| 摘要 |
<p>The present invention relates to a shut-off member of a pressure reducing valve of a pressure regulator device, such as a diaphragm-type first stage for scuba diving. Such shut-off member consists of an enlarged head connected to a shaft and cooperates with a valve seat that separates a chamber supplied with high pressure gas from a chamber in which gas is at a lower pressure. According to the invention, said enlarged head and an end section of predetermined length of the shaft, connected to said enlarged head, are seamlessly coated with at least one layer of elastomeric material. Said coating of elastomeric material is limited to an end portion of the shaft connected to the enlarged head and said coated shaft portion is entirely contained in the high-pressure chamber in any operating position of the shut-off member.</p> |
