Coupling solenoid valve

A coupling solenoid valve of which both side faces in the valve-width direction correspond to a first coupling face and a second coupling face for being coupled with another solenoid valve, said coupling solenoid valve comprising:

• a main valve unit including
• plurality of coupling communication holes passing through in the valve-width direction,
• a valve hole through which said coupling communication holes mutually communicate, and
• a spool for switching a channel accommodated within said valve hole;
• and
• a solenoid operating unit connected with said main valve unit;
• wherein the housing of said main valve unit is divided into plurality of blocks having essentially the equivalent horizontal width, and includes a center block positioned in the center, and a synthetic resin bottom block connected to the bottom of said center block;
• wherein said valve hole extending in the axial direction of said main valve unit is formed in said center block;
• and
• wherein said plurality of coupling communication holes are formed in said bottom block, and also a connection tube protruding from said respective coupling communication holes to one coupling face side is integrally formed in said bottom block, and further, circular seal members are applied on the position of the other coupling face side within said respective coupling communication holes, and said corresponding coupling communication holes are connected in an airtight manner by said connection tube and said seal members of the adjacent solenoid valves being fitted to each other when plurality of solenoid valves are coupled.