In our recent article we discussed the advantages and disadvantages of working with a small pump manufacturer vs working with a large manufacturer. This information should help inform your decision on what size companies you want to get quotes from. The next step is looking for a manufacture. We have compiled a list of the best US metering pumps manufacturers. The list is organized by company size and we have included the companies’ websites for quick access.

Small/ Specialized Metering Pump Manufacturers

• AcuFlow Metering Pumps & Systems (formerly HydroFlo) – USA — acuflow.com — a US manufacturer of metering pumps and chemical dosing systems serving water & wastewater treatment, chemical processing, oil & gas, mining, fireproofing, pulp & paper, agriculture, and food & beverage industries.
  
• Jaeco Fluid Systems – Pennsylvania — jaecofs.com — manufactures plunger pumps, diaphragm pumps, and check valves that are 100% made in Pennsylvania from American materials, used in agricultural, chemical, government/defense, water treatment, refining, and automotive applications.
  
• KNF Neuberger – Trenton, NJ (U.S. arm of German parent) — knf.com
  
• Ledebuhr Industries – Williamston, MI — ledebuhr.com — founded in 1996, manufacturer of agricultural and industrial atomizers and metering pumps used in performance-specific fluid metering and spray application systems.
  
• Madden Pump (Madden Manufacturing, Inc.) – Elkhart, IN — maddenpump.com — founded in 1952, a leading manufacturer of industrial diaphragm metering pumps offering a made-to-order product line built by a small, family-style team.
  
• Sidewinder / Williams / Linc – distributed via AGI Industries (Louisiana) — agiindustries.com — smaller brands serving onshore and offshore Oil and Gas, Chemical Process and Hydrocarbon Process Industries, Power Generation, Water and Wastewater, and Pulp, Paper and Wood Products markets,

Mid-Size Metering Pump Manufacturers

• Advantage Controls – Muskogee, OK — advantagecontrols.com — established in 1994, manufacturer and supplier of industrial water treatment equipment including controllers, pumps, valves, and instrumentation.
  
• Blue-White Industries – Huntington Beach, CA — blue-white.com — founded in 1957, manufacturer of chemical metering and dosing pumps with a portfolio spanning injection pumps, rotameters, flow meters, and skid systems.
  
• LEWA-Nikkiso USA – Holliston, MA — lewa-nikkiso.com — supplies metering, diaphragm, process, and plunger pumps to oil & gas, petrochemical, plastics, pharmaceutical, food & beverage, and energy utilities industries.
  
• ProMinent – Pittsburgh, PA (U.S. subsidiary; German parent) — prominent.us — dosing pump systems for water treatment and chemical processing.
  
• Walchem – Holliston, MA (part of IWAKI’s U.S. water-treatment segment) — iwakiwalchem.com
  
• Wanner Engineering – Minneapolis, MN — wannereng.com — founded in 1972, manufacturer of high-pressure seal-less pumps with three product lines (Hydra-Cell, Vector, Stan-Cor).
  
• Zenith Pumps – Monroe, NC — zenithpumps.com — produces gear metering pumps for the process industries and is a Colfax business unit.

Large/ Enterprise Metering Pump Manufacturers

• Graco – Minneapolis, MN — graco.com — manufactures electric and pneumatic metering pumps engineered for accuracy, durability, and compatibility with a variety of fluids and operating conditions.
  
• Grundfos – Bjerringbro, Denmark (major U.S. operations) — grundfos.com — one of the largest pump manufacturers in the world, with more than 19,000 employees globally.
  
• Iwaki America – Holliston, MA (U.S. arm of Japan’s Iwaki Co.) — iwakiamerica.com — part of the world’s leading pump manufacturer maintaining a global sales and distribution network.
  
• LMI / Milton Roy – Ivyland, PA — miltonroy.com / lmipumps.com — manufactures chemical metering pumps, controllers, and accessories, with electronic and motor-driven metering pumps for water treatment, cooling water, boiler water, fertilizer injection, and paper chemical feed applications.
  
• Neptune Chemical Pump – Lansdale, PA — psgdover.com/neptune — part of PSG (Pump Solutions Group), a Dover Corporation division.
  
• Pulsafeeder – Punta Gorda, FL — pulsafeeder.com — a unit of IDEX Corporation
  
• Watson-Marlow – Wilmington, MA (U.S. arm; UK parent) — watson-marlow.com — founded in 1956, manufacturer of dispensing and peristaltic fluid pumps used in pharmaceuticals, food and beverage, water and wastewater treatment, and chemical processing.