Patent ID: 8899392

Claim:
A damper for decreasing a piping vibration of a pipe, the damper comprising: a fixation part provided with a coupling hole formed therein to be coupled to the pipe, and coupled and fixed to the pipe such that the coupling hole makes contact with an outer circumferential surface of the pipe; a weight part connected to the fixation part, and provided at an inside thereof with a penetrating hole having a diameter larger than an outside diameter of the pipe formed thereto such that the pipe passes through the penetrating hole while the weight portion is spaced apart from the outer circumferential surface of the pipe; and a slitting portion formed in a slitting manner from one of the sides of the outer circumferential surfaces of the fixation part and the weight part to the coupling hole and the penetrating hole lengthways of the fixation part and the weight part, wherein a plurality of insertion grooves are formed in the weight part and spaced circumferentially in the weight part at an axial end face thereof, the plurality of insertion grooves being configured to removably receive one or more weight controlling members, whereby a weight of the weight part is increased by inserting one or more weight controlling members into the insertion grooves and the weight of the weight part is decreased by removing one or more of the weight controlling members from the insertion groove.