The Valve,safety Relief, cataloged under National Stock Number 4820-00-835-1252, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Huntington Ingalls Incorporated Div Ingalls Shipbuilding. Government technical data includes 13 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 | 4820-00-835-1252 |
| Primary Part Number | 513-023PCALP167 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Huntington Ingalls Incorporated Div Ingalls Shipbuilding |
| Status | ACTIVE |
| Material | COPPER ALLOY AND NICKEL ALLOY FLOW CONTROL DEVICE |
| Nominal Pipe Size Accommodated | 0.500 INCHES FIRST END IN |
| Connection Style | STREAMLINED WITH ONE BRAZING RING FIRST END |
| Adjustable Pressure Range | +401.0 TO 550.0 POUNDS PER SQUARE INCH LBS |
| Material | COPPER ALLOY STEM |
| Connection Type | UNTHREADED INTERNAL PIPE FIRST END |
| Style Designator | ANGLE |
| Material | COPPER ALLOY BODY |
| Disk Loading Method | SPRING |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY MFG SPEC TYPE A1,CLASS C |
| Flow Control Device | POPPET |
| Valve Operation Method | AUTOMATIC |
| Material | NICKEL ALLOY SEAT |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 513-023PCALP167 | Huntington Ingalls Incorporated Div Ingalls Shipbuilding (USA) |
| E8512D51M | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 9876-002PCALP167 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
NSN 4820-00-835-1252 is a Valve,safety Relief, manufactured by Huntington Ingalls Incorporated Div Ingalls Shipbuilding, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-835-1252 has 3 cross-referenced part numbers: 513-023PCALP167 (Huntington Ingalls Incorporated Div Ingalls Shipbuilding), E8512D51M (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 9876-002PCALP167 (Electric Boat Corporation Div General Dynamics Electric Boat).
There is 1 known substitute for 4820-00-835-1252: 4820-01-206-9733. Verify interchangeability with system specifications before substitution.
Key specifications for 513-023PCALP167: Material: COPPER ALLOY AND NICKEL ALLOY FLOW CONTROL DEVICE; Nominal Pipe Size Accommodated: 0.500 INCHES FIRST END IN; Connection Style: STREAMLINED WITH ONE BRAZING RING FIRST END; Adjustable Pressure Range: +401.0 TO 550.0 POUNDS PER SQUARE INCH LBS. 13 total characteristics are documented in the Federal Logistics Information System.