HCP F-31UV 1 HP 3" Submersible Trash Pump | 145 GPM Flow Rate | Handles 1-3/16" Solids | Available in 120V + 240V Single Phase | Cast Iron & SS Build

Up to 145 GPM • Handles 1-3/16" Solids • Single-Phase 120V or 240V

The HCP F-31UV (F-31U) 1 HP 3" Submersible Trash Pump is a heavy-duty electric submersible pump designed for dewatering applications involving debris-laden water and sewage. Built to handle solids up to 1-3/16", this pump is engineered for construction sites, wastewater environments, and industrial applications where clear-water pumps are not suitable.

This model delivers high flow capacity up to approximately 145 GPM at low head while maintaining reliable performance across its operating range. A vortex-style cast iron impeller allows solids to pass through the pump without direct contact with the impeller vanes, reducing clogging and improving reliability in dirty water conditions.

The F-31UV combines cast iron hydraulic components with a 304 stainless steel motor frame, providing a balance of abrasion resistance and corrosion protection.

Intended Applications & Use Cases

The HCP F-31UV is a true submersible trash / sewage pump, not a clear-water or sump pump. It is intended for applications where water contains suspended solids, debris, or sewage that would quickly clog standard pumps.

Typical applications include:

• Construction site dewatering
• Excavations and foundation drainage
• Wastewater and sewage handling
• Flooded areas with debris-laden water
• Industrial and municipal dewatering

Is This the Right Pump for Your Application?

Choose the HCP F-31UV if you need:

• A 3" submersible trash pump with high flow capacity
• Ability to handle solids up to 1-3/16" (30 mm)
• Single-phase electric operation (120V or 240V)
• Durable construction for dirty water or sewage
• Continuous submersible operation with motor protection

Consider a different pump if you need:

• Clear-water pumping only
• Explosion-proof equipment
• Higher horsepower or larger discharge sizes

Performance & Hydraulic Capability

The F-31UV is designed to move large volumes of water efficiently while tolerating solids:

• Maximum Flow: ~145 GPM at low head
• Maximum Head: ~38–40 ft
• Discharge Size: 3" (80 mm)
• Impeller Type: Vortex

As with all centrifugal pumps, flow decreases as discharge head increases. The performance curve reflects a smooth operating range suitable for general dewatering rather than high-pressure pumping.

Solids Handling & Vortex Impeller Design

A key feature of the F-31UV is its vortex impeller, which creates a swirling flow path that allows solids to pass through the pump without direct impeller contact.

• Maximum solid passage: 30 mm (1-3/16")
• Reduced clogging compared to non-vortex designs
• Ideal for sewage and debris-laden water

This design improves reliability and reduces maintenance in demanding environments.

Construction & Materials

• Motor Frame: SUS304 stainless steel
• Casing & Volute: FC200 cast iron
• Impeller: FC200 cast iron (vortex)
• Shaft: SUS410 stainless steel

This material combination provides excellent resistance to corrosion, abrasion, and mechanical wear.

Sealing, Cooling & Protection

• Double mechanical seals
  • Upper: Carbon / Ceramic
  • Lower: Silicon Carbide / Silicon Carbide
• Oil-filled seal chamber (VG32 oil)
• External motor cooling
• Ingress Protection: IP68
• Thermal protection on applicable models

These features help extend service life in sewage and dirty-water applications.

Electrical Options (120V vs 240V)

Hydraulic performance is identical for both versions. Voltage selection depends on available power at the job site.

Technical Specifications

Performance & Hydraulics

Electrical & Motor

Materials & Construction

Limits & Installation

Certifications & Compliance

• UL 778
• CSA C22.2 No. 108-14
• cUL & UL Listed

Why Buy from Cleanflow

Shop with confidence at Cleanflow. We supply genuine HCP pumps trusted for durability, performance, and long service life in demanding dewatering and wastewater applications.

FAQs