I-3S PUMP

3-Inch Self-Priming Pump for Wastewater and Solids Handling

Maintenance Features
Tech Specs

The I-3S is built for demanding solids-handling applications where above-grade installation, reliable self-priming, and accessible maintenance are important.

Because it is self-priming, the pump can be installed above the liquid being pumped, helping provide cleaner access for inspection and service.

S Series Pump

I-3S Pump Summary

The I-3S uses a multi-vane, semi-open impeller designed for solids-handling applications.

Pump-out vanes on the impeller shroud help reduce foreign-material buildup behind the impeller and reduce pressure on the seal and bearings.

The I-3S also features a four-point external shimless adjustment at the back cover for setting impeller-to-wear-plate clearance.

I-3S: Designed for Easier Maintenance

The I-3S is designed to make routine service more accessible with clean-out-cover access, a removable rotating assembly, bearing protection, and four-point external shimless impeller-clearance adjustment.

I and I-S Series Impeller
Solids-Handling Impeller
  • Multi-vane, semi-open design
  • Designed for solids-handling applications
  • Pump-out vanes help reduce foreign-material buildup behind the impeller
  • Helps reduce pressure on the seal and bearings
All Prime S-4 cartridge seal
Cartridge Seal
  • Double-floating, self-aligning, oil-lubricated mechanical cartridge seal
  • Stationary and rotating faces are tungsten titanium carbide
  • Designed for abrasive and/or trash-handling applications
All Prime S-4 removable rotating assembly
Removable Rotating Assembly
  • Can be removed without disturbing the pump volute or piping
  • Pusher bolts provide assistance with removal
  • Spare rotating assembly can be installed to reduce downtime
S-4 bearing protection
Bearing Protection
  • Atmospheric barrier with 2 lip seals
  • Provides additional bearing protection
  • Allows external seal monitoring
Shimless Adjustment
External Shimless Adjustment
  • Back cover assembly features a 4-point external shimless adjustment
  • Used to set impeller-to-wear-plate clearance
  • Applies to I-3S, I-4S, and I-6S

I-3S Technical Specifications

Model I-3S
Series I-S Series
Connection Size 3 inches
Pump Type Self-priming, solids-handling
Impeller Multi-vane, semi-open solids-handling impeller
Impeller Adjustment Four-point external shimless impeller-to-wear-plate clearance adjustment at the back cover
Mechanical Seal Double-floating, self-aligning, oil-lubricated cartridge seal
Seal Faces Tungsten titanium carbide
Bearing Protection Atmospheric barrier with two lip seals; external seal monitoring
Service Access Primary wear parts accessible through clean-out cover opening
I-3S

S-4 Downloads

Self-priming, solids handling
Available: S-2 Classic-T spec & S-12 10-Series spec
All other models replaced by the XS Series

Contact All Prime for Orders

All Prime can help review your requirements and identify the appropriate pump and configuration.
Order Form

Applications

The I-3S is suited to demanding applications including:

  • Wastewater and Municipal Systems
  • Food and Beverage
  • Paper Mills
  • Industrial and Process Applications
  • Energy and Manufacturing
  • Mining and Aggregate
  • Steel Mills

Parts and Service

All Prime supports the I-3S with replacement wear components and rotating-assembly service parts.

Primary service items include the impeller, mechanical seal, wear plate, check valve components, and related rotating-assembly components.

Contact All Prime for help identifying the correct replacement parts for an existing I-3S.

Select the Right Pump Configuration

Pump selection should be based on the actual operating conditions of the application. Helpful information includes:


  • Required flow
  • Total dynamic head
  • Fluid being pumped
  • Solids size and concentration
  • Suction conditions
  • Available power
  • Existing pump information when replacing equipment
I-S SERIES

Explore the I-S Series

The I-3S is part of the All Prime I-S Series of self-priming, solids-handling pumps. Explore the full series to compare available pump sizes and select the model that best fits the application.

View I-S Series