Choose Peristaltic Metering Pumps for Fluids With Particulates or Chemicals That Off-Gas

A peristaltic metering pump is a type of positive displacement pump. Fluid is pumped through a flexible tube in a peristaltic motion. Rollers are attached to a rotor which is controlled by a motor. As the rotor turns, the rollers pinch the tubing to force the fluid through. When the tube is not compressed, the fluid flow is brought into the tube. 

Peristaltic metering pumps excel at pumping dirty fluids that contain particulate matter into lower pressure systems because they have no check valves to clog. The gentle forces created during the peristaltic pumping action will not damage delicate fluids within the tube.  

Peristaltic pumps are also extremely effective when pumping fluids that contain trapped gases. Fluids such as sodium hypochlorite and peracetic acid tend to release absorbed or occluded gases when subjected to a vacuum or changes in temperatures. Whereas a diaphragm pump can lose prime or vapor lock and fail when gasses build up in the pump head, peristaltic pumps are capable of pumping both fluid with particulates and those that off-gas without loss of prime or vapor lock.

Peristaltic pumps easily prime under maximum pressure, but are usually limited to maximum discharge pressures of around 125 psi. In addition, they are capable of injecting into a vacuum without the need for metal spring loaded valves. Their output volume does not change due to changes in the system pressure.  

M3 Peristaltic Chemical Dosing Pump features

The advanced performance features of Blue-White’s new M3 Peristaltic Chemical Dosing Pump include a bright, easy to access and highly responsive 5-inch display screen. The screen is as simple to operate as a cell phone, even with gloves on, and the text is easy to read. Icons are quickly recognizable.

In addition to legacy communications such as 4-20mA, the M3 offers advanced communication protocols, including Profibus, Modbus TCP and Ethernet IP. The superior design of the M3 includes firmware that can be field updated.

Additionally, M3 may be ordered with Blue-White’s exclusive FlexAPrene multichannel tube technology, which saves maintenance time and expense. These innovative pump head tubes provide optimal performance while operating at higher pressures than conventional single tube designs. The multitube design delivers tube life up to four times greater than average single tubes, according to the manufacturer.

Should a tube rupture, the FLEXFLO M3 is equipped with Blue-White’s built-in Tube Failure Detection system. This technology detects a wide range of conductive chemicals with no false triggering. If the TFD detects tube failure, the pump will automatically shut off and energize a relay switch. This permits communication with external equipment, such as a back-up pump or alarm. It also serves to prevent chemical spills and added downtime.

FLEXFLO pumps can also be equipped with Blue-White’s quick-disconnect fittings. They’re designed to aid in ensuring operator safety by helping prevent chemical spills and splashing during tube changes.

In conclusion, peristaltic metering pumps have been proven to be accurate, dependable and tough in a multitude of commercial, industrial and municipal chemical metering applications. They are a suitable choice when pumping fluids that contain particulates or trapped gas. The constant flow and gentle peristaltic pumping action help deliver precise amounts of chemical to a system without loss of prime.

Blue-White has prided itself on cutting-edge technology, quality materials and excellent customer service since 1957. The company’s approach is to simplify the chemical metering and fluid measuring process to give users peace of mind and to invent new technologies. The company has a worldwide network of factory authorized representatives, distributors, dealers and warranty centers.



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