Tsurumi 40PUW2.25 Stainless Steel Auto-Alternation Submersible Pump for Wastewater Drainage with Vortex Impeller

Managing drainage and sewage systems with dual-pump coordination requires a robust technical solution with integrated auto-alternation control. This auto-alternation submersible vortex pump features automatic operation for duty-sharing, making it highly effective for sumps and drainage cycles. Its corrosion-resistant construction is configured for long-term service in environments that would destroy conventional iron pumping equipment.

Powered by a 0.25 kW / 415v three-phase motor, the system manages a maximum flow capacity of approximately 210 L/Min and reaches a peak head of approximately 6.6 m. The auto-alternation functionality allows for redundant pump management, providing start and stop based on liquid level. The induction motor is continuous-duty rated, providing stable discharge pressure for drainage tasks.

The hydraulic behavior is dictated by a vortex impeller that creates a centrifugal flow path, allowing 35 mm solids to bypass the main impeller vanes. This recessed configuration minimizes direct mechanical contact between suspended particles and the hydraulic parts, significantly reducing erosive wear. The whirlpool effect ensures the pump remains unchokable even when managing high concentrations of site debris in coordinated automated cycles.

Structural integrity is maintained through a resin and 304 stainless steel body, with a 304 stainless steel shaft for enhanced chemical compatibility. Sealing integrity is provided by a double-face mechanical seal located in an oil chamber featuring a proprietary Oil Lifter. Protection is reinforced by an anti-wicking cable entry block and a circle thermal protector that safeguards the motor from thermal and electrical overload.

FEATURES

• Auto-alternation control allows for coordinated dual-pump operation for redundancy in drainage systems.
• 304 stainless steel and resin construction provides superior durability and rust resistance in aggressive drainage.
• Vortex impeller design facilitates the passage of solids up to 35 mm, preventing clogging during automated transfer cycles.
• 304 stainless steel shaft offers excellent corrosion resistance and mechanical strength for continuous service.
• Double-face mechanical seal operating in an oil chamber ensures high sealing reliability.
• Tsurumi's Oil Lifter supplies lubricating oil to the seal faces even when the oil level is low, extending the unit's operational life.
• Integrated anti-wicking cable entry block protects the motor from moisture incursion even if the power cable is submerged.
• Circle thermal protector built into the motor housing proactively interrupts the circuit during thermal or electrical overload.