Tsurumi 50TM21.5 Titanium High-Head Seawater Pump for Marine Drainage with Semi-Vortex Impeller

Marine water transfer and shipboard drainage require a pumping solution with superior chemical resistance and high-head capability. This seawater transfer pump is engineered for handling seawater and corrosive liquids in demanding marine environments. Its combination of titanium and resin ensures a long service life where standard stainless steel pumps would succumb to pitting and rapid oxidation.

Performance reaches up to 660 L/Min with a maximum head of 19.5 m, powered by a 1.5 kW / 415v three-phase motor. This induction motor is continuous-duty rated through a 50 mm discharge bore. The high-head characteristic allows for effective liquid transfer in deep shipboard sumps where significant vertical lift is required for marine drainage.

The semi-vortex impeller enables 20 mm solids passage, ensuring that particles move through the pump casing with minimal hydraulic wear. This arrangement is ideal for liquids bearing organic matter, as the semi-vortex design minimizes impeller contact to prevent obstruction. The configuration maintains high operational efficiency while resisting the abrasive effects of coastal site runoff.

Structural integrity is maintained through the use of titanium and engineering resin, supported by dual mechanical seals with SiC+SiC lower faces for durability. Protection is provided by a circle thermal protector that interrupts the circuit during overcurrent or heat buildup. The unit utilizes an anti-wicking cable entry to protect the motor from moisture, while the liquid paraffin lubrication ensures non-toxic operation.

FEATURES

• Titanium and resin construction ensures outstanding corrosion resistance for aggressive marine drainage.
• Semi-vortex impeller configuration enables a 20 mm solids passage, reducing wear on internal components.
• High-head performance reaching up to 19.5 m allows for effective vertical transfer in deep shipboard sumps.
• Double-face mechanical seal with SiC lower faces provides superior protection against abrasive seawater particles.
• Patented Oil Lifter technology keeps the mechanical seal faces lubricated even if the oil volume falls to low levels.
• Circle thermal protector built into the motor housing proactively interrupts the circuit during electrical overload.
• Non-toxic liquid paraffin is used as the lubricant, making the pump safe for marine and aquaculture duties.
• Watertight cable entry with an anti-wicking block prevents moisture from entering the motor through capillary action.