These oval or circular rings should match the bowl shape to keep the seat stable

Bradley 115-134 Express One Sprhd/Empire Gray Replacement Part

Bradley S43-012 "Service" Ft Lvr Treadle Assy Replacement Part

the unit features a No

Electric seam weld joins top and body

Hayward Threaded Pressure Reducing Pressure Reducing Control Valve, 1/2 in Pipe Size - RPV2050TPE1 Nominal Size-34" X 1.25" These oval or circular ringsHelp protect chemical feed systems from over pressure conditions with this HAYWARD pressure reducing control valve. When the preset pressure is exceeded (valve has an adjustment screw that you can adjust in the field), the diaphragm moves up and the chemical flows out of the relief port back to the chemical tank or the suction side of the pump.