The Valve,safety Relief, cataloged under National Stock Number 4820-01-022-8593, 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 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 17 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-022-8593 |
| Primary Part Number | 20249-4-817-2500 |
| 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 |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Thread Series Designator | UN ALL ENDS |
| Connection Type | THREADED INTERNAL BOSS ALL ENDS |
| Adjustable Pressure Range | +2000.0 TO 3000.0 POUNDS PER SQUARE INCH LBS |
| Material Document and Classification | ASTM B164-61,CLASS A ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Connection Style | GASKET SEAL(BOSS) ALL ENDS |
| Flow Control Device | DISK |
| Nominal Thread Size | 1.062 INCHES ALL ENDS IN |
| Style Designator | ANGLE |
| Thread Quantity Per Inch | 12 ALL ENDS |
| Thread Class | 2B ALL ENDS |
| Disk Loading Method | SPRING |
| Material | NICKEL ALLOY 400 OVERALL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| D45MS-01 3/4 | Danco Valve Company (USA) |
| 817-3-4IN2000T3 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 4820PL1242700 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
| 20249-4-817-2500 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 20249-4-817-2500 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 20249 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 20249-4-87 | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| W112181 | Dresser-Rand Co Ingersoll-Rand Opns a Joint Venture (USA) |
| W112181 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 20249 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| W112181 | Siemens Energy, Inc. Dba Dresser-Rand (USA) |
| 20249-4-817 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| D45MS-01-3/4-3/4 PRIMARY | Dante Valve Company (USA) |
| W112181 PRIMARY | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA) |
| 817-3-4IN2000T3000PSI | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 817-3-4IN2000T3000PSI PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 20249-4-87 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
NSN 4820-01-022-8593 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 4820-01-022-8593 has 17 cross-referenced part numbers: D45MS-01 3/4 (Danco Valve Company), 817-3-4IN2000T3 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 4820PL1242700 (Jednolity Indeks Materialowy - Uniform Material Index), 20249-4-817-2500 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 20249-4-817-2500 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team) and 12 more.
There are 7 known substitutes for 4820-01-022-8593: 5999-00-035-8725, 5950-00-730-4075, 5905-00-813-0240 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for 20249-4-817-2500: Thread Direction: RIGHT-HAND ALL ENDS; Valve Operation Method: AUTOMATIC; Thread Series Designator: UN ALL ENDS; Connection Type: THREADED INTERNAL BOSS ALL ENDS. 15 total characteristics are documented in the Federal Logistics Information System.