Patent ID: 7004199

Claim:
A fluid control apparatus which comprises a plurality of lines, each of the lines comprising a lower layer having a plurality of coupling members arranged in a front-to-rear direction and an upper layer having a plurality of fluid control devices arranged in a front-to-rear direction and wherein a front and a rear block coupling serving as lower layer components of each line and a shut-off valve mounted as an upper layer component on both the front and rear block couplings are arranged laterally of the line, a front-to-rear channel in the front block coupling and a front-to-rear channel in the rear block coupling being closable or openable by operating an actuator of the shut-off valve, the fluid control apparatus being characterized in that at least one of line interconnecting means interconnecting a first and a second line adjacent to each other laterally thereof comprises a lateral projection formed on one of the front and rear block couplings of the first line, a recessed portion formed in the block coupling of the second line for the lateral projection to fit in, a coupling branch channel formed in the block coupling provided with the lateral projection and having an end opening in a coupling body upper surface and another end opening in an upper surface of the lateral projection, a first valve body branch channel formed in a body of the shut-off valve of the first line for always causing a main channel in the valve body to communicate with the coupling body upper surface opening of the coupling branch channel, and a second valve body branch channel formed in a body of the shut-off valve of the second line for always causing a main channel in the valve body to communicate with the lateral projection upper surface opening of the coupling branch channel.