EWP-R Series Electronic Metering Pumps

Walchem EWP R electronic metering pump is engineered for reliable, high-precision chemical dosing across a wide range of industrial water and wastewater treatment applications. Its fully featured control unit provides programmable analog and digital pulse input control, enabling flexible integration with process control systems and automated dosing equipment.

With an 1800:1 turndown ratio and operating speeds of up to 360 strokes per minute, the Walchem EWP R metering pumps delivers accurate, repeatable chemical injection across varying flow requirements. A backlit LCD display and large multicolor LED indicator provide clear visibility of operating parameters, pump status, and system conditions for convenient monitoring.

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  • Walchem EWP-265EPE08N-UHR Pump, 4.2 GPH, 30 PSI, 230V Walchem EWP-265EPE08N-UHR Pump, 4.2 GPH, 30 PSI, 230V

    Walchem

    Walchem EWP-265EPE08N-UHR Pump, 4.2 GPH, 30 PSI, 230V

    $895.00
    Engineered for both reliability and versatility, the EWP-R offers programmable analog and digital pulse input control in a fully featured control unit. With 1800:1 turndown ratio and high-speed 360...
    $895.00

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  • Walchem EWP-038BPC07H-UHR Pump, 0.6 GPH, 290 PSI, 230V Walchem EWP-038BPC07H-UHR Pump, 0.6 GPH, 290 PSI, 230V

    Walchem

    Walchem EWP-038BPC07H-UHR Pump, 0.6 GPH, 290 PSI, 230V

    $824.00
    Engineered for both reliability and versatility, the EWP-R offers programmable analog and digital pulse input control in a fully featured control unit. With 1800:1 turndown ratio and high-speed 360...
    $824.00

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  • Walchem EWP-075CFC07N-UHR Pump, 1.2 GPH, 105 PSI, 230V Walchem EWP-075CFC07N-UHR Pump, 1.2 GPH, 105 PSI, 230V

    Walchem

    Walchem EWP-075CFC07N-UHR Pump, 1.2 GPH, 105 PSI, 230V

    $969.00
    Engineered for both reliability and versatility, the EWP-R offers programmable analog and digital pulse input control in a fully featured control unit. With 1800:1 turndown ratio and high-speed 360...
    $969.00

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  • Walchem EWP-125DPA07N-UHR Pump, 2 GPH, 60 PSI, 230V Walchem EWP-125DPA07N-UHR Pump, 2 GPH, 60 PSI, 230V

    Walchem

    Walchem EWP-125DPA07N-UHR Pump, 2 GPH, 60 PSI, 230V

    $899.00
    Engineered for both reliability and versatility, the EWP-R offers programmable analog and digital pulse input control in a fully featured control unit. With 1800:1 turndown ratio and high-speed 360...
    $899.00

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  • Walchem EWP-265EPC08N-UHR Pump, 4.2 GPH, 30 PSI, 230V Walchem EWP-265EPC08N-UHR Pump, 4.2 GPH, 30 PSI, 230V

    Walchem

    Walchem EWP-265EPC08N-UHR Pump, 4.2 GPH, 30 PSI, 230V

    $895.00
    Engineered for both reliability and versatility, the EWP-R offers programmable analog and digital pulse input control in a fully featured control unit. With 1800:1 turndown ratio and high-speed 360...
    $895.00

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  • Walchem EWP-045BPC07N-UHR Pump, 0.7 GPH, 150 PSI, 230V Walchem EWP-045BPC07N-UHR Pump, 0.7 GPH, 150 PSI, 230V

    Walchem

    Walchem EWP-045BPC07N-UHR Pump, 0.7 GPH, 150 PSI, 230V

    $745.00
    Engineered for both reliability and versatility, the EWP-R offers programmable analog and digital pulse input control in a fully featured control unit. With 1800:1 turndown ratio and high-speed 360...
    $745.00

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  • Walchem EWP-125DFC07N-UHR Pump, 2 GPH, 60 PSI, 230V Walchem EWP-125DFC07N-UHR Pump, 2 GPH, 60 PSI, 230V

    Walchem

    Walchem EWP-125DFC07N-UHR Pump, 2 GPH, 60 PSI, 230V

    $1,008.00
    Engineered for both reliability and versatility, the EWP-R offers programmable analog and digital pulse input control in a fully featured control unit. With 1800:1 turndown ratio and high-speed 360...
    $1,008.00

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  • Walchem EWP-045BVF07N-UHR Pump, 0.7 GPH, 150 PSI, 230V Walchem EWP-045BVF07N-UHR Pump, 0.7 GPH, 150 PSI, 230V

    Walchem

    Walchem EWP-045BVF07N-UHR Pump, 0.7 GPH, 150 PSI, 230V

    $745.00
    Engineered for both reliability and versatility, the EWP-R offers programmable analog and digital pulse input control in a fully featured control unit. With 1800:1 turndown ratio and high-speed 360...
    $745.00

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  • Walchem EWP-038BPA07H-UHR Pump, 0.6 GPH, 290 PSI, 230V Walchem EWP-038BPA07H-UHR Pump, 0.6 GPH, 290 PSI, 230V

    Walchem

    Walchem EWP-038BPA07H-UHR Pump, 0.6 GPH, 290 PSI, 230V

    $907.00
    Engineered for both reliability and versatility, the EWP-R offers programmable analog and digital pulse input control in a fully featured control unit. With 1800:1 turndown ratio and high-speed 360...
    $907.00

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  • Walchem EWP-035BVE07A-UHR Pump, 0.6 GPH, 150 PSI, 230V Walchem EWP-035BVE07A-UHR Pump, 0.6 GPH, 150 PSI, 230V

