The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-555-3445, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Chemetron Fire Systems. Government technical data includes 4 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-555-3445 |
| Primary Part Number | 80610330 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Chemetron Fire Systems |
| Status | ACTIVE |
| Body Style | SINGLE CONNECTION ANGLE FLOW |
| Supplementary Features | THE NITROGEN RELIEF VALVE IS INSTALLED ON THE TOP OF THE WATER TANK IN THE VAPOR SPACE. THE AMSE CODED VALVE IS DESIGNED TO BE FULLY OPENED AT 550 PSIG. THE BODY IS CARBON STEEL, PAINTED RED , AND THE INTERNAL COMPONENTS ARE STAINLESS STEEL. THE VALVE OUTLET IS 1" NPT. |
| Opening Pressure Setting | ERR-060 |
| Material | STEEL BODY |
| 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 |
|---|---|
| 80610330 PRIMARY | Chemetron Fire Systems (USA) |
NSN 4820-01-555-3445 is a Valve,relief,pressure and Temper, manufactured by Chemetron Fire Systems, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-555-3445 has 1 manufacturer part number on file: 80610330 (Chemetron Fire Systems).
Key specifications for 80610330: Body Style: SINGLE CONNECTION ANGLE FLOW; Supplementary Features: THE NITROGEN RELIEF VALVE IS INSTALLED ON THE TOP OF THE WATER TANK IN THE VAPOR SPACE. THE AMSE CODED VALVE IS DESIGNED TO BE FULLY OPENED AT 550 PSIG. THE BODY IS CARBON STEEL, PAINTED RED , AND THE INTERNAL COMPONENTS ARE STAINLESS STEEL. THE VALVE OUTLET IS 1" NPT.; Opening Pressure Setting: ERR-060; Part Name Assigned by Controlling Agency: RELIEF VALVE. 4 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.