310 and thus the component c is sucked and grabbed when the component c is sucked and grabbed on the end of the nozzle spindle 300 by relatively rotating the valve unit 500 in the other side direction r 2 as illustrated in fig9 b the first communication vent 112 communicates with the first penetrating vent 510 and the second communication vent 114 communicates with the fourth penetrating vent 540 that is the cylinder space 110 is in the p 2 state when the cylinder space 110 is in the p 2 state both the first communication vent 112 and the second communication vent 114 communicate with the negative pressure space 410 accordingly a state where the component c is sucked and grabbed on the nozzle spindle 300 is maintained and air of the space above the piston unit 200 flows out from the cylinder block unit 100 as indicated by an arrow formed of a dotted line in fig9 a accordingly the piston unit 200 is moved in the up direction and the nozzle spindle 300 maintains continuously a state where the nozzle spindle 300 sucks and grabs the component c like this when the valve unit 500 is rotated more relatively in the other side direction r.