    Walchem

    Walchem EWP-035BVE07A-UHR Pump, 0.6 GPH, 150 PSI, 230V

    $865.00
    Engineered for both reliability and versatility, the EWP-R offers programmable analog and digital pulse input control in a fully featured control unit. With 1800:1 turndown ratio and high-speed 360...
    $865.00

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  • Walchem EWP-075CVF07N-UHR Pump, 1.2 GPH, 105 PSI, 230V Walchem EWP-075CVF07N-UHR Pump, 1.2 GPH, 105 PSI, 230V

    Walchem

    Walchem EWP-075CVF07N-UHR Pump, 1.2 GPH, 105 PSI, 230V

    $780.00
    Engineered for both reliability and versatility, the EWP-R offers programmable analog and digital pulse input control in a fully featured control unit. With 1800:1 turndown ratio and high-speed 360...
    $780.00

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  • Walchem EWP-045BPA07N-UHR Pump, 0.7 GPH, 150 PSI, 230V Walchem EWP-045BPA07N-UHR Pump, 0.7 GPH, 150 PSI, 230V

    Walchem

    Walchem EWP-045BPA07N-UHR Pump, 0.7 GPH, 150 PSI, 230V

    $828.00
    Engineered for both reliability and versatility, the EWP-R offers programmable analog and digital pulse input control in a fully featured control unit. With 1800:1 turndown ratio and high-speed 360...
    $828.00

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  • Walchem EWP-045BVE07N-UHR Pump, 0.7 GPH, 150 PSI, 230V Walchem EWP-045BVE07N-UHR Pump, 0.7 GPH, 150 PSI, 230V

    Walchem

    Walchem EWP-045BVE07N-UHR Pump, 0.7 GPH, 150 PSI, 230V

    $745.00
    Engineered for both reliability and versatility, the EWP-R offers programmable analog and digital pulse input control in a fully featured control unit. With 1800:1 turndown ratio and high-speed 360...
    $745.00

    Add to Cart The item has been added
  • Walchem EWP-045BFC07N-UHR Pump, 0.7 GPH, 150 PSI, 230V Walchem EWP-045BFC07N-UHR Pump, 0.7 GPH, 150 PSI, 230V

    Walchem

    Walchem EWP-045BFC07N-UHR Pump, 0.7 GPH, 150 PSI, 230V

    $943.00
    Engineered for both reliability and versatility, the EWP-R offers programmable analog and digital pulse input control in a fully featured control unit. With 1800:1 turndown ratio and high-speed 360...
    $943.00

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  • Walchem EWP-035BVC07A-UHR Pump, 0.6 GPH, 150 PSI, 230V Walchem EWP-035BVC07A-UHR Pump, 0.6 GPH, 150 PSI, 230V

    Walchem

    Walchem EWP-035BVC07A-UHR Pump, 0.6 GPH, 150 PSI, 230V

    $855.00
    Engineered for both reliability and versatility, the EWP-R offers programmable analog and digital pulse input control in a fully featured control unit. With 1800:1 turndown ratio and high-speed 360...
    $855.00

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  • Walchem EWP-025BVE07C-UHR Pump, 0.4 GPH, 150 PSI, 230V Walchem EWP-025BVE07C-UHR Pump, 0.4 GPH, 150 PSI, 230V

    Walchem

    Walchem EWP-025BVE07C-UHR Pump, 0.4 GPH, 150 PSI, 230V

    $875.00
    Engineered for both reliability and versatility, the EWP-R offers programmable analog and digital pulse input control in a fully featured control unit. With 1800:1 turndown ratio and high-speed 360...
    $875.00

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  • Walchem EWP-025BVC07C-UHR Pump, 0.4 GPH, 150 PSI, 230V Walchem EWP-025BVC07C-UHR Pump, 0.4 GPH, 150 PSI, 230V

    Walchem

    Walchem EWP-025BVC07C-UHR Pump, 0.4 GPH, 150 PSI, 230V

    $865.00
    Engineered for both reliability and versatility, the EWP-R offers programmable analog and digital pulse input control in a fully featured control unit. With 1800:1 turndown ratio and high-speed 360...
    $865.00

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  • Walchem EWP-150EPC11V-USR-S Pump, 2.4 GPH, 73 PSI

    Walchem

    Walchem EWP-150EPC11V-USR-S Pump, 2.4 GPH, 73 PSI

    $1,105.00
    Engineered for both reliability and versatility, the EWP-R offers programmable analog and digital pulse input control in a fully featured control unit. With 1800:1 turndown ratio and high-speed 360...
    $1,105.00

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  • Walchem EWP-150EPC11V-USR Pump, 2.4 GPH, 73 PSI

    Walchem

    Walchem EWP-150EPC11V-USR Pump, 2.4 GPH, 73 PSI

    $1,105.00
    Engineered for both reliability and versatility, the EWP-R offers programmable analog and digital pulse input control in a fully featured control unit. With 1800:1 turndown ratio and high-speed 360...
    $1,105.00

    Add to Cart The item has been added
  • Walchem EWP-150EPC08V-USR-S Pump, 2.4 GPH, 73 PSI

    Walchem

    Walchem EWP-150EPC08V-USR-S Pump, 2.4 GPH, 73 PSI

    $1,105.00
    Engineered for both reliability and versatility, the EWP-R offers programmable analog and digital pulse input control in a fully featured control unit. With 1800:1 turndown ratio and high-speed 360...
    $1,105.00

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The pump combines advanced electronic control, high turndown capability, robust priming performance, and durable construction to support dependable operation in demanding chemical dosing environments.

With flow rates up to 6.7 GPH (25 L/h) and pressure capabilities up to 300 psi (20 bar), the Walchem EWP R provides a versatile and cost-effective solution for applications requiring precise chemical metering, reliable process control, and consistent dosing performance.