Masterflush 7640 RV Toilet - 304764001 - White

Dometic MasterFlush® 7640 RV Toilet – Pedal-Flush Macerating

Permanent Electric Toilet • Round Seat • Dual-Flush (Normal / Low) • Polar White

The Dometic MasterFlush® 7640 RV Toilet is the first pedal-operated macerating toilet in the RV industry, combining the familiar feel of a traditional RV toilet with the advanced performance of an electric macerator system. Manufactured by Dometic, the MasterFlush 7640 delivers powerful waste breakdown, improved odor control, and flexible installation options—without the need for a wall-mounted flush switch.

Designed as a direct replacement for gravity-flush toilets, the MF 7640 mounts to an existing floor flange and allows installation away from the holding tank, making it an excellent solution for RVs with dual bathrooms, towables, and motorhomes. With its dual-stage macerator pump, the toilet pulverizes waste using as little as 1 quart of water per flush, improving tank discharge efficiency and overall system performance.

Why Choose the Dometic MasterFlush 7640?

Industry-First Pedal-Flush Macerator Design

The MasterFlush 7640 allows RVers to flush using a foot pedal, just like traditional RV toilets—while delivering a powerful, electric macerating flush behind the scenes.

Dual-Flush Water Efficiency

• Normal flush: 2 quarts per flush

• Low flush: 1 quart per flush

• Push pedal slightly to add water before flushing

• Helps conserve fresh water and extend holding tank capacity

Superior Odor Control

Unlike gravity toilets, the MF 7640’s discharge plumbing isolates the holding tank from the bowl, eliminating the path for waste tank odors to enter the bathroom.

Proven MasterFlush Macerator Technology

• Dual-stage impeller macerator pulverizes waste and toilet paper

• Macerated effluent discharges more thoroughly from the tank

• Improves dump performance and reduces residual buildup

Key Features & Benefits

• Powerful macerating flush with swirl-jet action for full-bowl rinsing

• Ideal for towables or motorhomes with two bathrooms

• Familiar RV toilet appearance and operation

• No wall-mounted flush switch required – electronics built into pedal

• Mounts directly to existing floor flange for easy replacement

• Allows installation away from holding tank location

• Sparkling ceramic bowl is durable and easy to clean

• Pedal control lets you add water without a hand sprayer

• Full-tank shutdown protection prevents overfilling waste tank

• Self-contained unit simplifies installation

• Limited 1-year warranty

Specifications

• Brand: Dometic

• Series / Model: MasterFlush® 7640

• Flush Type: Electric macerating, pedal-activated

• Flush Modes:

  • Normal: 2 quarts per flush

  • Low: 1 quart per flush

• Bowl Material: Ceramic

• Color: Polar White

• Seat Style: Round

• Seat Height: 18-3/8"

• Overall Dimensions:

  • Height: 20"

  • Width: 15"

  • Depth: 19"

• Installation: Permanent; mounts to existing floor flange

• Hand Sprayer: Not included

• Warranty: Limited 1-year warranty

Frequently Asked Questions

What makes the MasterFlush 7640 different from other macerator toilets?

It’s the only macerating RV toilet operated by a foot pedal, offering familiar use with advanced electric performance.

Does this replace a gravity-flush toilet?

Yes. The MF 7640 is designed as a direct replacement and mounts to the existing floor flange.

Is this good for RVs with two bathrooms?

Absolutely. Its ability to be installed away from the holding tank makes it ideal for second bathrooms.

Does it use less water than standard RV toilets?

Yes. The low-flush mode uses just 1 quart, improving water efficiency.

Is a wall-mounted flush switch required?

No. The flushing electronics are fully integrated into the pedal, simplifying installation.