Pentair Bottom Bulkhead for Quad DE and FNS Plus Filters In stock$3314
Quick overview
- Genuine Pentair Factory part 178575Z, not an aftermarket fitting.
- Quad D.E. filters Pentair lists it as the bottom bulkhead for the Quad D.E. filter.
- FNS Plus The product title also lists it for FNS Plus filters, so it covers both families.
- Base of the tank The bulkhead is the fitting at the bottom of the filter, where the tank meets its plumbing.
- Stops a base leak Weeping at the bottom of a DE filter often traces back to the bulkhead rather than the tank itself.
- Serviceable part Replaced on its own, without buying a whole tank bottom assembly.
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Product details
The Pentair 178575Z is the bottom bulkhead for the Quad D.E. filter. The product title also lists it for FNS Plus filters, so it turns up under both families; check the model plate on your tank before ordering.
What it does
The bulkhead is the fitting at the base of the filter tank where the tank passes through to its plumbing. It carries the full pressure of the system and is sealed against the tank, which makes it one of the first places to look when a DE filter starts weeping low down.
Replacing it
The bulkhead is a serviceable part in its own right, so a base leak does not automatically mean a new tank. If the tank body itself is cracked or distorted, the complete tank bottom assembly is the larger repair, but a failed bulkhead is fixed with this part alone.
| Brand | Pentair |
|---|---|
| Manufacturer part number | 178575Z |
| UPC | 788379671525 |
| Type | Bottom bulkhead |
| Fits | Pentair Quad D.E. filters |
| Also listed for | FNS Plus filters |
| Position | Bottom of the filter tank |
| Shipping weight | 0.3 lb |
| Ships | Parcel |
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