Piezoelectric valve and method of manufacturing the piezoelectric valve

A method of manufacturing a piezoelectric valve in which the valve is opened/closed utilizing a displacement of a laminated piezoelectric element, comprising:

• providing a piezoelectric valve, the piezoelectric valve comprising:
• a valve main body having a gas pressure chamber that receives compressed gas supplied externally,
• an actuator having a valving element, the laminated piezoelectric element that generates a driving force required for operating the valving element as the displacement, and a displacement enlarging mechanism that enlarges the displacement of the laminated piezoelectric element to be acted on the valving element, the actuator being disposed in the valve main body, and
• a pair of projecting pieces being positioned between the laminated piezoelectric element and the displacement enlarging mechanism and on both sides along a longitudinal direction of the laminated piezoelectric element, gaps being formed between the pair of projecting pieces and the laminated piezoelectric element;
• and
• supplying silicone onto a surface of the laminated piezoelectric element after being integrated into the actuator to coat the surface of the laminated piezoelectric element with the silicone.