| 摘要 |
PURPOSE:To provide a pressure type booster for which cost reduction is available by decreasing the number of parts to be used, and improve reliability by decreasing the number of sealed parts. CONSTITUTION:The valve disc supporting cylindrical part 49 of a tubular member 42 supports the valve disc 33 of a poppet valve 30 in its state to be sealed against a valve body 15. A supporting member which is conventionally supposed to be necessary support the valve disc separately can be eliminated, thus the number of parts can be decreased to that extent. It is then possible to improve ease of assembly and reduce its cost. Since the valve disc supporting cylindrical part 49 presses the valve disc 33 against the valve body 15 to generate sealing, number of sealed parts conventionally supposed to be necessary at two locations at least, between the valve disc and the valve body and between the valve disc and a ring-shaped member is reduced, the number of spot for air-tightness control and is decreased reliability is increased. |
