Patent ID: 7841628

Claim:
A joint for use in a fluid control apparatus comprising a plurality of components arranged in a row, for causing a fluid passage outlet of one of two apparatus components in each adjacent pair thereof to communicate with a fluid passage inlet of the other apparatus component, for causing a fluid passage outlet of another device or an external inlet pipe extending from a fluid source to communicate with a fluid passage inlet of the apparatus component at one end of the fluid control apparatus, or for causing an external outlet pipe provided for a device requiring a control fluid to communicate with a fluid passage outlet of the apparatus component at the other end of the fluid control apparatus, the joint being positionable on an apparatus installation side of the apparatus component and comprising a connecting member having a groove formed therein centrally thereof for the apparatus component to be fixed thereto with male screw members, and a communication member existing in the groove and having a communication channel, an entire length of the communication channel being formed in the communication member, the communication member being made of a corrosion-resistant material, the connecting member being made of a material smaller than the material of the communication member in specific gravity.