Abstract: A pipe connection includes a main body, an inner sleeve, a water inlet connector, a water outlet connector, a circuit board, a control panel, at least one battery, a magnetically activated detector, an impeller, and a magnetic member. In operation, when the water flows through the impeller, the impeller is rotated, and the magnetic member is moved to pass by the detector intermittently so that the detector can transmit a detected signal to the circuit board which can calculate the rotation speed of the magnetic member so as to obtain the water flow rate. Thus, the pipe connection can calculate and indicate the water flow rate in the pipe so that when the flow rate of the output water from the pipe reaches a preset value, the user can shut the water flow to regulate and save the water flow.

Abstract: A pipe connection includes a main body, an inner sleeve, a water inlet connector, a water outlet connector, a circuit board, a control panel, at least one battery, a magnetically activated detector, an impeller, and a magnetic member. In operation, when the water flows through the impeller, the impeller is rotated, and the magnetic member is moved to pass by the detector intermittently so that the detector can transmit a detected signal to the circuit board which can calculate the rotation speed of the magnetic member so as to obtain the water flow rate. Thus, the pipe connection can calculate and indicate the water flow rate in the pipe so that when the flow rate of the output water from the pipe reaches a preset value, the user can shut the water flow to regulate and save the water flow.

Abstract: A foldable roller base for a sprinkler of the present invention has a roller base body having at least two assembly portions extending away from each other; each assembly portion has a cylinder with a plurality of limiting stops on a bottom edge; and at least two roller base arms coupled to the assembly portions of the roller base body, one end of each roller base arm having a pivoting portion, and the other end having a roller. The roller base arms utilize one end of the pivoting portions for coupling to the cylinders of the assembly portions, and the cylinders have a plurality of limiting stops on their bottom edges. Therefore, the roller base arms are capable of being rotated around the cylinder for different purposes.