The Valve,safety Relief, cataloged under National Stock Number 4820-01-185-2291, 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 4 commercial cross-references from 3 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 | 4820-01-185-2291 |
| Primary Part Number | E8540D51M |
| 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 |
| Bonnet Type | EXPOSED SPRING |
| Operating Pressure | 3400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | STEEL COMP 316 STEM |
| Connection Style | SOCKET WITH BRAZING RING ALL ENDS |
| Material | COPPER ALLOY BODY |
| Nominal Pipe Size Accommodated | 1.000 INCHES ALL ENDS IN |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Disk Loading Method | SPRING |
| Bonnet Attachment Method | BOLTED |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Flow Control Device | DISK |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Adjustable Pressure Range | +1201.0 TO 1500.0 POUNDS PER SQUARE INCH LBS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 8540 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 3,326,955 | Naval Ship Systems Command (USA) |
| E8540D51M PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| E8540D51M | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
NSN 4820-01-185-2291 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 4820-01-185-2291 has 4 cross-referenced part numbers: 8540 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 3,326,955 (Naval Ship Systems Command), E8540D51M (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), E8540D51M (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
There are 12 known substitutes for 4820-01-185-2291: 4940-00-006-0965, 5365-00-133-3662, 5950-00-229-9797 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for E8540D51M: Bonnet Type: EXPOSED SPRING; Operating Pressure: 3400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Material: STEEL COMP 316 STEM; Connection Style: SOCKET WITH BRAZING RING ALL ENDS. 16 total characteristics are documented in the Federal Logistics Information System.