LMI

LMI Pumps

Leading the way in the metering pump industry, LMI introduced the first full line of electronic metering pumps and accessories. The breadth of LMI’s product line extends from low-cost metering pumps for domestic potable water treatment to highly sophisticated custom designs for specific customer applications.

Priming LMI Metering Pumps Video

  • Overview
  • Liquid Metronics Incorporated has been providing quality products and service to the water treatment industry worldwide for over 25 years.

    Today, LMI continues to shape the future of the industry by offering the next generation of our trademark yellow and black metering pumps, the LiquiPro™ Series. This series of electronic metering pumps offers simple installation and maintenance with its unique cartridge valve design, as well as quick and easy “hands free” priming three, four function and auto prime valves.

  • Why Choose LMI?
  • Utilizing superior designs and industry experience, as well as a state-of the-art facility and highly trained service representatives, LMI offers Water Treatment Professionals the quality and reliability they’ve come to expect.

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Series from LMI Pumps

  • Featured
    PD Series

    PD Series

    Introducing the LMI PD Series Chemical Metering Pumps

    Designed specifically for industrial water treatment applications, the newly redesigned PD Series chemical metering pump adds advanced technology to one of LMI’s most popular pumps. Available in two models, Manual and Enhanced, the PD Series pump fits seamlessly into your water treatment process while adding convenience and value to your application.

    Experience the next generation of precision and performance:

    • Improved Drive Mechanism for more powerful stroke, consistent steady state accuracy, and reliable efficiency
    • Simplified Capacity Setting with constant stroke range to maintain calibration across an adjustable range.
    • Advanced Electronics dynamically compensate for temperature and voltage conditions to provide consistent performance (patent pending).
    • Robust Liquid Ends with over 10 years of proven performance.

    In addition to the features and benefits of the Manual model, the Enhanced model boasts external control and a large graphical display to provide intuitive access to advanced features such as calibration assist, system and user totalizers, the new STAYPRIME™ degassing technology, and more.

    Enhanced Functionality, LMI PD7 Pumps

    • 2.4” Color LCD allows easy navigation and configuration with graphical display.
    • External Control Inputs provide convenient remote access to automate your process.
    • Calibration Assist provides an easy to use calibration process.
    • System & User Totalizers act as an odometer for your pump by logging pump strokes, estimated volume and power cycles.
    • StayPrime™ Degassing Technology automates the priming cycle after a period of idle pump time to ensure prime.
    593 products
  • Featured
    Series AD

    AD Series

    LMI ROYTRONIC EXCEL Series AD pumps achieve a new level of innovation in solenoid-driven metering pump technology. Offering a robust design, micropressor control options and improved electro-magnetics to meet all ἀow/pressure ratings. ROYTRONIC EXCEL Series AD chemical metering pumps will provide industry solutions for more versatile chemical injection with greater turn-down capability.

    6666 products
  • Featured
    Series B

    B Series

    The LMI Milton Roy Series B electromagnetic solenoid driven diaphragm pumps have manually adjustable stroke length control providing accurate pump output adjustment. The time tested electronics are totally encapsulated for protection against moisture and corrosive conditions, owing to the reliable, repeatable performances. NEMA 4X / IP65 enclosures ensure protection against corrosive environments. The priming valves have Fluorofilm® diaphragms and ramp style knobs for hands free priming. We offer a wide variety including B1 (manual stroke length and stroke frequency control), B7 (manual stroke length and selectable manual stroke frequency control or external pacing control), B9 (LCD display, manual stroke length and selectable keypad stroke frequency control or external pacing control with pulse divide / multiply option from 1-999 or 4-20mA control)

    9208 products
  • Featured
    Series C

    C Series

    The LMI Milton Roy Series C electromagnetic solenoid driven diaphragm pumps have manually adjustable stroke length control providing accurate pump output adjustment. The time tested electronics are totally encapsulated for protection against moisture and corrosive conditions, owing to the reliable, repeatable performances. NEMA 4X / IP65 enclosures ensure protection against corrosive environments. The priming valves have Fluorofilm® diaphragms and ramp style knobs for hands free priming. We offer a variety of models: C1 (manual stroke length and stroke frequency control), C7 (manual stroke length and selectable manual stroke frequency control or external pacing control), C9 (offer a LCD display, manual stroke length and selectable keypad stroke frequency control or external pacing control with pulse divide / multiply option from 1-999 or 4-20mA control)

    7014 products
  • Featured
    Series E7

    E7 Series

    The LMI Milton Roy Series E7 electromagnetic solenoid driven diaphragm pumps have manually adjustable stroke length control providing accurate pump output adjustment. The time tested electronics are totally encapsulated for protection against moisture and corrosive conditions, owing to the reliable, repeatable performances. NEMA 4X / IP65 enclosures ensure protection against corrosive environments. The priming valves have Fluorofilm® diaphragms and ramp style knobs for hands free priming. These pumps are designed to meet or exceed all standards for Class I, Division I and 2, Groups C and D; Class II, Groups E, F, and G.

