The Valve,safety Relief, cataloged under National Stock Number 4820-00-163-1259, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-163-1259 |
| Primary Part Number | A49148 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| Status | ACTIVE |
| Disk Loading Method | SPRING |
| Nominal Outside Diameter | 9.000 INCHES SECOND END IN |
| Bolt Hole Quantity | 8 FIRST END |
| Bolt Hole Nominal Diameter | 0.875 INCHES SECOND END IN |
| Style Designator | ANGLE FLANGED ENDS |
| Flange Face Design | RAISED STRAIGHT SECOND END |
| Recess Nominal Diameter | 6.875 INCHES FIRST END IN |
| Valve Size | 2.500 INCHES IN |
| Recess Nominal Depth | 0.062 INCHES FIRST END IN |
| Nominal Thickness | 1.188 INCHES FIRST END IN |
| Flange Shape | ROUND WITH HOLES FIRST END |
| Raised Face Nominal Diameter | 5.500 INCHES SECOND END IN |
| Bolt Hole Quantity | 8 SECOND END |
| Bolt Hole Nominal Diameter | 0.875 INCHES FIRST END IN |
| Valve Operation Method | AUTOMATIC OR MANUAL |
| Flange Shape | ROUND WITH HOLES SECOND END |
| Bonnet Attachment Method | BOLTED |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY THE VALVE DISCHARGE FLOW RATE REQUIREMENT |
| Opening Pressure Setting | 720.0 POUNDS PER SQUARE INCH LBS |
| Bonnet Type | EXPOSED SPRING |
| Nominal Thickness | 1.125 INCHES SECOND END IN |
| Nominal Outside Diameter | 7.500 INCHES FIRST END IN |
| Flange Face Design | RECESSED STRAIGHT FIRST END |
| Features Provided | PRESSURE TIGHT OUTLET SIDE |
| Valve Discharge Flow Rate | 31585.0 POUNDS PER HOUR LBS |
| Bolt Circle Nominal Diameter | 7.250 INCHES SECOND END IN |
| Raised Face Nominal Height | 0.062 INCHES SECOND END IN |
| Bolt Circle Nominal Diameter | 5.875 INCHES FIRST END IN |
| Renewable Seat Ring Type | THREADED |
| Flow Control Device | DISK |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| A49148 | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
NSN 4820-00-163-1259 is a Valve,safety Relief, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-163-1259 has 1 cross-referenced part number: A49148 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
There are 10 known substitutes for 4820-00-163-1259: 4820-00-060-8193, 4820-00-410-6001, 4820-01-019-2821 and 7 more. Verify interchangeability with system specifications before substitution.
Key specifications for A49148: Disk Loading Method: SPRING; Nominal Outside Diameter: 9.000 INCHES SECOND END IN; Bolt Hole Quantity: 8 FIRST END; Bolt Hole Nominal Diameter: 0.875 INCHES SECOND END IN. 30 total characteristics are documented in the Federal Logistics Information System.