The Valve,safety Relief, cataloged under National Stock Number 4820-00-203-2589, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Anderson Greenwood Lp Dba Anderson Greenwood Crosby. 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-203-2589 |
| Primary Part Number | 2251 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| Status | ACTIVE |
| Adjustable Pressure Range | +101.0 TO 149.0 POUNDS PER SQUARE INCH LBS |
| Features Provided | VALVE STEM LOCK SHIELD |
| Flange Face Design | PLAIN ALL ENDS |
| Material | STEEL CORROSION RESISTING STEM |
| Flow Control Device | DISK |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Valve Operation Method | MANUAL OR AUTOMATIC |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | STEEL CORROSION RESISTING STEM |
| Maximum Operating Temp | 650.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Media for Which Designed | STEAM SINGLE RESPONSE |
| Flange Face Design | PLAIN ALL ENDS |
| Nominal Outside Diameter | 4.250 INCHES ALL ENDS IN |
| Bolt Hole Nominal Diameter | 0.562 INCHES ALL ENDS IN |
| Bolt Circle Nominal Diameter | 3.125 INCHES ALL ENDS IN |
| Nominal Thickness | 0.438 INCHES ALL ENDS IN |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | STEEL CORROSION RESISTING SEAT |
| Style Designator | ANGLE |
| Adjustable Pressure Range | +101.0 TO 149.0 POUNDS PER SQUARE INCH LBS |
| Media for Which Designed | STEAM SINGLE RESPONSE |
| Bolt Hole Quantity | 4 ALL ENDS |
| Material | STEEL BODY |
| Nominal Thickness | 0.438 INCHES ALL ENDS IN |
| Bolt Hole Nominal Diameter | 0.562 INCHES ALL ENDS IN |
| Bonnet Type | INSIDE SPRING |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Features Provided | VALVE STEM LOCK SHIELD |
| Connection Type | FLANGE ALL ENDS |
| Nominal Outside Diameter | 4.250 INCHES ALL ENDS IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 2251 PRIMARY | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
NSN 4820-00-203-2589 is a Valve,safety Relief, manufactured by Anderson Greenwood Lp Dba Anderson Greenwood Crosby, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-203-2589 has 1 cross-referenced part number: 2251 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
There are 12 known substitutes for 4820-00-203-2589: 5330-00-106-5553, 6230-00-164-6605, 5331-00-165-1966 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 2251: Adjustable Pressure Range: +101.0 TO 149.0 POUNDS PER SQUARE INCH LBS; Features Provided: VALVE STEM LOCK SHIELD; Flange Face Design: PLAIN ALL ENDS; Material: STEEL CORROSION RESISTING STEM. 30 total characteristics are documented in the Federal Logistics Information System.