    604 products
  • Featured
    XR Chemical Metering Pumps

    XR Chemical Metering Pumps

    The Excel XR chemical metering pump series from LMI are factory engineered to meet most of today’s demanding pumping application standards for accuracy, reliability & process control flexibility.

    XR LMI Pumps are designed from the ground up based on critical feedback received from many checmical metering pump customers as well as water treatment plants maintenance operators and experienced industry experts.

    LMI's Excel XR metering pumps feature enhanced unparralelled performance & process control capabilities. Built on principles from universal technology platforms with the flexibility to adapt as technology evolves and grows.

    If you have a Chemical Metering pump application, the Excel XR metering pump from LMI is ready to outsmart and outperform even the toughest demanding applications.

    EXCEL XR Metering Pump with New Features & Benefits (Video)

    XR Metering Pump with STAYPRIME Degassing Technology (Video)

    3074 products
  • Series A

    A Series

    The LMI Milton Roy ROYTRONIC Series A metering pump has a robust design, control options and improved electro-magnetics to meet all flow / pressure ratings. The pumps are available for applications up to 250 psi with capacities between .001 and 2.0 GPH. Single to dual manual control options with pulse input to 4-20 mA input are available. The line includes ferrule designed fittings that set a new standard for secure, leak-proof tubing connections. Covered by a 3-Year warranty.

    7856 products
  • Series G

    G Series

    The LMI Milton Roy Series G Mechanically Actuated diaphragm metering pumps with adjustable outputs from 0.0 to 300 GPH and injection pressure capabilities available to 175 PSI.

    2332 products
  • Series J5

    J5 Series

    LMI Milton Roy Series J5 are a electromagnetic solenoid driven diaphragm 12 Volt DC powered metering, chemical, Injection Dosing pumps for precise and accurate metering control. These include adjustable outputs from 0.006 to 2.0 GPH and injection pressure capabilities available to 140 PSI. All pumps include a total of 16 ft (4.8 m) of polyethylene tubing complete with compression connections, a foot valve with integral one piece strainer for the suction line, and an injection check/back pressure valve with 1/2" NPT male connection for the injection point.

    275 products
  • Series P

    P Series

    The LMI Milton Roy Series P electromagnetic solenoid driven diaphragm pumps have manually adjustable stroke length control providing accurate pump output adjustment. The time tested electronics are totally encapsulated for protection against moisture and corrosive conditions, owing to the reliable, repeatable performances. NEMA 4X / IP65 enclosures ensure protection against corrosive environments. The priming valves have Fluorofilm® diaphragms and ramp style knobs for hands free priming. PumpCatalog.com offers several models: P0 (manual stroke length and fixed stroke frequency), P1 (manual stroke length and stroke frequency control), P7 (manual stroke length and selectable manual stroke frequency control or external pacing control)

    9272 products
  • Parts / Accessories / Kits

    Accessories Kits Parts

    The LMI Milton Roy Pump Repair Parts and Kits contain the parts which are the most replaced. The LMI Milton Roy repair and preventative maintenance kits contain everything needed to maintain optimum performance on LMI's LiquiPro Series of electronic metering pumps.

    3221 products
  • Liquid End Assemblies

    Liquid End Assemblies

    The LMI Milton Roy liquid end Assembly are for easy maintenance of an LMI metering pump's liquid end parts. Each Liquid End Kit contains the complete liquid handling assembly for your pump - every component that comes into contact with the solution is included.

    1011 products
  • Controllers

    Controllers

    LMI Liquitech Controllers are the first choice by water-treatment professionals for simple chemical addition to control conductivity, pH and ORP. The superior design and rugged construction of our controllers add the value and reliability you expect from an industry leader.

