Autotrol Valve Disc Set 163/168(155a152)

Restore reliable cycling to your Autotrol valve with this genuine Valve Disc Set for the 163 and 168 models, referenced 155a152 and supplied by Pentair. The set includes the sealing discs that open and close the valve's internal ports as the control head rotates through its regeneration sequence, making it one of the most important wear items in any Autotrol rebuild.

Why disc sets matter

Inside an Autotrol control valve, the discs seal against ports to direct water through the service, backwash, brine, and rinse positions. They are in constant contact with moving surfaces and water flow, so over time they harden, scratch, take a set, or wear unevenly. When that happens, you may see internal leaks, weak or incomplete regeneration, hard water slipping past during service, or water running continuously to the drain. Because the discs work as a matched group, replacing the full set at once ensures even, consistent sealing rather than pairing a fresh disc with worn neighbors.

• Genuine Pentair Autotrol valve disc set
• Fits Autotrol valve models 163 and 168
• Reference number 155a152
• Restores proper port sealing and cycle control
• Item weight: 0.19 lbs
• Ideal for valve rebuild and maintenance kits

If your softener has gradually lost capacity, fails to regenerate cleanly, or shows signs of internal bypass, a fresh disc set is one of the most effective and economical fixes available. This is a part that professional water treatment technicians routinely replace during scheduled overhauls, often alongside seals and springs, to return an aging valve to like-new sealing performance.

Before ordering, confirm your valve is a 163 or 168 model so the disc geometry matches your control body exactly. It also helps to inspect the sealing surfaces and o-rings while the valve is apart, since addressing related wear in the same service visit prevents repeat teardowns. With a new disc set installed, your Autotrol valve returns to crisp, dependable cycling and efficient soft-water delivery. Replacing the discs as part of a planned overhaul, rather than waiting for a hard-water complaint, lets you schedule the work on your terms and keeps the household supply consistently soft between service intervals.