Experimental results show that attachment of a reclaiming device would not cause bad influence on the velocity stability but would increase the piston motion time under the same load condition if the switch point could be properly controlled, and experiments also indicate that the switch control differential pressure ΔPsw varies with Pc in receiver and the supply pressure Ps of the cylinder. So the selection of ΔPsw should consider some factors, such as the efficiency of reclaiming energy, simplicity and cost of reclaiming control method and the velocity stability of cylinder, etc.