Fleck Hole Plug, 7/8"

This 7/8-inch Fleck Hole Plug (FL16493) is a genuine Pentair component used to seal a 7/8" opening in a Fleck control-valve body or cover. The plug closes off an unused port or access hole, keeping water, salt dust, and debris from reaching the valve's internal timing and drive components. Sized precisely at 7/8", it presses or snaps into the matching opening to restore a clean, sealed surface.

While it is a simple part, an open or poorly sealed hole can let moisture and contaminants into sensitive areas of the valve, or in some locations allow a minor leak to develop. Over time, that exposure can corrode contacts, foul gears, or invite grit into spaces that should remain clean, so using the correctly sized plug genuinely matters to the valve's longevity.

• Genuine Fleck hole plug, 7/8" size
• Seals an unused 7/8" opening in the valve
• Blocks moisture, salt dust, and debris
• Simple press-in or snap-in fit
• OEM-correct part for Fleck control valves
• Protects internal components from contamination

Around a water softener, the air is often damp and salt-laden, conditions that are hard on exposed internal components. Even a small unsealed opening can let that environment reach the timer and drive mechanism, gradually shortening the life of parts that are more expensive and time-consuming to replace. A properly fitted plug is a low-cost way to keep those areas protected.

A missing or cracked hole plug is easy to overlook during service, especially when attention is focused on the moving parts of a repair. Yet replacing it helps protect the costlier mechanism inside and keeps the valve sealed and tidy. For installers and homeowners maintaining Fleck-equipped softeners and filters, keeping correctly sized genuine plugs on hand ensures the valve always goes back together properly sealed after any repair, contributing to dependable long-term operation.

For installers, keeping correctly sized plugs in stock means a valve never goes back together with an open or improperly sealed hole. Because the 7/8-inch size is specific, having the right plug on hand avoids the temptation to improvise with an ill-fitting substitute that may not seal or stay put. It is a small, low-cost part that quietly safeguards the more expensive timer and drive components from the moisture and salt dust that surround every softener.