The Jobe Valves Service Kit for Topaz Megaflow Valves is the exact replacement for a leaky or worn diaphragm and includes a brand new filter. Due to the specific design, this repair kit excludes hot water valves on these models. The stress-free, easy installation of this service kit will make for a swift repair session so the high flow valve can get back to work. Simply remove the 6 screws from the outer diameter of the valve, pull apart the 2 valve halves and you will see the diaphragm assembly inside.