Manifold solenoid valve

A manifold solenoid valve having a plurality of valve assemblies, each being provided with a spool valve shaft, which is movable to a position of causing an air supply port to communicate with an output port and a position of causing the output port to communicate with an exhaust port, and with a pilot solenoid valve switching a position of supplying pilot pressure to the spool valve shaft and a position of stopping the supply, the manifold solenoid valve comprising:

• a base, to which each of the valve assemblies is connected and in which a common air-supply flow path communicating with the air supply port, a common exhaust flow path communicating with the exhaust port, and a common pilot air-supply flow path supplying the pilot pressure to the pilot solenoid valve are formed;
• an air supply block, in which a main flow path communicating with the air-supply flow path, and an internal pilot flow path communicating with the pilot air-supply flow path are formed and which is detachably connected to the base;
• and
• an end block connected directly to the air supply block connected to the base to cause the main flow path and the internal pilot flow path to communicate with each other when the pilot solenoid valve is set to an internal pilot type, and connected to the air supply block via an external pilot block, in which an external pilot flow path communicating with the pilot air-supply flow path is formed and which shuts off communication between the pilot air-supply flow path and the main flow path, when the pilot solenoid valve is set to an external pilot type,
• wherein the pilot solenoid valve is permitted to be set to any of the internal pilot type of supplying the pilot pressure to the pilot air-supply flow path via the main flow path, and the external pilot type of supplying the pilot pressure to the pilot air-supply flow path via the external pilot flow path of the external pilot block by adding on the external pilot block to the air supply block.

A manifold solenoid valve having a plurality of valve assemblies, each being provided with a spool valve shaft, which is movable to a position of causing an air supply port to communicate with an output port and a position of causing the output port to communicate with an exhaust port, and with a pilot solenoid valve switching a position of supplying pilot pressure to the spool valve shaft and a position of stopping the supply, the manifold solenoid valve comprising:

• a base, to which each of the valve assemblies is connected and in which a common air-supply flow path communicating with the air supply port, a common exhaust flow path communicating with the exhaust port, and a common pilot air-supply flow path supplying the pilot pressure to the pilot solenoid valve are formed;
• an air supply block, in which a main flow path communicating with the air-supply flow path and an internal pilot flow path communicating with the pilot air-supply flow path are formed, the air supply block being detachably connected directly to the base when the pilot solenoid valve is set to an internal pilot type, and being connected to the base via an external pilot block, in which an external pilot flow path communicating with the pilot air-supply flow path is formed and which shuts off communication between the pilot air-supply flow path and the main flow path, when the pilot solenoid valve is set to the external pilot type;
• and
• an end block connected to an outer surface of the air supply block,
• wherein the pilot solenoid valve is permitted to be set to any of the internal pilot type of supplying the pilot pressure to the pilot air-supply flow path via the main flow path, and the external pilot type of supplying the pilot pressure to the pilot air-supply flow path via the external pilot flow path of the external pilot block by adding on the external pilot block to the air supply block.