Pentair Coil/Tubesheet O-Ring Package | 77707-0117 Pool Filter Grids Functional purpose: Controls flow direction

Functional purpose: Controls flow direction and port selection within the valve manifold to route water where needed

this grill head resists corrosion while efficiently retaining heat for even cooking across the grilling surface

1 meter length

secure pool and spa branch connections

Concentrated Warmth in a Luxe 33-Inch Copper Silhouette

Pentair Coil/Tubesheet O-Ring Package | 77707-0117 Pool Filter Grids Functional purpose: Controls flow directionWhat This Part Is Used For Pentair 77707 0117 Coil Tubesheet O Ring Package is a replacement sealing kit used in compatible Pentair heater assemblies. It provides O rings for sealing the coil and tubesheet connections. Why This Part Matters Worn O rings can cause internal heater leaks and pressure loss. Replacing them restores proper sealing and helps prevent water intrusion into critical components. This is especially important during heater rebuilds