The Valve,safety Relief, cataloged under National Stock Number 4820-01-376-2990, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Superior Valve Co. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-376-2990 |
| Primary Part Number | 3220-300 SET 300 PSI |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Superior Valve Co |
| Status | ACTIVE |
| Nominal Thread Size | 0.875 INCHES SECOND END IN |
| Connection Style | PLAIN (PIPE) FIRST END |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Valve Operation Method | AUTOMATIC |
| Thread Quantity Per Inch | 14 SECOND END |
| Thread Series Designator | NPT FIRST END |
| Connection Style | FLARED (TUBE) SECOND END |
| Operating Pressure | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Style Designator | ANGLE |
| Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) SECOND END |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE FLOW CONTROL DEVICE |
| Opening Pressure Setting | 300.0 POUNDS PER SQUARE INCH LBS |
| Seat Angle | 37.0 DEGREES SECOND END |
| Media for Which Designed | REFRIGERANT 22 SINGLE RESPONSE |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Flow Control Device | DISK |
| Maximum Operating Temp | 300.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | COPPER ALLOY BODY |
| Thread Class | 3A SECOND END A |
| Nominal Thread Size | 0.500 INCHES FIRST END IN |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 3220-300 SET 300 PSI PRIMARY | Superior Valve Co (USA) |
| 90SM-125-0001ITEM 184 | Carrier Corp (USA) |
| 90SM-125-0001 | Carrier Corp (USA) |
| 3220-300 SET 30 | Superior Valve Co (USA) |
NSN 4820-01-376-2990 is a Valve,safety Relief, manufactured by Superior Valve Co, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-376-2990 has 4 cross-referenced part numbers: 3220-300 SET 300 PSI (Superior Valve Co), 90SM-125-0001ITEM 184 (Carrier Corp), 90SM-125-0001 (Carrier Corp), 3220-300 SET 30 (Superior Valve Co).
There are 4 known substitutes for 4820-01-376-2990: 4820-01-371-8806, 4130-01-372-1493, 4120-01-372-1637 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 3220-300 SET 300 PSI: Nominal Thread Size: 0.875 INCHES SECOND END IN; Connection Style: PLAIN (PIPE) FIRST END; Connection Type: THREADED EXTERNAL TUBE SECOND END; Valve Operation Method: AUTOMATIC. 21 total characteristics are documented in the Federal Logistics Information System.