The Valve,safety Relief, cataloged under National Stock Number 4820-01-442-7779, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, 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 | 4820-01-442-7779 |
| Primary Part Number | 20391-01-E-3150 |
| 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 |
| Valve Operation Method | AUTOMATIC |
| Material | NICKEL ALLOY STEM |
| Connection Style | SOCKET WITH BRAZING RING ALL ENDS |
| Material | NICKEL ALLOY BODY |
| Maximum Operating Temp | 150.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Flow Control Device | DISK |
| Operating Pressure | 3450.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material Document and Classification | ASTM B164 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Opening Pressure Setting | 3150.0 POUNDS PER SQUARE INCH LBS |
| Style Designator | ANGLE |
| Material Document and Classification | ASTM B164 ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Disk Loading Method | SPRING |
| Material Document and Classification | ASTM A494 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Nominal Pipe Size Accommodated | 0.250 INCHES ALL ENDS IN |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Material | NICKEL ALLOY SEAT |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Material Document and Classification | ASTM B164 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 20391-01-E-3150 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 20391 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 20391-01-E-3150 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
NSN 4820-01-442-7779 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 4820-01-442-7779 has 3 cross-referenced part numbers: 20391-01-E-3150 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 20391 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 20391-01-E-3150 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
There are 10 known substitutes for 4820-01-442-7779: 2930-00-005-5077, 5835-00-059-5854, 1680-00-082-3376 and 7 more. Verify interchangeability with system specifications before substitution.
Key specifications for 20391-01-E-3150: Valve Operation Method: AUTOMATIC; Material: NICKEL ALLOY STEM; Connection Style: SOCKET WITH BRAZING RING ALL ENDS; Material: NICKEL ALLOY BODY. 19 total characteristics are documented in the Federal Logistics Information System.