Spindle, For Symmons Temptrol ValveMfr #: TA 10 RP Symmons TA 10 spindle automatically adjusts to balance the hot and cold water pressure Brass and bronze construction with stainless steel piston Genuine replacement part for Symmons Temptrol valves Solid brass and bronze with a stainless steel piston Replacement for the TA 10 Spindle Assembly and the TA 4 Seat Kit in any Temptrol valve, it automatically resets the warranty