Solving the Mystery of How our Valveless Piston Pumps Work

At Fluid Metering Inc., we’ve been on the forefront of metering pump and dispenser design for over half a century. Adding to our list of achievements is our patented CeramPump® line of valveless piston pumps represents true innovation in metering pump technology. The design is valveless because it utilizes one moving part to provide both the metering and valving functions. With a design as groundbreaking as this we get a lot of questions such as, “how does it work?” and “what makes it better than other pump technologies?” To answer these questions, we released a new video featuring a 3D animation of the metering and dosing action so customers can see exactly how our pump works and learn how it can benefit their application.

How It Works

The valveless design uses just one moving part to accomplish all fluid control tasks. It consists of a piston with simultaneous, synchronous rotating and reciprocating action. A flat is machined onto the piston, as it rotates within the flow the flat acts as the valve opening and closing the inlet and outlet ports of the pump. At the same time, the reciprocating action provides the pumping function. The metering flow rate is from 0-100% and is adjusted by setting the angle of the pump head relative to the drive. The adjustment varies the piston stroke length, and in turn, the volume pumped per stroke.

The internal components are composed of sapphire-hard ceramic which delivers a high level of dimensional stability. This means high precision dosing, extreme wear resistance, and chemically inert characteristics.

Benefits of a Valveless Pump

The unique technology of the valveless pump means that customers will receive a more accurate pump, with a longer service life, that won’t need to be recalibrated. Traditional metering systems utilize valves and many more moving parts that wear overtime, even during normal operation. This means that recalibration and system failure is a way of life. Users must keep spare parts on hand and track wear and calibration activities to ensure uninterrupted service.

Our valveless design has fewer moving parts which equal less wear, and less wear means less downtime. Because ceramic parts are more wear resistant than other materials, our pumps can last for millions of dispenses providing the same precision every time. CeramPump® metering pumps are ideal for R&D laboratory, instrumentation, industrial process, and environmental applications. To find the pump that best suits your application, visit our website or contact us directly. We also post more Fluid Metering news on our Twitter and LinkedIn pages.

Conquering the Challenges of Metering Concentrated Chemicals

Why metering highly concentrated chemicals are being used more frequently?

Various industries are seeing a dramatic increase in their use of high-concentration chemicals for countless different applications. For example, Pesticide & mosquito sprayers have found that the cost of transporting and storing large amounts of dilute malathion is significantly higher than shipping small concentrated volumes and diluting them on-site. The same is true for sodium hypochlorite, a disinfectant chemical used for water treatment, and industrial cleaning chemicals like the ones used in automatic car wash equipment. In most cases, users of dilute chemicals find that they are basically paying to ship and store large drums of chemicals that consist mostly of water.

The power generation industry also utilizes low-flow process metering of concentrated chemicals for many different applications, such as metering bromine into cooling towers for algae control, injecting hydrazine into boiler feed-lines for corrosion management, and more recently, a number of fuel cell fluidic applications.

However, metering chemicals at high concentrations comes with many challenges. As the concentration increases, the chemical feed rates must significantly decrease. At these low flows, the metering precision and long-term accuracy become more difficult to achieve. High-concentration chemicals typically have intensified corrosive properties to contend with as well.

The CeramPump® from Fluid Metering, Inc. having chemically inert, sapphire-hard ceramic internals can accommodate all of these application challenges. The valveless design, having only one moving part made of sapphire-hard ceramics, will maintain drift-free accuracy of better than 1% for millions of maintenance-free cycles, without the need for recalibration. These features make the CeramPump® ideal for low and micro-volume process applications. In addition, long-term drift-free accuracy makes the CeramPump® metering pumps especially suited for low flow process metering of concentrated chemicals applications. These chemical metering pumps are available in a variety of configurations ranging from simple lab pumps to complete programmable metering and dispensing systems, as well as many compact OEM designs for medical, analytical, and process instrumentation. Click on the video below to see how our pump works.

 

For assistance with a specific application use our “Live Help” at http://fluidmetering.com for a direct connection to Fluid Metering’s application experts, or use our secure Application Request Form to provide us with details of your project. One of our specialists will contact you to target a solution.