*PLUMBERSSTOCK EXPERT* responded:
Hi! We appreciate you asking for assistance in using this Pasco 4661 compression sleeve puller. The first step is to turn the water off before removing the angle stop. Try the nearest fixture to make sure the water is turned off. The fixture must not be getting any water. It is good to have a small bowl, a sponge or a towel handy when removing the stop valve since there will be some residual water held back in the pipe by the angle stop. Using two sets of pliers or wrenches, remove the angle stop. One plier or wrench is used to hold the nut and stabilize the pipe and the other is used to turn the angle stop in a counter-clockwise direction. To prevent damaging the pipe, it is recommended to use equal pressure on both pliers. The angle stop should be unscrewed, leaving the brass sleeve and the nut on the pipe. Please watch this video for demonstration.