NSN 4820-01-147-4951 GV500HW4A1237, GV500HW4A12-37, GV500HW4A1277
Product Details | SAFETY RELIEF VALVE
4820-01-147-4951 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: GV500HW4A1237, GV500HW4A12-37, GV500HW4A1277, GV500HW4A12-77, 537A4D12, 537A-4D-12, 577A4D12, 577A-4D-12, 4820-01-147-4951, 01-147-4951, 4820011474951, 011474951
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 48 | 17 FEB 1983 | 01-147-4951 | 05488 ( VALVE, SAFETY RELIEF ) |
Drawings & Photos | NSN 4820-01-147-4951
Demand History | NSN 4820-01-147-4951
| Part Number | Request Date | QTY | Origin |
|---|---|---|---|
| 4820-01-147-4951 | 2014-01-30 | 16 | DIBBS |
Cross Reference | NSN 4820-01-147-4951
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 537A-4D-12 | 91816 | CIRCOR AEROSPACE, INC. DBA CIRCLE SEAL CONTROLS |
| 577A-4D-12 | 91816 | CIRCOR AEROSPACE, INC. DBA CIRCLE SEAL CONTROLS |
| GV500HW4A12-37 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION DIV NORTHROP GRUMMAN AEROSPACE |
| GV500HW4A12-77 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION DIV NORTHROP GRUMMAN AEROSPACE |
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Technical Data | NSN 4820-01-147-4951
| Characteristic | Specifications |
|---|---|
| MATERIAL | ALUMINUM ALLOY 2024 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | ANODIZE |
| STYLE DESIGNATOR | C4 STRAIGHT THRU |
| FLOW CONTROL DEVICE | POPPET |
| MEDIA FOR WHICH DESIGNED | GAS, INERT 1ST RESPONSE FUEL/OIL, HYDROCARBON 2ND RESPONSE AMMONIA, GASEOUS 3RD RESPONSE HYDROGEN 4TH RESPONSE |
| MAXIMUM OPERATING PRESSURE | 200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| MAXIMUM OPERATING TEMP | 250.0 DEG FAHRENHEIT SINGLE RESPONSE |
| VALVE OPERATION METHOD | AUTOMATIC |
| CONNECTION TYPE | THREADED EXTERNAL TUBE 1ST END |
| CONNECTION STYLE | G49A GASKET SEAL 1ST END |
| THREAD SERIES DESIGNATOR | UNF 1ST END |
| NOMINAL THREAD SIZE | 0.438 INCHES 1ST END |
| THREAD CLASS | 3A 1ST END |
| THREAD DIRECTION | RIGHT-HAND 1ST END |
| DISK LOADING METHOD | SPRING |
| OPENING PRESSURE SETTING | 12.0 POUNDS PER SQUARE INCH |
Restrictions/Controls & Freight Information | NSN 4820-01-147-4951
| 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: | 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 |
|---|---|---|
| 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 | 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 4820-01-147-4951
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 | Z | INSURANCE/NUMERIC STOCKAGE OBJECTIVE ITEM # Items which may be required occasionally or intermittently, and prudence requires that a nominal quantity of materiel be stocked due to the essentiality or the lead time of the item. 1. The item is centrally managed, stocked, and issued. 2. Requisitions will be submitted in accordance with IMM/Service requisitioning procedures. |
| Controlled Item Code | U | UNCLASSIFIED |
| Shelf Life Code | 0 | Nondeteriorative |
| Purchasing | QTY UOM |
1 EA : Each |