The Valve,safety Relief, cataloged under National Stock Number 4820-00-289-1857, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Derbyshire Machine & Tool Co. Government technical data includes 15 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-289-1857 |
| Primary Part Number | 71S102 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Derbyshire Machine & Tool Co |
| Status | CANCELLED |
| Connection Type | UNTHREADED INTERNAL PIPE FIRST END |
| Connection Style | SOCKET FIRST END |
| Operating Pressure | 100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Adjustable Pressure Range | +30.0 TO 75.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | MANUAL |
| Maximum Operating Temp | 125.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Features Provided | PRESSURE TIGHT OUTLET SIDE |
| Material | NICKEL ALLOY SEAT |
| Nominal Pipe Size Accommodated | 1.000 INCHES FIRST END IN |
| Disk Loading Method | SPRING |
| Flow Control Device | DISK |
| Material | COPPER ALLOY STEM |
| Material | COPPER ALLOY BODY |
| Media for Which Designed | WATER, FRESH SINGLE RESPONSE |
| Style Designator | ANGLE |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 71S102 PRIMARY | Derbyshire Machine & Tool Co (USA) |
| E523 | Kieley and Mueller Inc Sub of Johnson Controls Inc (USA) |
| E405ALT2 | Kieley and Mueller Inc Sub of Johnson Controls Inc (USA) |
| 402042ALT1 | Naval Ship Systems Command (USA) |
NSN 4820-00-289-1857 is a Valve,safety Relief, manufactured by Derbyshire Machine & Tool Co, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-289-1857 has 4 cross-referenced part numbers: 71S102 (Derbyshire Machine & Tool Co), E523 (Kieley and Mueller Inc Sub of Johnson Controls Inc), E405ALT2 (Kieley and Mueller Inc Sub of Johnson Controls Inc), 402042ALT1 (Naval Ship Systems Command).
There is 1 known substitute for 4820-00-289-1857: 5360-00-386-3307. Verify interchangeability with system specifications before substitution.
Key specifications for 71S102: Connection Type: UNTHREADED INTERNAL PIPE FIRST END; Connection Style: SOCKET FIRST END; Operating Pressure: 100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Adjustable Pressure Range: +30.0 TO 75.0 POUNDS PER SQUARE INCH LBS. 16 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-289-1857 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.