What is the best chemical metering pump for your next project?

There are many different types of pumps that can be used for metering chemicals. There is a short list below of things to consider when selecting your chemical metering pump.

Progressive cavity, peristaltic, gear and air operated diaphragm pumps like a Wilden or Sandpiper, as well as piston, plunger and diaphragm metering pumps like LMI, Milton Roy and Madden may be used to control the flow of liquid chemicals.

When choosing the appropriate type of pump, a number of factors may need to be considered:

Cost, installation, and cost of operation

The power for air driven pumps typically cost more than electricity for electric motor driven.

• Madden offers several motor options, ranging from 3/4 horsepower to 2 horsepower. Our pumps stand the test of time and are simple to maintain. We have pumps that have been in service for over 20 years without major repairs.

Accuracy of flow control

Does the pump flow change from time to time, up or down without control? When it is set can you depend on the flow rate continuing at a steady rate until it is purposely changed?

• Madden diaphragm metering pumps are very accurate, with the flow running at +/- 1%. Our pumps have an adjustable stroke to dial your metering in to exactly where you want it.
   

Chemical resistance

Will the chemicals that you are metering deteriorate parts in the pump?

• Madden offers different options depending on the chemical you are metering. Our solution heads come in 316 Stainless Steel, PVC, and Teflon. We offer Neoprene, Hypalon, Viton, Telfon-Neoprene, and Teflon-Viton diaphragms. Our valve balls come in Alloy 20, Hastelloy C, 316SS, Teflon, and Viton. We have Ceramic, 316SS, and Telfon valve seats. We can help you select the right materials for your pump, call today 1-800-369-6233

Pressure requirements

What is the maximum pressure that will need to be overcome?

• Our diaphragm type metering pumps are available with up to 300 psi pressure capacity.

What is the temperature of the liquid or environment?

Madden pumps are limited to a maximum of 200 degrees F.
  

What is the viscosity of the liquid to be pumped?

Some pumps, like AOD diaphragm pumps and progressive cavity can handle high viscosity liquids very well
 

These are just a few of the items that need to be thought of when determining what type of pump is required for your application and we offer a pump selection guide that will help guide the specifier to make sure that the chemical metering pump that is selected will perform up to expectations.

Our diaphragm type metering pumps are available in a wide range of capacity, from the smallest (0.1 to 1.0 gallons per hour), up to our largest (18-360 gph).  We had a customer doing fabric dyeing several years ago that needed three pumps, small, medium, and large capacity, to handle the very wide range of flow rate they needed for different fabrics running through one dyeing system.

Madden technical representatives are available to help select the chemical metering pump that will perform as specified 24/7/365. Click here to contact us for more information about what type of pump will fit your application today!