
Quick overview
- Genuine Pentair Factory assembly 155709, supplied as the complete connection.
- Joins pump to filter The short run of plumbing that carries water from the Dynamo pump discharge into the filter.
- Sand Dollar system Called out on the parts diagram for the Pentair Sand Dollar above ground pool filter system.
- Also on the Cristal-Flo II diagram Listed as well for the Sta-Rite Cristal-Flo II above ground sand filter system.
- Check the model callout The source lists this assembly as SD35 in the title and as SD20 in the page address, so confirm your tank size before ordering.
- Sized by tank Companion assemblies exist for the SD40 and SD60, so the size of your Sand Dollar decides which one you need.
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Product details
This is the genuine Pentair 155709 pump to filter connection assembly for the Sand Dollar above ground filter system. It is the piece of plumbing that carries water from the Dynamo pump discharge across to the filter inlet.
Why it gets replaced
The connection between pump and filter sits outdoors, holds pressure every time the system runs, and takes the strain whenever the pump or the tank is moved. Cracks at a fitting, a split in the body, or threads that no longer hold a seal all end the same way, with water on the ground and a system that loses prime. Replacing the whole assembly rather than patching it puts the joint back to the dimensions the system was built around.
Confirm the model before ordering
The source information for this part is not consistent about the tank it serves. The listing title and description identify it as the Dynamo pump to SD35 connection, while the original page address refers to SD20. Both readings are carried here rather than choosing one. Check your own tank model, and note that the SD40 and SD60 take their own separate assemblies.
Where it appears
Pentair shows this assembly on the Sand Dollar above ground pool filter system parts diagram, and it also appears on the Sta-Rite Cristal-Flo II above ground sand filter system diagram.
| Brand | Pentair |
|---|---|
| Manufacturer part number | 155709 |
| UPC | 788379789091 |
| Type | Pump to filter connection assembly |
| Application | Dynamo pump to SD35 in the Sand Dollar filter system |
| Alternate model callout | The source also labels this assembly SD20 |
| Shown on | Pentair Sand Dollar above ground filter system and Sta-Rite Cristal-Flo II above ground sand filter system parts diagrams |
| Shipping weight | 1.3 lb |
| Ships | Parcel |
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