Due to a problem with a leaking piston assembly in our neutralizer tank, I had to replace this part. The parts were procured from the Plumbery in Mt. Airy.
Here is the actual piston assembly as installed.
After the repair, I refreshed the level of the AN material that was needed. This process needs to be repeated about every 3 months. The level of material in the tank should be about 2/3 full.