PURPOSE: To provide a pressure device for reparing material in pipe conduit reparing work capable of readily performing excellent reparing work and also capable of being employed even in the case where adhesive failures exist in the reparing material constructed in the reparing work by restraining the adhesive failures of repairing material to the pipe conduit inner surface and the damages of an impermeable film from being generated during reparing work.

CONSTITUTION: A pressure device 1 is a cylindrical shape having a diameter approximately equal to the inner diameter of a pipe conduit to be repaired, wherein one end 1a thereof is blocked and the other end 1b side is opened and water pressure is introduced into the inner part thereof, and the pressure device 1 is made up of film material 2 having flexibility and impermeability to fluid.