To make hydraulic equipment slowly controllable, while having a function as a holding valve between the hydraulic equipment and a control valve, by controlling an oil flow rate between such hydraulic equipment and control valve.

A main part Ha and a selector part Hb controlling this main part Ha are provided in a holding valve H, a poppet valve Va slid by pressure balance between a pressure of oil in a side of a cylinder S and a pressure of oil applying partly the oil in this cylinder side to act in an opposite cylinder side is provided in the main part Ha, a poppet valve Vb making partly the oil in the opposite cylinder side to the poppet valve Va flow out is provided in a selector part Hb, also a pilot valve P controlling a flow amount of this poppet valve Vb is provided, the poppet valve Va is slid to a position balancing a pressure in a side of the cylinder S and a pressure in a side of the opposite cylinder S by controlling an outflow amount of oil in the opposite cylinder side by this pilot valve P, and the flow rate of oil flowing in the main part Ha is controlled.