The Valve,safety Relief, cataloged under National Stock Number 4820-01-128-2257, 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 23 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-128-2257 |
| Primary Part Number | E8530E41B |
| 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 |
| Adjustable Pressure Range | +25.0 TO 29.0 POUNDS PER SQUARE INCH LBS |
| Connection Style | SOCKET WITH BRAZING RING (TUBE) ALL ENDS |
| Media for Which Designed | AIR FIRST RESPONSE |
| Bonnet Attachment Method | BOLTED |
| Material | COPPER ALLOY SEAT |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Material | COPPER ALLOY BODY |
| Material | COPPER ALLOY STEM |
| Material Document and Classification | QQ-C-390,ALLOY DR/D/ FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Maximum Operating Temp | 150.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material Document and Classification | QQ-C-390,ALLOY D4/D/ FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| Operating Pressure | 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material Document and Classification | QQ-B-637 FED SPEC SINGLE MATERIAL RESPONSE STEM |
| Nominal Outside Diameter Tube Accommodated | 1.500 INCHES ALL ENDS IN |
| Valve Operation Method | AUTOMATIC |
| Style Designator | ANGLE |
| Media for Which Designed | WATER, SALT SECOND RESPONSE |
| Connection Type | UNTHREADED INTERNAL TUBE ALL ENDS |
| Material Document and Classification | QQ-C-390,ALLOY D4/D/ FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Flow Control Device | DISK |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING |
| Bonnet Type | INSIDE SPRING |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| E8530E41B PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| E8530E41B | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 8530 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 3,305,277 | Naval Ship Systems Command (USA) |
NSN 4820-01-128-2257 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 4820-01-128-2257 has 4 cross-referenced part numbers: E8530E41B (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), E8530E41B (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 8530 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 3,305,277 (Naval Ship Systems Command).
There are 11 known substitutes for 4820-01-128-2257: 4720-00-203-2526, 3030-00-264-3073, 3030-00-777-9547 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for E8530E41B: Disk Loading Method: SPRING; Adjustable Pressure Range: +25.0 TO 29.0 POUNDS PER SQUARE INCH LBS; Connection Style: SOCKET WITH BRAZING RING (TUBE) ALL ENDS; Media for Which Designed: AIR FIRST RESPONSE. 23 total characteristics are documented in the Federal Logistics Information System.