Maytronics 9991046-ASSEMBLY Rapid Drain Flaps / Diaphragm Pair (Set of 2) for Dolphin Robotic Pool Cleaners | Genuine Replacement

The Maytronics 9991046-ASSEMBLY (also commonly listed as 9991046-ASSY) is a genuine Dolphin robotic pool cleaner replacement rapid drain flap kit, also described by many sellers as a diaphragm pair. This kit includes 2 flaps/diaphragms used in compatible Dolphin cleaners to help control water drainage and internal flow during operation and when lifting the cleaner from the pool.

Key Features

• Part number: 9991046-ASSEMBLY / 9991046-ASSY
• Brand: Maytronics (Dolphin genuine part)
• Product type: Rapid drain flaps / diaphragm replacement kit
• Quantity: Set of 2
• OEM replacement part for compatible Dolphin robotic pool cleaners
• Helps maintain proper drainage and cleaner handling performance

What This Part Does

• Replaces worn, torn, or damaged rapid drain flaps / diaphragms
• Helps water drain more efficiently when removing the cleaner from the pool
• Supports proper internal water flow behavior in compatible cleaner housings
• Helps restore normal cleaner performance when old flaps have hardened or failed

Common Compatibility Notes (Verify Before Ordering)

• Commonly listed for select Maytronics Dolphin robotic cleaners in families such as M200/M400/M500, C3/C4, Nautilus CC Plus / Supreme, Triton Plus, Oasis Z5/Z5i, Sigma, and select Wave models (version dependent)
• Retailer compatibility lists vary widely by model revision and regional naming
• Always verify your exact cleaner model and existing part number before ordering

Important Notes

• This item is commonly described using two names: rapid drain flaps and diaphragm pair.
• The suffix may appear as -ASSY or -ASSEMBLY depending on the seller listing format.
• Confirm whether your service job requires only the flap pair or additional housing/seal components.

Installation Notes

• Disconnect the cleaner from the power supply before servicing.
• Open the relevant housing area per your Dolphin service procedure and remove the worn flaps/diaphragms.
• Install the new flaps in the same orientation as the originals.
• Inspect surrounding plastic tabs, seats, and seals for wear while the cleaner is open.
• Test cleaner operation and drainage behavior after reassembly.

Related Products (Aqua Pool Supply)

• Maytronics 9991046-ASSY Rapid Drain Flaps (Search)
• Dolphin Robotic Cleaner Parts (Search)
• Dolphin Nautilus CC Plus Parts (Search)
• Dolphin Triton Plus Parts (Search)
• Dolphin Filters & Filter Parts (Search)

Maintenance Tips

• Inspect drain flaps/diaphragms periodically if the cleaner feels unusually heavy when lifting from the pool.
• Rinse the cleaner after use to reduce buildup that can stiffen or damage rubber components.
• Replace worn flaps promptly to help maintain proper drainage and cleaner handling.
• Check nearby seals and moving parts during service to prevent repeat disassembly later.