XS-4 PUMP

4-Inch Self-Priming Pump for Wastewater and Slurries

The XS-4 is built for demanding liquid-handling applications where above-grade installation, reliable self-priming, and straightforward service access are important.

Its large-volume design supports automatic repriming in a completely open system without requiring suction or discharge check valves.

XS-2 - XS-10

XS-4 Pump Summary

The XS-4 uses a two-vane, semi-open impeller designed for solids-laden liquids and slurries.

Pump-out vanes on the impeller shroud help reduce foreign-material buildup behind the impeller and reduce pressure on the seal and bearings, supporting reliable operation and easier maintenance.

XS-4 Technical Specifications

Model XS-4
Series XS Series
Connection Size 4 inches
Pump Type Self-priming, solids-handling
Impeller Two-vane, semi-open solids-handling impeller
Mechanical Seal Double-floating, self-aligning, oil-lubricated cartridge seal
Seal Faces Tungsten titanium carbide
Flange Connections 150 lb. ANSI
XS-4

Designed for Easier Maintenance

The XS-4 is designed with service access in mind. Primary wear components can be reached through the removable clean-out cover, allowing maintenance to be performed without disconnecting the pump from the piping.

Accessible components include:

Impeller

Mechanical Seal

Wear Plate

Check-valve Flapper

  • Impeller
    Solids-Handling Impeller
  • Cartridge Seal
    Cartridge Seal
  • Removable Rotating Assembly
    Removable Rotating Assembly

The rotating assembly can also be removed without disturbing the pump volute or piping. A spare rotating assembly can be installed while the original assembly is serviced, helping reduce downtime.

Contact All Prime for Orders

All Prime can help review your requirements and identify the appropriate pump and configuration.
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XS-4 Downloads

Self-priming, solids handling
Hybrid spec, Classic-T casing, Super-T Type rotating assembly
Replaced by the XS-S Series
2”, 3”, 4”, 6”, 8”, 10”

Applications

The XS-4 is suited to demanding applications including:

  • Wastewater and Municipal Systems
  • Industrial and Process Applications
  • Mining and Aggregate
  • Food and Beverage
  • Energy and Manufacturing
  • Paper Mills
  • Steel Mills
  • Solids-Laden Liquids and Slurries

Parts and Service

All Prime supports the XS-4 with replacement wear components and rotating-assembly service parts. Primary service items include the impeller, mechanical seal, wear plate, and related rotating-assembly components.

Contact All Prime for help identifying the correct replacement parts for an existing XS-4.

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
XS-2 - XS-10

Explore the XS Series

The XS-4 is part of the All Prime XS 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 XS Series