Chemical Treatment Pump treats water with caustic soda.

Press Release Summary:

Utilizing valveless piston technology, CTS Chemical Treatment System delivers caustic soda and other pH adjusting chemicals for treatment of water and wastewater. Single rotating and reciprocating ceramic piston accomplishes both pumping and valving functions, eliminating need for check valves and associated maintenance. Measuring 15 ½ x 13 ½ x 7 in. and operating on less than 100 W, system has sapphire-hard internal ceramics and NEMA 4X protective enclosure for fluidics.

Original Press Release:

Accurate Delivery of Caustic Soda

News about FMI Precision Valveless Dispensers & Metering Pumps

The NEW "CTS" Chemical Treatment System from Fluid Metering, Inc. is the solution for accurately delivering caustic soda and other pH adjusting chemicals for treatment of water and wastewater.

There has been wide acceptance for the application of Caustic Soda (Sodium Hydroxide) for the treatment of industrial and potable waters, as well as wastewater in recent years. The use of caustic soda serves to raise the pH of well water which, untreated, is typically acidic and damaging to distribution system piping.

Adding caustic soda to water and wastewater is typically accomplished using metering pumps, and diaphragm pumps represent the most widely used. However, diaphragm pumps rely on four(4) internal check valves for operation and caustic soda can crystallize causing problems in any pump using check valves. Crystallization affects the sealing of the check valves causing backflow, which will directly affect pH control accuracy.

If not serviced routinely, caustic crystals can cause valves to completely seize.
Whether for scheduled check valve maintenance or complete failure, pumps with check valves need to be routinely taken out of service and rebuilt, at considerable expense and downtime. In high demand applications, this service may be required weekly.
Fluid Metering's "CTS" Chemical Treatment pump uses a unique Valveless Piston Technology. A single rotating and reciprocating ceramic piston accomplishes both the pumping and valving functions, thereby eliminating the need for check valves and the associated maintenance.

Sapphire-hard internal ceramics insure that there is no degradation in accuracy over time, and therefore, no need to recalibrate. At a fraction of the size and weight of pumps typically used for caustic soda and soda ash water treatment, FMI's space-saving design measures 15 1/2" x 13 1/2" x 7" and weighs only 14 lbs. The fluidics are contained in a NEMA 4X protective enclosure which can be wall mounted. Operating on less than 100 watts of power, the unit virtually pays for itself in energy saved, often in a few short months.

With over 50 years of valveless fluid control experience, Fluid Metering, Inc. manufactures metering systems for a variety of critical water & wastewater treatment and monitoring applications. These include soda ash addition, sodium & calcium hypochlorite injection, caustic soda, lime addition, rhodamine dye injection and more.
For additional information, Call toll free 1-800-223-3388 or 1-516-922-6050, FAX 1-516-624-8261, email: or visit our Water & Wastewater website at, which now features "Live Help", an online direct connection to FMI's application experts.

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