Product Information
Description
Maytronics 9980891 Dolphin Non Return Flap, M4 / M5 / Wave 2010
Genuine OEM one-way flap that keeps debris in the basket.
The Maytronics 9980891 Dolphin Non Return Flap (PST-DL9980891) is the genuine OEM one-way valve that seats inside the filter intake on Dolphin robotic pool cleaners. It opens to let debris in during the cleaning cycle and closes when the robot pauses or lifts out of the pool, so leaves, sand, and fine grit stay locked in the basket. Replace yours when you notice debris falling out at the end of a cycle or when the rubber flap looks warped, torn, or stiff from chlorine exposure.
| Manufacturer | Maytronics |
|---|---|
| Model / MPN | 9980891 |
| SKU | PST-DL9980891 |
| Part Type | Non Return Flap (one-way debris valve) |
| Genuine OEM | Yes, Maytronics factory part |
| Fits | Dolphin Supreme M4 2010, Supreme M5 2010, Wave 60 / 65 / 80 / 90, M400, M500, Liberty, Bio, C3, C4, Sigma, Oasis Z5 |
| Location | Filter compartment intake / debris door |
| Material | Chemical-resistant rubber / polymer |
| Sold As | Each (1 flap) |
| Tools Required | None, snaps into place |
Which Dolphin models does the 9980891 flap fit?
It fits Dolphin Supreme M4 2010, Supreme M5 2010, Wave 60 / 65 / 80 / 90, M400, M500, Liberty, Bio, C3, C4, Sigma, and Oasis Z5 cleaners. Confirm by matching the existing flap shape in your filter basket housing before ordering.
How do I know it is time to replace the non return flap?
Replace it when debris falls out of the basket as the robot is lifted from the pool, when you see tears or stiffness in the rubber, or when the flap no longer sits flush against the intake opening.
Can I install this flap myself?
Yes. Open the filter compartment, pull the old flap out of its slot, and press the new 9980891 in until it seats fully. No tools and no service call required.
Additional Info
| Category | Parts Pool Parts Cleaner Parts |
| SKU | PST-DL9980891 |
| MPN | 9980891 |
| Manufacturer | Maytronics |
| Weight | 0.05 lb |
Let customers speak for us
Easy to order - received the next day!
Beautiful!!
The valve fit perfectly and works great.
Fast shipping and great price!
Does what a small weed- eater would do it minutes versus an hour
Great product does exactly what was advertised to do.
I ordered the wrong part. Customer service was very helpful. I returned it and within the week my credit card was credited back. Excellent customer service policy.
There was a delay in shipping due to postal service. They sent another part right away.
New model 59303 works great, but too bad the last generation Balboa WiFi module 50350 became un-useable.
Exactly as advertised and super fast shipping and delivery
