NSN 4820-00-875-1574 8171A, 00-875-1574, 008751574
Product Details | SAFETY RELIEF VALVE
4820-00-875-1574 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: 8171A, 4820-00-875-1574, 00-875-1574, 4820008751574, 008751574
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 48 | 01 JAN 1962 | 00-875-1574 | 05488 ( VALVE, SAFETY RELIEF ) |
Drawings & Photos | NSN 4820-00-875-1574
Cross Reference | NSN 4820-00-875-1574
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 8171A | 72352 | CURTISS-WRIGHT FLOW CONTROL CORPORATION |
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Related Products | NSN 4820-00-875-1574
Technical Data | NSN 4820-00-875-1574
| Characteristic | Specifications |
|---|---|
| MATERIAL | STEEL BODY STEEL COMP 303 FLOW CONTROL DEVICE STEEL COMP 416 PACKING STEEL COMP 416 STEM |
| STYLE DESIGNATOR | C1A ANGLE FLANGED ENDS |
| FIRST CONNECTION FACE TO CENTERLINE DISTANCE | 9.187 INCHES |
| SECOND CONNECTION FACE TO CENTERLINE DISTANCE | 10.000 INCHES |
| VALVE SIZE | 8.000 INCHES |
| FLOW CONTROL DEVICE | DISK |
| MAXIMUM OPERATING PRESSURE | 50.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| MAXIMUM OPERATING TEMP | 650.0 DEG FAHRENHEIT SINGLE RESPONSE |
| VALVE OPERATION METHOD | AUTOMATIC |
| CONNECTION TYPE | FLANGE 1ST END FLANGE 2ND END |
| FLANGE SHAPE | ROUND WITH HOLES 1ST END ROUND WITH HOLES 2ND END |
| NOMINAL OUTSIDE DIAMETER | 12.750 INCHES 1ST END 12.500 INCHES 2ND END |
| NOMINAL THICKNESS | 0.812 INCHES 1ST END 1.437 INCHES 2ND END |
| BOLT HOLE QUANTITY | 14 1ST END 12 2ND END |
| BOLT HOLE NOMINAL DIAMETER | 0.687 INCHES 1ST END 0.875 INCHES 2ND END |
| BOLT CIRCLE NOMINAL DIAMETER | 11.062 INCHES 1ST END 10.625 INCHES 2ND END |
| FLANGE FACE DESIGN | PLAIN 1ST END |
| BONNET TYPE | INSIDE SPRING |
| BONNET ATTACHMENT METHOD | BOLTED |
| DISK LOADING METHOD | SPRING |
| MOUNTING FACILITY | BRACKET |
| MANUFACTURERS CODE | 72352 |
| DESIGN CONTROL REFERENCE | 8171A |
Restrictions/Controls & Freight Information | NSN 4820-00-875-1574
| 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. |
| Automatic Data Processing Equipment: | 0 | Represents items with no ADP components. NOTE: Codes 1 through 6 are only to be used when the item is Automatic Data Processing Equipment (ADPE) in its entirety and is limited to the type meeting only one of the definitions for codes 1 through 6. (See code 9) |
| Category | Code | Description |
|---|---|---|
| NMF Description | 127220 | PRESSURE REG/RED/RELIEF VALVES NOI |
| Less than car load rating | P | 77.5 |
| 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 | 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 4820-00-875-1574
Navy| Category | Code | Description |
|---|---|---|
| Cognizance Codes | 3B | Navy-owned stocks of field level repairable 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 |
| Reparability | D | Field Level Reparables |
| 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 |