The Valve,safety Relief, cataloged under National Stock Number 4820-00-163-5175, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Naval Ship Systems Command. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-163-5175 |
| Primary Part Number | 3315562 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Naval Ship Systems Command |
| Status | ACTIVE |
| Bolt Hole Nominal Diameter | 0.875 INCHES SECOND END IN |
| Flange Face Design | RAISED STRAIGHT SECOND END |
| Opening Pressure Setting | 1375.0 POUNDS PER SQUARE INCH LBS |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY THE VALVE DISCHARGE FLOW RATE REQUIREMENT |
| Bolt Circle Nominal Diameter | 4.875 INCHES FIRST END IN |
| Bolt Circle Nominal Diameter | 5.875 INCHES SECOND END IN |
| Recess Nominal Diameter | 6.125 INCHES FIRST END IN |
| Bolt Hole Quantity | 8 SECOND END |
| Valve Size | 1.500 INCHES IN |
| Valve Operation Method | AUTOMATIC OR MANUAL |
| Bolt Hole Quantity | 4 FIRST END |
| Style Designator | ANGLE FLANGED ENDS |
| Raised Face Nominal Diameter | 4.125 INCHES SECOND END IN |
| Nominal Outside Diameter | 7.500 INCHES SECOND END IN |
| Flange Shape | ROUND WITH HOLES FIRST END |
| Recess Nominal Depth | 0.062 INCHES FIRST END IN |
| Bolt Hole Nominal Diameter | 1.125 INCHES FIRST END IN |
| Bonnet Type | EXPOSED SPRING |
| Renewable Seat Ring Type | THREADED |
| Raised Face Nominal Height | 0.062 INCHES SECOND END IN |
| Features Provided | PRESSURE TIGHT OUTLET SIDE |
| Flange Face Design | RECESSED STRAIGHT FIRST END |
| Flange Shape | ROUND WITH HOLES SECOND END |
| Nominal Outside Diameter | 7.000 INCHES FIRST END IN |
| Valve Discharge Flow Rate | 17200.0 POUNDS PER HOUR LBS |
| Flow Control Device | DISK |
| Disk Loading Method | SPRING |
| Bonnet Attachment Method | BOLTED |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-00-163-5175 is a Valve,safety Relief, manufactured by Naval Ship Systems Command, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-163-5175 has 2 cross-referenced part numbers: 3315562 (Naval Ship Systems Command), A39344 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
There are 12 known substitutes for 4820-00-163-5175: 4820-00-163-5163, 4820-00-163-5164, 4820-00-163-5171 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 3315562: Bolt Hole Nominal Diameter: 0.875 INCHES SECOND END IN; Flange Face Design: RAISED STRAIGHT SECOND END; Opening Pressure Setting: 1375.0 POUNDS PER SQUARE INCH LBS; Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY THE VALVE DISCHARGE FLOW RATE REQUIREMENT. 28 total characteristics are documented in the Federal Logistics Information System.