     

    368 products
  • Drives

    Drives

    LMI Pump Drives for Electronic Chemical Metering Pumps

    1095 products
  • KBL Series

    KBL Series

    KBL Peristaltic Metering Pumps

    LMI's KBL Peristaltic Pumps are self priming to deliver the smoothest chemical feed possible. Manufactured by Ingersol Rand, each model contains a 4.33" LCD color display with standard tube leak detection. These pumps have a huge benefit where you will never have to worry about running the pump dry. These are the perfect peristaltic pump options for industrial water treatment pumping applications.

    Pump Features:
    • Tool-free tube change
    • Improved safety - No rotating parts during tube change
    • Easy-to-Use interface with one-button switching between local and remote mode
    • USBC interface allows for downloading of operating history and installation of new software versions
    • Expandable platform can be field-upgraded to add features and communication options
    • Multiple tubing options to cover a wide range of chemicals and applications
    • Assembled in USA
    • Standard 2-year warranty
    Operating Ranges:
    • Maximum flow up to 600 lph (158.5 gph "Gallons Per Hour") at full speed
    • Up to 7.6 bar (110 psi "Pounds Per Square Inch")
    • 200:1 Turndown Ratio

    Pumping Applications:

    • Industrial Water Treatment
    • Ink, Dye, and Pigment
    • Sulfuric Acid
    • Plating Solutions
    • Fungicide/Biocide
    • Anti-scalant
    • Seed Coating
    • Reagents
    96 products
  • KML Series

    KML Series

    KML Peristaltic Metering Pumps

    LMI's KML Peristaltic Pumps are geared towards municipal markets made by Ingersol Rand. KML Peristaltic pumps are self priming to deliver the smoothest chemical feed possible. Pumps will never air bind or vapor lock! Each model contains a 4.33" LCD color display with standard tube leak detection. These pumps have a huge benefit where you will never have to worry about running the pump dry. These are the perfect peristaltic pump options for industrial water treatment pumping applications.

    Pump Features:
    • Tool free tube change
    • Improved maintenance and safety - No rotating parts during tube change
    • Simple Easy-to-Use interface and one-button switching between local and remote mode
    • USBC interface allows for downloading of operating history and installation of new software versions
    • Expandable platform can be field-upgraded to add features and communication options
    • Numerous tubing options to cover a wide range of chemicals and applications
    • Assembled in the United States of America - USA
    • Standard 5-year warranty
    • NSF 61 Certified
    Operating Ranges:
    • Maximum flow up to 600 lph (158.5 gph) at full speed
    • Up to 7.6 bar (110 psi)
    • 10,000:1 Turndown Ratio

    Pumping Applications:

    • Sodium Hypochlorite
    • Polymers
    • Caustic/Sodium Hydroxide
    • Polyaluminum Chloride
    • Fluoride
    • pH and Odor Control
    • Ferric Chloride
    • Sampling Pumps
    360 products
  • Series AA

    AA Series

    The LMI Milton Roy AA Series Chemical Feed Pumps key features include rigid stroke bracket assembly, advanced control options for simplified system integration, 5 level power control option to reduce system shock and extend the life of the pump. Advanced control options include pulse multiply/divide, 4-20 mA, remote on/off. External pacing for flow proportional applications. Adjustable stroke frequency and the flexibility of up to 1,000:1 turndown ratio. NEMA 4X/IP65 enclosure provides protection against corrosive environments.

    773 products
  • XR Chemical Metering Pump Drives

    XR Chemical Metering Pump Drives

    If you are looking for replacement drives for your Excel Series Chemical Metering Pump, you have come to the right place. We have over 40 XRD Drives available for online purchasing right now.

    132 products
  • XR Chemical Metering Pump Liquid Ends

    XR Chemical Metering Pump Liquid Ends

    Browse over two dozen Excel Series Chemical Metering Pump Liquid Ends today!

    52 products
  • XR Chemical Metering Pump Parts

    XR Chemical Metering Pump Parts

    There are a wide range of options and accessories available to customize the Excel XR metering pump to fit your speficif application. Mechanically actuated diaphragm liquid end materials include, Polypropylene, PVDF & 316 Stainless steel. Accessories include backpressure valves, saftey valves, pulsation dampeners, calibration columns and degassing valves and sytems.

    If you need repair parts for your Excel XR series we have you covered. There are specific items exclusive the the XR series and some parts are universal among all LMI series.

    67 products
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