The Valve,vacuum Breaking, cataloged under National Stock Number 4820-00-010-5201, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Lockheed Martin Corporation Div Rotary and Mission Systems. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-010-5201 |
| Primary Part Number | PS470700001F001 |
| Item Name | Valve,vacuum Breaking |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Lockheed Martin Corporation Div Rotary and Mission Systems |
| Status | ACTIVE |
| Body Style | SINGLE CONNECTION, STRAIGHT FLOW |
| End Connection Quantity | 1 |
| Surface Treatment | ANODIZE OUTSIDE |
| First End Outside Diameter Tube Accommodated | 0.375 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY BODY |
| Absolute Pressure Setting | 14.0 |
| 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 |
|---|---|
| PS470700001F001 | Lockheed Martin Corporation Div Rotary and Mission Systems (USA) |
| Reference | Meaning |
|---|---|
| P31-262 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-00-010-5201 is a Valve,vacuum Breaking, manufactured by Lockheed Martin Corporation Div Rotary and Mission Systems, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-010-5201 has 1 manufacturer part number on file: PS470700001F001 (Lockheed Martin Corporation Div Rotary and Mission Systems).
Key specifications for PS470700001F001: Body Style: SINGLE CONNECTION, STRAIGHT FLOW; End Connection Quantity: 1; Surface Treatment: ANODIZE OUTSIDE; First End Outside Diameter Tube Accommodated: 0.375 INCHES NOMINAL IN. 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.