The Valve,safety Relief, cataloged under National Stock Number 4820-00-477-5645, 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 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-477-5645 |
| Primary Part Number | 48A-1/4-320 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| Status | ACTIVE |
| Connection Style | PLAIN (PIPE) FIRST END |
| Nominal Pipe Size Accommodated | 0.250 INCHES FIRST END IN |
| Valve Operation Method | MANUAL |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | NPT FIRST END |
| Flow Control Device | DISK |
| Operating Pressure | 320.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Style Designator | ANGLE |
| Opening Pressure Setting | 320.0 POUNDS PER SQUARE INCH LBS |
| Nominal Thread Size | 0.250 INCHES FIRST END IN |
| Thread Direction | RIGHT-HAND FIRST END |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Thread Quantity Per Inch | 18 FIRST END |
| Disk Loading Method | SPRING |
| Maximum Operating Temp | 60.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 48A-1/4-320 PRIMARY | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 48-320 PRIMARY | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
NSN 4820-00-477-5645 is a Valve,safety Relief, manufactured by Anderson Greenwood Lp Dba Anderson Greenwood Crosby, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-477-5645 has 2 cross-referenced part numbers: 48A-1/4-320 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 48-320 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
There are 3 known substitutes for 4820-00-477-5645: 3110-00-101-1796, 5120-00-112-9462, 4820-00-757-2754. Verify interchangeability with system specifications before substitution.
Key specifications for 48A-1/4-320: Connection Style: PLAIN (PIPE) FIRST END; Nominal Pipe Size Accommodated: 0.250 INCHES FIRST END IN; Valve Operation Method: MANUAL; Media for Which Designed: AIR SINGLE RESPONSE. 17 total characteristics are documented in the Federal Logistics Information System.