNDS PER SQUARE INCH |
| FEATURES PROVIDED | PRESSURE TIGHT OUTLET SIDE |
Restrictions/Controls & Freight Information | NSN 4820-00-155-7681
| 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 | 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 4820-00-155-7681
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 | 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 | U | UNCLASSIFIED |
| Shelf Life Code | 0 | Nondeteriorative |
| Purchasing | QTY UOM |
1 EA : Each |