The Valve,safety Relief, cataloged under National Stock Number 4820-01-187-1103, 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 21 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-187-1103 |
| Primary Part Number | 20219NS41M |
| 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 |
| Material | NICKEL ALLOY SEAT |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Flange Face Design | RECESSED STRAIGHT SECOND END |
| Material | NICKEL ALLOY STEM |
| Style Designator | ANGLE FLANGED ENDS |
| Valve Size | 2.000 INCHES IN |
| Material Document and Classification | QQ-N-288 FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | ASTM B164 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Bonnet Type | INSIDE SPRING |
| Valve Operation Method | AUTOMATIC |
| Second Connection Face to Centerline Distance | 4.750 INCHES IN |
| Flange Face Design | PLAIN FIRST END |
| Flow Control Device | DISK |
| Connection Type | FLANGE ALL ENDS |
| Bonnet Attachment Method | BOLTED |
| Adjustable Pressure Range | +106.0 TO 120.0 POUNDS PER SQUARE INCH LBS |
| First Connection Face to Centerline Distance | 4.750 INCHES IN |
| Maximum Operating Temp | 150.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | COPPER ALLOY BODY |
| Material Document and Classification | ASTM B-61 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 20219 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 20219NS41M PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 20219NS41M | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
NSN 4820-01-187-1103 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 4820-01-187-1103 has 3 cross-referenced part numbers: 20219 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 20219NS41M (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 20219NS41M (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
There are 12 known substitutes for 4820-01-187-1103: 5315-00-017-6150, 3110-00-156-7442, 5910-00-667-5249 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 20219NS41M: Disk Loading Method: SPRING; Material: NICKEL ALLOY SEAT; Operating Pressure: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Flange Face Design: RECESSED STRAIGHT SECOND END. 21 total characteristics are documented in the Federal Logistics Information System.