The Valve,safety Relief, cataloged under National Stock Number 4820-00-844-6849, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Anderson Greenwood Lp Dba Anderson Greenwood Crosby. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-844-6849 |
| Primary Part Number | 48A1-4IN75PSI |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| Status | CANCELLED |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | NPT FIRST END |
| Flow Control Device | DISK |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Operating Pressure | 225.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Features Provided | BONNET PACKING |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Disk Loading Method | SPRING |
| Valve Operation Method | AUTOMATIC OR MANUAL |
| Style Designator | ANGLE |
| Maximum Operating Temp | 300.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Bonnet Attachment Method | INTEGRAL |
| Nominal Thread Size | 0.250 INCHES FIRST END IN |
| Connection Style | PLAIN (PIPE) FIRST END |
| Thread Direction | RIGHT-HAND FIRST END |
| Opening Pressure Setting | 75.0 POUNDS PER SQUARE INCH LBS |
| Valve Discharge Flow Rate | 45.0 CUBIC FEET PER MINUTE |
| Bonnet Type | INSIDE SPRING |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 48 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 48A1-4IN75PSI PRIMARY | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 48A | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
NSN 4820-00-844-6849 is a Valve,safety Relief, manufactured by Anderson Greenwood Lp Dba Anderson Greenwood Crosby, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-844-6849 has 3 cross-referenced part numbers: 48 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 48A1-4IN75PSI (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 48A (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
There are 12 known substitutes for 4820-00-844-6849: 4820-00-005-7394, 4820-00-027-0994, 4940-00-181-7590 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 48A1-4IN75PSI: Material: COPPER ALLOY OVERALL; Thread Series Designator: NPT FIRST END; Flow Control Device: DISK; Media for Which Designed: AIR SINGLE RESPONSE. 18 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-844-6849 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.