| 摘要 |
PURPOSE:To improve productivity and reliability, by integrally forming and simplifying the connection between a conventional pressure switch and accumulator unit. CONSTITUTION:A diaphragm 15 is held between a diaphragm seat 1a worked to a pressure tank 1 and base 16 and formed as a pressure switch. Then three places as conventionally sealed, that is, sealed by the holding of a diaphragm, sealed in a screw part of a seal and PS pipe, sealed by welding the pressure tank and the PS pipe, and so on can be sealed only by the holding of the diaphragm 15 to improve reliability. Further different from a device as in the past, the sealing of said welding is removed to eliminate the generation of troubles due to residual distortion of the tank 1 and defect of pin holes or the like. |
