The Valve,safety Relief, cataloged under National Stock Number 4820-00-421-9406, 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 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-421-9406 |
| Primary Part Number | 2A1-2MNPT100 |
| 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) SECOND ENDPLAIN (PIPE) SECOND END |
| Bonnet Type | INSIDE SPRINGINSIDE SPRING |
| Media for Which Designed | GAS, NATURAL SECOND RESPONSE |
| Thread Series Designator | NPT SECOND ENDNPT FIRST END |
| Nominal Thread Size | 0.750 INCHES FIRST END0.750 INCHES FIRST END IN |
| Features Provided | VALVE STEM LOCK SHIELDVALVE STEM LOCK SHIELD |
| Style Designator | ANGLE |
| Bonnet Attachment Method | THREADEDTHREADED |
| Connection Type | THREADED INTERNAL PIPE FIRST ENDTHREADED INTERNAL PIPE FIRST END |
| Thread Series Designator | NPT SECOND END |
| Connection Type | THREADED EXTERNAL PIPE SECOND ENDTHREADED EXTERNAL PIPE SECOND END |
| Flow Control Device | DISKDISK |
| Thread Direction | RIGHT-HAND SECOND ENDRIGHT-HAND SECOND END |
| Connection Style | PLAIN,OPTIONAL END(PIPE) FIRST ENDPLAIN,OPTIONAL END(PIPE) FIRST END |
| Thread Quantity Per Inch | 14 SECOND END14 SECOND END |
| Valve Discharge Flow Rate | 160.0 CUBIC FEET PER MINUTE160.0 CUBIC FEET PER MINUTE |
| Thread Quantity Per Inch | 14 FIRST END14 FIRST END |
| Material | COPPER ALLOY FLOW CONTROL DEVICECOPPER ALLOY SEAT |
| Thread Direction | RIGHT-HAND FIRST ENDRIGHT-HAND FIRST END |
| Operating Pressure | 165.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Pipe Size Accommodated | 0.500 INCHES SECOND END0.500 INCHES SECOND END IN |
| Opening Pressure Setting | 100.0 POUNDS PER SQUARE INCH LBS |
| Nominal Thread Size | 0.500 INCHES SECOND END0.500 INCHES SECOND END IN |
| Valve Operation Method | AUTOMATICAUTOMATIC |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Disk Loading Method | SPRINGSPRING |
| Nominal Pipe Size Accommodated | 0.750 INCHES FIRST END0.750 INCHES FIRST END IN |
| Media for Which Designed | GAS, NATURAL SECOND RESPONSEAIR FIRST RESPONSE |
| Material | COPPER ALLOY SEATCOPPER ALLOY BODY |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| A23083 | Superior Air Products Co (USA) |
| 26-1/2IN-100PSI | Aquatrol Inc (USA) |
| 2A1-2MNPT100 PRIMARY | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
NSN 4820-00-421-9406 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 4820-00-421-9406 has 3 cross-referenced part numbers: A23083 (Superior Air Products Co), 26-1/2IN-100PSI (Aquatrol Inc), 2A1-2MNPT100 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
There is 1 known substitute for 4820-00-421-9406: 3120-00-585-4522. Verify interchangeability with system specifications before substitution.
Key specifications for 2A1-2MNPT100: Connection Style: PLAIN (PIPE) SECOND ENDPLAIN (PIPE) SECOND END; Bonnet Type: INSIDE SPRINGINSIDE SPRING; Media for Which Designed: GAS, NATURAL SECOND RESPONSE; Thread Series Designator: NPT SECOND ENDNPT FIRST END. 29 total characteristics are documented in the Federal Logistics Information System.