Franklin Electric Tri-Seal FPS4400 3B Series 304ss 4" Submersible Bore Pumps (Max 85LPM)

The Franklin Electric FPS4400 Tri-Seal 3B Series 4" Submersible Bore Pump is engineered for outstanding performance, durability, and efficiency in demanding bore water applications. Featuring Franklin’s proven Tri-Seal™ floating stage system, this pump delivers consistent flow and pressure while resisting wear from sand and abrasives — making it ideal for Australia’s rural, irrigation, and groundwater conditions.

Constructed from 304 stainless steel and high-strength thermoplastic components, the 3B Series offers excellent corrosion resistance and long-term reliability. The floating impeller design minimises axial load and reduces thrust wear, while the spring-loaded check valve ensures dependable backflow prevention. Designed to operate seamlessly with Franklin’s corrosion-resistant 4" submersible motors, the FPS4400 3B Series provides quiet, energy-efficient performance for years of trouble-free service.

FEATURES

• Tri-Seal™ Floating Stage System ensures superior sand and abrasion resistance
• 304 stainless steel hub, shell, and discharge head for maximum durability
• Acetal impellers deliver high efficiency and excellent wear performance
• Modified PPO diffusers and discs offer outstanding abrasive resistance
• Phenolic washer provides dependable down-thrust protection
• Floating impeller design reduces friction, ensuring quiet and efficient operation
• Spring-loaded check valve prevents backflow and is easy to remove for servicing
• Ceramic shaft sleeve and rubber discharge bearing protect against sand wear
• Patented impeller hub seal system provides radial and axial sealing for improved efficiency
• Designed for continuous-duty operation with Franklin 4″ submersible motors

SPECIFICATIONS

• Model: FPS-3A Series (Tri-Seal)
• Maximum Flow: 60 LPM (3.6 m³/h)
• Discharge Head: Up to 120 m (depending on model)
• Motor Power Range: 0.37 – 2.2 kW (½ – 3 HP)
• Stages: 4 – 31
• Discharge Port: 1¼″ BSP
• Maximum Water Temperature: 49 °C (120 °F)
• Maximum Diameter: 99 mm (with cable guard)
• Check Valve: Removable, spring-loaded type
• Shaft Sleeve: Ceramic
• Materials: 304 SS / Acetal / Modified PPO / Phenolic

APPLICATIONS

• Domestic and rural water supply systems
• Irrigation and stock watering applications
• Pressure boosting and tank filling
• Rainwater harvesting and bore water transfer

INCLUSIONS

• Franklin Electric FPS4400 3B Series 304SS Submersible Pump End
• Franklin Electric 4″ Submersible Motor (optional)
• Removable spring-loaded check valve
• User Manual