Hello, first time here.
I have a Sundance Spa (19 years old). When on high speed mode the flow out the jets is good sometimes bad another. I removed the diverter valve and noticed below about a foot down is a round disc about 2" in diameter. The disc is just laying down there and is free to move around.
Does anyone know what this disc is for and how it works?
Thanks in advance for any help.
