
Product Information
Description
Pentair 274417Z Waste Seal for the FullFloXF Backwash Valve
Seals off the waste port while the valve is in the Filter position
The Pentair 274417Z waste seal is the seal inside a Pentair FullFloXF backwash valve that blocks off the waste port when the valve is in the Filter position. It sits in a key on the center diverter, backed by the waste seal spring (274421Z). Pentair's troubleshooting chart lists a dirty or damaged seal as one cause of water leaking to waste.
| Manufacturer | Pentair |
|---|---|
| Part Number | 274417Z |
| Pentair Description | Waste Seal |
| Fits | Pentair FullFloXF backwash valve |
| Valves With Filter Inlet on Top | 263080, 262507, 262509 |
| Valves With Filter Inlet on Bottom | 263081, 262508, 262511, 262512 |
| Works With | Waste seal spring 274421Z and center diverter 274416Z |
| Lubricant | Silicone based only, Dow Corning 111 or similar |
| SKU | PST-_274417Z |
My valve leaks to waste. Is it the seal?
Pentair lists dirt on the seal or a damaged seal as a cause of leaking to waste, fixed by servicing the valve. If the valve bore is scratched or heat damaged, Pentair says to replace the valve instead.
Which way does the seal go in?
There are two possible positions. The text on the center diverter states which side takes the seal, and the guide shows setup A for valves with the filter inlet on top and setup B for inlet on the bottom. In the Filter position the waste seal should block the waste port.
Is the spring included?
Pentair lists the waste seal spring as its own part, 274421Z.
Additional Info
| Category | Parts Pool Parts Filter Parts |
| SKU | PST-_274417Z |
| MPN | 274417Z |
| Manufacturer | Pentair |
| Weight | 0.15 lb |