One -way valve of suppressing

The utility model discloses an one -way valve of suppressing, this one -way valve of suppressing include barrel and the piston of sealed assembly in the barrel, piston lower extreme spiral is equipped with and is used for adjusting its adjusting device of position from top to bottom, be equipped with on the barrel be used for right spacing limit structure is carried out in adjusting device's rebound. The utility model discloses an adjusting device concerns with the assembly of piston spiral to it is spacing that adjusting device can carry out the axial to the piston, bears too big ascending shearing force in order to avoid the shear pin. When limit structure is spacing to the piston axial, can accurately pack into in the cotter hole in order to make the shear pin, can the rotation regulation device, make it move and set for position with the shear pin of packing into. This one -way valve of suppressing's the limit structure and the processing position relation of cotter hole do not have high required precision, handling ease.