The Valve,safety Relief, cataloged under National Stock Number 4820-01-453-7618, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Pacific Powertech Llc. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-453-7618 |
| Primary Part Number | R5V12-615-12-A-1 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Pacific Powertech Llc |
| Status | ACTIVE |
| Connection Style | PLAIN,OPTIONAL END(PIPE) ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | SAFETY RELIEF |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 1.500 INCHES ALL ENDS IN |
| Material | IRON CAST BODY |
| Thread Series Designator | NPT ALL ENDS |
| Opening Pressure Setting | 5000.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| R5V12-615-12-A-1 PRIMARY | Pacific Powertech Llc (USA) |
NSN 4820-01-453-7618 is a Valve,safety Relief, manufactured by Pacific Powertech Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-453-7618 has 1 manufacturer part number on file: R5V12-615-12-A-1 (Pacific Powertech Llc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-528-9638. Verify interchangeability with system specifications before substitution.
Key specifications for R5V12-615-12-A-1: Connection Style: PLAIN,OPTIONAL END(PIPE) ALL ENDS; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Style Designator: SAFETY RELIEF; Thread Direction: RIGHT-HAND ALL ENDS. 9 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.