Pentair 98960311 Bulkhead Union Set
The Pentair 98960311 bulkhead union set is used to connect pool plumbing through the wall of compatible Pentair filter tanks. This part is commonly found on older Pentair Clean & Clear Plus cartridge filters and select legacy Pentair filtration systems that use a bulkhead-style inlet or outlet connection.
Key Details
- Manufacturer: Pentair
- Part Number: 98960311
- Union Size: 1-1/2″ x 2″
- Connection Type: Bulkhead union
- Color: Black
- Includes: Bulkhead union components required to pass plumbing through the filter tank wall
Compatible Applications
- Pentair Clean & Clear Plus cartridge filters manufactured prior to late 1998
- Selected older Pentair and American Products filter systems using 1-1/2″ x 2″ bulkhead unions
Function
This bulkhead union creates a sealed plumbing connection through the filter body while allowing the plumbing to be disconnected for service or equipment removal. It is typically installed at the inlet or outlet port of the filter tank.
When to Replace
- Water leaking around the filter tank connection
- Cracked, brittle, or deformed union body
- Threads no longer tighten or seal properly
- During filter replumbing or major filter service
Installation and Maintenance Tips
- Shut off power to the pump and relieve all system pressure before installation.
- Clean all mating surfaces on the filter tank before installing the new bulkhead union.
- Hand-tighten unions evenly to prevent cross-threading or tank damage.
- Inspect periodically for leaks, especially after seasonal startup or freezing conditions.
Related Products (Aqua Pool Supply)
- Pentair Clean & Clear Plus replacement parts
- Other Pentair bulkhead unions
- Pentair filter plumbing fittings
