The Valve,safety Relief, cataloged under National Stock Number 4820-01-156-0520, 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 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 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 | 4820-01-156-0520 |
| Primary Part Number | 3045-385 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Superior Valve Co |
| Status | ACTIVE |
| Material | COPPER ALLOY BODY |
| Flow Control Device | POPPET |
| Thread Series Designator | NPT ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE SECOND END |
| Opening Pressure Setting | 385.0 POUNDS PER SQUARE INCH LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Disk Loading Method | SPRING |
| Connection Style | PLAIN,OPTIONAL END(PIPE) SECOND END |
| Valve Operation Method | AUTOMATIC |
| Style Designator | STRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF SEPARABLE SECTIONS. |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Connection Style | PLAIN (PIPE) FIRST END |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-156-0520 is a Valve,safety Relief, manufactured by Superior Valve Co, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-156-0520 has 2 cross-referenced part numbers: 524260 (Lodestone Corp Div of Fedders Corp), 3045-385 (Superior Valve Co).
There is 1 known substitute for 4820-01-156-0520: 6105-00-325-9356. Verify interchangeability with system specifications before substitution.
Key specifications for 3045-385: Material: COPPER ALLOY BODY; Flow Control Device: POPPET; Thread Series Designator: NPT ALL ENDS; Connection Type: THREADED INTERNAL PIPE SECOND END. 13 total characteristics are documented in the Federal Logistics Information System.