Using this Brizo Allaria Sensori Volume Control Trim is easy. Just turn the twisting lever handle to adjust the water volume. When installing, make sure the working pressure is between 45 - 80 psi and the wall thickness is within the compatible range of 2 1/8' - 2 3/4'. If you need to extend the rough installation, use the RP100304. As for maintenance, clean it regularly with a soft cloth to keep its luxurious look. Avoid using harsh chemicals as they may damage the premium brass material. Also, check the pressure from time to time to ensure it's within the recommended range for smooth operation.