Dometic T-Series TW24 Marine Waste Discharge Pump – 24V is a holding tank discharge pump designed to move collected toilet wastewater out of a marine sanitation tank. It operates on a 24V DC electrical supply and serves the discharge stage of the onboard waste system. For boats and yachts with a separate holding tank, this Dometic waste discharge pump provides a dedicated way to empty stored waste through a correctly installed discharge line. It is intended for tank emptying rather than generating the vacuum used to flush a VacuFlush toilet.

The TW24 delivers a specified flow rate of 300 US gallons per hour, equivalent to approximately 1,136 litres per hour. Its self-priming capability reaches up to 10 ft., stated by Dometic as 3.3 m of water, allowing installation above the holding tank within the permitted suction and discharge limits. The T-Series design can run dry without damage, a useful feature when the tank finishes emptying. These characteristics make it a practical marine waste pump for managing stored wastewater aboard vessels equipped with a compatible sanitation system. Actual tank-emptying performance depends on the installation, including the suction and discharge arrangement.

For this 24V model, the specified average current draw is 3 amps. This is the appropriate figure for the TW24; the 6-amp rating applies to the 12V version. Dometic also identifies quiet operation and a thermally protected motor as TW24 features. These details help buyers select a holding tank pump that matches their vessel’s electrical supply and operating requirements. Before ordering a replacement, check the existing pump voltage, available installation space, hose connections, and discharge layout. Matching these details is particularly important when replacing an older boat toilet pump or changing the type of discharge pump fitted to the sanitation system.

The pump uses a glass-filled polypropylene body, EPDM duckbill valves, and bellows manufactured from engineered PE/PP resin. Its specified weight is approximately 3.2 kg, and the T-Series plumbing connection size is 38 mm / 1½-inch internal diameter sanitation hose or suitable PVC pipe. Horizontal installation is recommended, with the pump positioned above the holding tank where possible. Buyers should allow access for inspecting hose connections and servicing the pump assembly. This Dometic pump can also work with Dometic Tank Discharge control systems, giving owners a control option for a compatible installation.

Key Features:

• Dometic T-Series TW24 Marine Waste Discharge Pump – 24V provides dedicated holding tank discharge for compatible marine sanitation installations. Its role is to transfer stored wastewater from the tank into the discharge plumbing.
• 24V DC operation: Designed for a matching 24V supply, with an average current draw of 3 amps.
• Specified discharge capacity: Rated at 300 US gallons per hour, approximately 1,136 litres per hour.
• Self-priming capability: Primes to a stated maximum of 10 ft. of water, subject to the installation’s combined suction and discharge requirements.
• Dry-running capability: The T-Series pump can run dry without damage when the holding tank empties.
• Quiet operation: Dometic identifies low-noise operation and a thermally protected motor as features of the TW24.
• Serviceable construction: The assembly incorporates bellows and duckbill valves, with individual replacement components identified in Dometic’s documentation.

Applications / Suitable For:

• Dometic T-Series TW24 Marine Waste Discharge Pump – 24V is suitable for boats and yachts requiring a 24V holding tank discharge pump. Confirm the electrical supply and plumbing arrangement before installation.
• Marine toilet holding tanks: Used downstream of the waste collection tank to discharge stored wastewater; it performs a different function from a toilet flushing or vacuum pump.
• Replacement discharge installations: Suitable for consideration when replacing an existing tank discharge pump, after checking hose sizes, mounting space, and the manufacturer’s installation requirements.
• Sanitation system refits: Provides a bellows-type discharge option when planning or updating compatible onboard waste plumbing.
• Controlled tank-emptying systems: Can integrate with Dometic Tank Discharge controls when installed according to the applicable instructions.

FAQs:

Q: What is the Dometic T-Series TW24 Marine Waste Discharge Pump – 24V used for?
A: It empties wastewater from a marine holding tank through the vessel’s discharge plumbing. It is a tank discharge pump, not a VacuFlush vacuum pump.

Q: How much current does the TW24 draw?
A: The 24V TW24 draws approximately 3 amps on average. The 6-amp specification belongs to the 12V version.

Q: Can this marine toilet pump run dry?
A: Yes. Dometic states that the T-Series discharge pump can run dry without damage.

Q: Can the pump be mounted above the holding tank?
A: Yes. It is self-priming, and installation above the tank is recommended where possible. Horizontal mounting is preferred; suction and discharge lift limits must be considered together.