
Quick overview
- Genuine Pentair Factory part 357150, the cam and ramp clamp for WhisperFlo pumps.
- Cam and ramp style The newer locking style, not the older threaded lid arrangement.
- Black plastic Molded plastic, as originally supplied.
- Fits WhisperFlo WF and WFE Listed in the Pentair WhisperFlo WF and WFE pump parts group.
- Holds the lid down The clamp is what pulls the lid onto its o-ring, so a cracked one costs the pump its prime.
- Match your lid style Cam and ramp clamps pair with the cam and ramp lid, so confirm which style your pump has.
Similar products
Other products people compare with this one.
Product details
The Pentair 357150 is the black plastic cam and ramp clamp for the WhisperFlo pump. It is the ring that locks the strainer pot lid down, drawing it onto its o-ring as the clamp is turned.
Why it matters
Everything upstream of the impeller runs under vacuum. If the lid is not being pulled down evenly, the pump does not leak water, it draws air. That shows up as slow priming, an air pocket that will not clear from the strainer pot, a noisier pump and reduced flow. A clamp with a cracked ramp or a broken lug is a common and easily missed cause.
Check the lid style first
WhisperFlo pumps have been built with more than one lid arrangement over the years. This is the cam and ramp style, which pairs with the matching cam and ramp lid. Look at your pump before ordering rather than going by model name alone.
Fitting
Clean the sealing face, lubricate the lid o-ring with a pool rated silicone lubricant, and turn the clamp until it seats. It should draw down with hand pressure. If it takes force, something is not aligned.
| Brand | Pentair |
|---|---|
| Manufacturer part number | 357150 |
| UPC | 788379659707 |
| Type | Cam and ramp clamp |
| Material | Plastic |
| Color | Black |
| Part type | Pool pump part |
| Fits | Pentair WhisperFlo WF and WFE pumps |
| Also listed for | Sta-Rite IntelliPro VS+SVRS variable speed pump parts |
| Shipping weight | 0.9 lb |
| Ships | Parcel |
Request a quote
Need a volume price, a freight quote, or pricing in writing before you order? We reply the same business day.
Customer reviews
More from Pentair
Questions and answers
What people ask about this product, answered by our pool techs.





















