Power Grid Devices Econco
Communications - Switch Tubes
| Product Description | Emitter | Cooling | Eb,kV | Ib,A | Po (kW) | Model Number |
| 4CPW10,000R rebuilt water cooled Tetrode | Thoriated | Water | 20 | 20 | 370 | 4CPW10,000R |
| 8772 rebuilt water cooled Triode | Thoriated | Water | 40 | 150 | 4500 | 8772 |
| 8773 rebuilt air cooled Triode | Thoriated | Air | 40 | 150 | 4500 | 8773 |