Tsurumi 4-PN Submersible Corrosion-Resistant Water Feature Pump | 1/3 HP 115V

Product Details

The Tsurumi 4-PN is a highly efficient 1/3 HP submersible pump from the VANCS series, specifically engineered for longevity in demanding water conditions. Utilizing a unique combination of fiberglass-reinforced resin and 304 Stainless Steel, this pump is designed to resist corrosion that typically degrades standard cast iron pumps. It solves the problem of heavy, rust-prone equipment by offering a lightweight, portable solution that can handle light solids and even saltwater, making it a favorite for both residential water features and light industrial effluent tasks.

Key Features:

• Advanced Corrosion Resistance: Constructed with a 304 Stainless Steel motor housing and high-impact resin casing for superior durability in damp and corrosive environments.
• Vortex Impeller Design: The semi-vortex resin impeller creates a powerful centrifugal flow, allowing suspended solids to pass through the pump housing with minimal contact, reducing wear and clogging.
• Fish-Safe Lubrication: Uses high-grade liquid paraffin oil for the mechanical seal chamber, ensuring it is completely non-toxic for aquatic life and plants.
• Dual Inside Mechanical Seals: Features Silicon Carbide faces submerged in an oil chamber for the ultimate protection against motor water-ingress.
• Tsurumi Oil Lifter: A patented design that keeps seal faces lubricated even if the oil level drops or the pump is not perfectly vertical.

Specifications:

• Motor Output: 1/3 HP (0.25 kW)
• Voltage: 115V / 1-Phase / 60Hz
• Discharge Size: 2" NPT
• Max Flow Rate: 50 Gallons Per Minute (GPM)
• Max Head: 31 Feet
• Max Solids Diameter: 0.4 inches (10mm)
• Weight: 13.4 lbs (Highly portable)
• Cable Length: 20 Feet

Installation & Maintenance Tips:

• Self-Venting Housing: To prevent "air lock," ensure the pump is fully submerged. If air becomes trapped, briefly tilting the pump while submerged will allow the air to escape through the discharge.
• Winterization: If using in an outdoor pond in freezing climates, ensure the pump is either kept running to prevent ice formation or removed and stored in a bucket of water in a frost-free area.
• Suction Intake: Periodically check the intake screen for algae or leaf buildup to maintain optimal flow and motor cooling.

Common Uses/Applications:

• Residential Water Features: Perfect for powering medium-sized waterfalls, streams, and decorative fountains.
• Aquaculture & Fish Ponds: Safe for Koi and sensitive fish species due to its non-toxic paraffin lubrication.
• Septic Effluent: Designed to move filtered wastewater in septic systems where small solids may be present.
• Saltwater Systems: The resin and stainless steel construction makes it suitable for circulating water in marine environments.

Common Questions:

Q: Is this pump intended for continuous duty?

A: Yes, the Tsurumi 4-PN is rated for continuous operation, provided it remains submerged to ensure proper motor cooling.

Q: Can it be used in a sump pit?

A: Absolutely. Its compact size and 2" discharge make it an excellent choice for basement sumps or utility pits that collect drainage water.

Q: What is the benefit of the "PN" series over the "PU" series?

A: The PN series is specifically designed for effluent (small solids), whereas the PU series is more suited for raw sewage or larger solids. The PN series typically offers better efficiency for clear water and water features.

With its lightweight design and chemical-resistant construction, the Tsurumi 4-PN is the perfect solution for homeowners and professionals seeking a reliable, low-maintenance pump for clean and effluent water applications.