The Head and Disk,safety,pressure Re, cataloged under National Stock Number 4820-01-108-7828, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Triumph Thermal Systems - Maryland, Inc.. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-108-7828 |
| Primary Part Number | 77737135-3 |
| Item Name | Head and Disk,safety,pressure Re |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Triumph Thermal Systems - Maryland, Inc. |
| Status | ACTIVE |
| Disk Material | SILVER |
| Burst Pressure | 300.0 PRESSURE POUNDS PER SQUARE INCH GAGE |
| Head Type | INSERT |
| Burst Temperature | 200.0 FAHRENHEIT DEGF |
| Disk Type | SOLID |
| Head Material | COPPER ALLOY |
| 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 |
|---|---|
| 77-37-00-10-37 | Sherman & Schroder Equipment Co., Inc. (USA) |
| 77737135-3 PRIMARY | Triumph Thermal Systems - Maryland, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 77737135 | 5/9 Secondary reference Triumph Thermal Systems - Maryland, Inc. |
NSN 4820-01-108-7828 is a Head and Disk,safety,pressure Re, manufactured by Triumph Thermal Systems - Maryland, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-108-7828 has 2 manufacturer part numbers on file: 77-37-00-10-37 (Sherman & Schroder Equipment Co., Inc.), 77737135-3 (Triumph Thermal Systems - Maryland, Inc.).
Key specifications for 77737135-3: Disk Material: SILVER; Burst Pressure: 300.0 PRESSURE POUNDS PER SQUARE INCH GAGE; Head Type: INSERT; Burst Temperature: 200.0 FAHRENHEIT DEGF. 6 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.